Ss_15 Earthworks, remediation and temporary systems 1 Ss_15_10 Groundworks and earthworks systems 2 Ss_15_10_30 Excavating and filling systems 3 Ss_15_10_30_05 Backfill systems 4 Ss_15_10_30_25 Earthworks excavating systems 4 Ss_15_10_30_27 Earthworks filling systems 4 Ss_15_10_30_29 Earthworks filling systems around trees 4 Ss_15_10_30_31 Earthworks filling systems behind retaining walls 4 Ss_15_10_30_65 Puddled clay lining systems 4 Ss_15_10_30_90 Topsoil filling systems 4 Ss_15_10_33 Ground gas disposal systems 3 Ss_15_10_33_34 Ground gas collection and venting systems 4 Ss_15_10_35 Ground remediation systems 3 Ss_15_10_35_07 Bioremediation systems 4 Ss_15_10_45 Landfill systems 3 Ss_15_10_76 Site waste disposal systems 3 Ss_15_10_76_21 Dewatering systems 4 Ss_15_10_78 Slurry wall systems 3 Ss_15_10_80 Stabilization systems 3 Ss_15_10_80_33 Erosion control systems 4 Ss_15_10_80_70 Rock bolting and dowelling systems 4 Ss_15_10_80_80 Soil nailing systems 4 Ss_15_10_80_85 Subterranean void filling systems 4 Ss_15_30 Remediation, repair and renovation systems 2 Ss_15_30_10 Building services remediation systems 3 Ss_15_30_12 Ceramics repair and renovation systems 3 Ss_15_30_15 Concrete and masonry cleaning systems 3 Ss_15_30_15_15 Concrete cleaning systems 4 Ss_15_30_15_50 Masonry cleaning systems 4 Ss_15_30_15_65 Preliminary concrete cleaning systems 4 Ss_15_30_15_66 Preliminary masonry cleaning systems 4 Ss_15_30_17 Concrete repair and renovation systems 3 Ss_15_30_17_10 Bonded steel plate repair systems 4 Ss_15_30_17_12 Concrete crack repair or filling systems 4 Ss_15_30_17_14 Concrete mortar or overlay systems 4 Ss_15_30_17_16 Concrete protective coating systems 4 Ss_15_30_17_18 Concrete repair systems 4 Ss_15_30_17_85 Sprayed concrete repair systems 4 Ss_15_30_32 Fungus and beetle eradication systems 3 Ss_15_30_32_05 Beetle eradication systems 4 Ss_15_30_32_15 Combined fungus and beetle treatment systems 4 Ss_15_30_32_35 Hot air infestation treatment systems 4 Ss_15_30_32_50 Masonry fungus treatment systems 4 Ss_15_30_32_85 Termite treatment systems 4 Ss_15_30_32_90 Timber fungus treatment systems 4 Ss_15_30_33 Glass repair and renovation systems 3 Ss_15_30_50 Masonry repair and renovation systems 3 Ss_15_30_50_11 Cavity wall insulation systems 4 Ss_15_30_50_50 Masonry repair systems 4 Ss_15_30_50_53 Mortar joint repair systems 4 Ss_15_30_50_55 Mortar repointing systems 4 Ss_15_30_52 Metal repair and renovation systems 3 Ss_15_30_52_03 Aluminium repair systems 4 Ss_15_30_52_15 Copper repair systems 4 Ss_15_30_52_42 Iron repair systems 4 Ss_15_30_52_46 Lead repair systems 4 Ss_15_30_52_84 Steel repair systems 4 Ss_15_30_65 Pipeline renovation systems 3 Ss_15_30_65_15 Close fit plastics pipe lining systems 4 Ss_15_30_65_17 Continuous plastics pipe lining systems 4 Ss_15_30_65_20 Cured in place lining systems 4 Ss_15_30_65_65 Preformed lining systems 4 Ss_15_30_65_72 Rigidly anchored plastics inner layer (RAPL) lining systems 4 Ss_15_30_65_80 Spray lining systems 4 Ss_15_30_65_81 Spirally wound plastics pipe lining systems 4 Ss_15_30_90 Timber repair and renovation systems 3 Ss_15_30_90_82 Timber end lap repair systems 4 Ss_15_30_90_84 Timber joint strengthening systems 4 Ss_15_30_90_86 Timber section repair external splice systems 4 Ss_15_30_90_88 Timber section repair internal reinforcement systems 4 Ss_15_30_90_90 Timber section strengthening external reinforcement systems 4 Ss_15_30_90_92 Timber section strengthening internal reinforcement systems 4 Ss_15_95 Temporary works systems 2 Ss_15_95_15 Temporary preparatory works systems 3 Ss_15_95_15_10 Borehole systems 4 Ss_15_95_17 Temporary protection systems 3 Ss_15_95_17_90 Temporary backfill systems 4 Ss_15_95_20 Temporary whole entity structural works systems 3 Ss_15_95_20_30 Flying shores systems 4 Ss_15_95_20_32 Framed retention structure systems 4 Ss_15_95_20_70 Raking shores systems 4 Ss_15_95_20_72 Retention structure systems 4 Ss_15_95_20_75 Scaffold retention structure systems 4 Ss_15_95_20_87 Thrust pit systems 4 Ss_15_95_25 Temporary wall and barrier works systems 3 Ss_15_95_30 Temporary roof, floor and paving works systems 3 Ss_15_95_32 Temporary water and land management systems 3 Ss_15_95_32_85 Sedimentation ponds 4 Ss_15_95_35 Temporary fixed access, tunnel, shaft, vessel and tower works systems 3 Ss_15_95_40 Temporary signage and fittings, furnishings and equipment (FF&E) works systems 3 Ss_15_95_45 Temporary flora and fauna systems 3 Ss_15_95_45_42 Intercropping systems 4 Ss_15_95_45_85 Spoil heap temporary crop systems 4 Ss_15_95_45_90 Topsoil heap temporary crop systems 4 Ss_15_95_55 Temporary piped supply works systems 3 Ss_15_95_55_90 Tunnelling compressed air systems 4 Ss_15_95_60 Temporary heating, cooling and refrigeration works systems 3 Ss_15_95_65 Temporary ventilation and air conditioning works systems 3 Ss_15_95_70 Temporary electrical works systems 3 Ss_15_95_75 Temporary communications, security, safety, control and protection works systems 3 Ss_15_95_80 Temporary pavement works systems 3 Ss_15_95_80_02 Temporary access road systems 4 Ss_15_95_80_72 Temporary roadwork systems 4 Ss_15_95_85 Temporary process engineering works systems 3 Ss_15_95_90 Temporary soft facility management works services 3 Ss_20 Structural systems 1 Ss_20_05 Substructure systems 2 Ss_20_05_15 Concrete foundation systems 3 Ss_20_05_15_65 Precast concrete pad and strip foundation systems 4 Ss_20_05_15_70 Reinforced concrete pad and strip foundation systems 4 Ss_20_05_15_71 Reinforced concrete pilecap and ground beam foundation systems 4 Ss_20_05_15_72 Reinforced concrete raft foundation systems 4 Ss_20_05_15_80 Steel ground beam foundation systems 4 Ss_20_05_15_90 Unreinforced concrete foundation systems for cast in products 4 Ss_20_05_15_91 Unreinforced concrete pad and strip foundation systems 4 Ss_20_05_15_92 Unreinforced concrete trench fill foundation systems 4 Ss_20_05_50 Minor concrete substructure systems 3 Ss_20_05_50_15 Concrete haunching systems 4 Ss_20_05_50_65 Precast concrete foundation and plinth systems 4 Ss_20_05_50_70 Reinforced concrete base or foundation systems 4 Ss_20_05_50_92 Unreinforced concrete foundation with cast in products systems 4 Ss_20_05_50_93 Unreinforced concrete foundation and plinth systems 4 Ss_20_05_65 Piling systems 3 Ss_20_05_65_24 Driven precast or prestressed concrete piling systems 4 Ss_20_05_65_40 In situ concrete augered piling systems 4 Ss_20_05_65_41 In situ concrete bored piling systems 4 Ss_20_05_65_42 In situ concrete cased displacement piling systems 4 Ss_20_05_65_43 In situ concrete displacement piling systems 4 Ss_20_05_65_44 In situ concrete mini-piling or micro-piling systems 4 Ss_20_05_65_64 Plunge column piling systems 4 Ss_20_05_65_76 Screw piling systems 4 Ss_20_05_65_84 Steel bearing pile systems 4 Ss_20_05_65_89 Timber piling systems 4 Ss_20_05_80 Grouting systems 3 Ss_20_05_80_12 Cementitious grout systems 4 Ss_20_05_80_57 Non-cementitious grout systems 4 Ss_20_05_80_71 Retaining wall cementitious grout systems 4 Ss_20_05_80_73 Retaining wall self-hardening slurry systems 4 Ss_20_05_90 Underpinning systems 3 Ss_20_05_90_10 Beam and pier unreinforced concrete underpinning systems 4 Ss_20_05_90_35 Grouted underpinning systems 4 Ss_20_05_90_45 Jacked pile underpinning systems 4 Ss_20_05_90_46 Jet grouted underpinning systems 4 Ss_20_05_90_50 Mass concrete underpinning systems 4 Ss_20_05_90_60 Pile and cantilever support underpinning systems 4 Ss_20_05_90_61 Pile and needle underpinning systems 4 Ss_20_05_90_70 Raking pile underpinning systems 4 Ss_20_10 Structural frame systems 2 Ss_20_10_30 Bridge structure systems 3 Ss_20_10_30_30 Footbridge systems 4 Ss_20_10_30_65 Pipe bridge systems 4 Ss_20_10_60 Prefabricated framed and panelled structures 3 Ss_20_10_60_34 Glazed structural systems 4 Ss_20_10_60_60 Panelled and framed structural systems 4 Ss_20_10_60_84 Structural insulated panel systems 4 Ss_20_10_65 Prefabricated room systems 3 Ss_20_10_65_15 Composite pods 4 Ss_20_10_65_17 Concrete pods 4 Ss_20_10_65_65 Polypropylene pods 4 Ss_20_10_70 Shelter systems 3 Ss_20_10_70_03 Animal shelter systems 4 Ss_20_10_70_62 People shelter systems 4 Ss_20_10_70_64 Plant shelter systems 4 Ss_20_10_70_84 Storage shelter systems 4 Ss_20_10_75 Structural framing systems 3 Ss_20_10_75_15 Concrete framing systems 4 Ss_20_10_75_35 Heavy steel framing systems 4 Ss_20_10_75_45 Light steel framing systems 4 Ss_20_10_75_65 Precast reinforced concrete framing systems 4 Ss_20_10_75_70 In situ reinforced concrete framing systems 4 Ss_20_10_75_85 Timber framing systems 4 Ss_20_20 Structural beams 2 Ss_20_20_75 Structural beam systems 3 Ss_20_20_75_15 Concrete beam systems 4 Ss_20_20_75_80 Steel beam systems 4 Ss_20_20_75_85 Timber beam systems 4 Ss_20_30 Structural columns 2 Ss_20_30_75 Structural column systems 3 Ss_20_30_75_15 Concrete column systems 4 Ss_20_30_75_50 Masonry column systems 4 Ss_20_30_75_80 Steel column systems 4 Ss_20_30_75_85 Timber column systems 4 Ss_20_40 Structural sheet and cable systems 2 Ss_20_40_07 Bridge suspension cable systems 3 Ss_20_40_07_11 Cable stayed bridge cable systems 4 Ss_20_40_07_85 Suspension bridge cable systems 4 Ss_20_40_10 Building cable systems 3 Ss_20_50 Bridge abutment and pier systems 2 Ss_20_50_10 Abutment systems 3 Ss_20_50_10_10 Bank seat abutments 4 Ss_20_50_10_30 Embedded retaining wall bridge abutments 4 Ss_20_50_10_40 Integral abutments 4 Ss_20_50_10_50 Masonry bridge abutments 4 Ss_20_50_10_70 Reinforced concrete bridge abutments 4 Ss_20_50_10_80 Sheet piled bridge abutments 4 Ss_20_50_10_85 Spill-through abutments 4 Ss_20_50_10_90 Tied embedded retaining wall bridge abutments 4 Ss_20_50_10_95 Wing wall systems 4 Ss_20_50_20 Bridge pier systems 3 Ss_20_50_20_50 Masonry bridge piers 4 Ss_20_50_20_70 Reinforced concrete bridge piers 4 Ss_20_50_30 Abutment and pier component systems 3 Ss_20_50_30_11 Capping beam systems 4 Ss_20_50_30_37 Headwall systems 4 Ss_20_50_30_80 Spandrel wall systems 4 Ss_20_60 Retaining wall systems 2 Ss_20_60_30 Embedded retaining wall systems 3 Ss_20_60_30_03 Anchored steel sheet pile embedded retaining wall systems 4 Ss_20_60_30_08 Bored king post embedded retaining wall systems 4 Ss_20_60_30_13 Combi retaining wall systems 4 Ss_20_60_30_15 Contiguous bored pile embedded retaining wall systems 4 Ss_20_60_30_24 Driven king post embedded retaining wall systems 4 Ss_20_60_30_70 Reinforced concrete diaphragm retaining wall systems 4 Ss_20_60_30_80 Secant pile embedded retaining wall systems 4 Ss_20_60_30_83 Slurry diaphragm embedded retaining wall systems 4 Ss_20_60_30_85 Steel sheet pile embedded retaining wall systems 4 Ss_20_60_30_92 Unreinforced concrete diaphragm retaining wall systems 4 Ss_20_60_35 Gravity retaining wall systems 3 Ss_20_60_35_10 Caged rock unit (gabion) retaining wall systems 4 Ss_20_60_35_13 Concrete bagwork retaining wall systems 4 Ss_20_60_35_15 Crib retaining wall systems 4 Ss_20_60_35_25 Drystack masonry unit retaining wall systems 4 Ss_20_60_35_50 Masonry retaining wall systems 4 Ss_20_60_35_66 Precast concrete stem wall retaining wall systems 4 Ss_20_60_35_70 Reinforced concrete retaining wall systems 4 Ss_20_60_35_72 Reinforced earth retaining wall systems 4 Ss_20_60_35_90 Timber retaining wall systems 4 Ss_20_60_35_91 Tyre bale retaining wall systems 4 Ss_20_70 Structure covering and finishing systems 2 Ss_20_70_15 Concrete protection systems 3 Ss_20_70_65 Protective painting systems 3 Ss_20_70_80 Steel encasement systems 3 Ss_20_80 Structure accessory systems 2 Ss_20_80_60 Permanent formwork systems 3 Ss_20_95 Temporary structural systems 2 Ss_25 Wall and barrier systems 1 Ss_25_10 Framed wall systems 2 Ss_25_10_20 Curtain walling systems 3 Ss_25_10_20_85 Stick curtain walling systems 4 Ss_25_10_20_90 Unitized curtain walling systems 4 Ss_25_10_30 Framed partition systems 3 Ss_25_10_30_35 Gypsum board partition systems 4 Ss_25_10_30_70 Rigid sheet partition systems 4 Ss_25_10_32 Framed wall structure systems 3 Ss_25_10_32_03 Aluminium wall framing systems 4 Ss_25_10_32_35 Heavy steel wall framing systems 4 Ss_25_10_32_45 Light steel wall framing systems 4 Ss_25_10_32_58 Plastics wall framing systems 4 Ss_25_10_32_90 Timber wall framing systems 4 Ss_25_10_35 Framed glazed systems 3 Ss_25_10_35_35 Glazed screen systems 4 Ss_25_10_35_95 Vertical patent glazing systems 4 Ss_25_10_35_97 Window wall glazed screen systems 4 Ss_25_11 Monolithic wall structure systems 2 Ss_25_11_13 Cob wall systems 3 Ss_25_11_15 Concrete form masonry unit wall systems 3 Ss_25_11_16 Concrete wall systems 3 Ss_25_11_16_65 Precast concrete wall systems 4 Ss_25_11_16_70 Reinforced concrete wall structure systems 4 Ss_25_11_16_80 Sprayed concrete wall structure systems 4 Ss_25_11_70 Rammed earth wall systems 3 Ss_25_11_70_55 Non-stabilized rammed earth wall systems 4 Ss_25_11_70_83 Stabilized rammed earth plinth systems 4 Ss_25_11_70_85 Stabilized rammed earth wall systems 4 Ss_25_11_90 Timber wall systems 3 Ss_25_11_90_15 Cross-laminated timber wall systems 4 Ss_25_11_90_96 Wood log wall systems 4 Ss_25_12 Panel wall structure systems 2 Ss_25_12_10 Brick panel wall systems 3 Ss_25_12_15 Concrete panel wall systems 3 Ss_25_12_60 Panel enclosure systems 3 Ss_25_12_60_30 Fully-framed panel cubicle systems 4 Ss_25_12_60_60 Panel cubicle systems 4 Ss_25_12_60_65 Privacy screen systems 4 Ss_25_12_65 Panel partition systems 3 Ss_25_12_65_50 Media wall systems 4 Ss_25_12_65_55 Mesh panel partition systems 4 Ss_25_12_65_60 Plasterboard laminated partition systems 4 Ss_25_12_65_65 Plasterboard panel partition systems 4 Ss_25_12_65_70 Relocatable partition and ceiling systems 4 Ss_25_12_65_75 Relocatable partition systems 4 Ss_25_12_65_85 Storage wall systems 4 Ss_25_12_80 Structural glass wall systems 3 Ss_25_12_80_65 Point-fixed structural glass wall systems 4 Ss_25_12_80_83 Stacked structural glass wall systems 4 Ss_25_12_80_85 Suspended structural glass wall systems 4 Ss_25_12_85 Structural steel panel wall systems 3 Ss_25_12_85_60 Prefabricated metal wall systems 4 Ss_25_12_85_63 Profile metal sheet wall systems 4 Ss_25_13 Unit wall structure systems 2 Ss_25_13_05 Adobe block wall systems 3 Ss_25_13_24 Dry stone wall systems 3 Ss_25_13_30 Gabion wall systems 3 Ss_25_13_33 Glass wall systems 3 Ss_25_13_33_33 Glass block wall systems 4 Ss_25_13_33_64 Prefabricated glass block wall systems 4 Ss_25_13_35 Gypsum block wall systems 3 Ss_25_13_45 Lead brick wall systems 3 Ss_25_13_50 Masonry wall systems 3 Ss_25_13_50_49 Masonry exposed feature systems 4 Ss_25_13_50_51 Masonry wall leaf systems 4 Ss_25_13_50_54 Masonry free-standing wall leaf systems 4 Ss_25_13_50_56 Masonry internal partition systems 4 Ss_25_13_70 Reinforced masonry wall systems 3 Ss_25_13_70_71 Reinforced masonry wall leaf systems 4 Ss_25_13_70_74 Reinforced masonry free-standing wall leaf systems 4 Ss_25_13_70_76 Reinforced masonry internal partition systems 4 Ss_25_13_85 Straw bale wall systems 3 Ss_25_13_85_30 Framed straw bale wall systems 4 Ss_25_13_85_95 Unframed straw bale wall systems 4 Ss_25_14 Fence systems 2 Ss_25_14_30 Framed fence systems 3 Ss_25_14_55 Monolithic fence systems 3 Ss_25_14_63 Post, rail and board fence systems 3 Ss_25_14_63_06 Bespoke fencing systems 4 Ss_25_14_63_08 Board or palisade fencing systems 4 Ss_25_14_63_11 Carbon steel continuous bar fencing systems 4 Ss_25_14_63_51 Metal post and rail fencing systems 4 Ss_25_14_63_52 Metal vertical pale fencing systems 4 Ss_25_14_63_56 Natural hurdle fencing systems 4 Ss_25_14_63_62 Post and panel fencing systems 4 Ss_25_14_63_63 Post and rail fencing systems 4 Ss_25_14_63_64 Precast concrete palisade fencing systems 4 Ss_25_14_63_65 Precast concrete post and panel fencing systems 4 Ss_25_14_63_66 Precast concrete post and rail fencing systems 4 Ss_25_14_63_67 Prefabricated wood or plastics panel fencing systems 4 Ss_25_14_63_84 Steel hurdle fencing systems 4 Ss_25_14_63_85 Steel palisade panel fencing systems 4 Ss_25_14_63_86 Steel vertical bar fencing systems 4 Ss_25_14_63_95 Wood close boarded fencing systems 4 Ss_25_14_63_96 Wood palisade fencing systems 4 Ss_25_14_63_97 Wood post and rail fencing systems 4 Ss_25_14_63_98 Wrought iron panel fencing systems 4 Ss_25_14_67 Post, wire and mesh fence systems 3 Ss_25_14_67_12 Chain link fencing systems 4 Ss_25_14_67_14 Cleft chestnut pale fencing systems 4 Ss_25_14_67_15 Continuous mesh fencing systems 4 Ss_25_14_67_24 Dropper pattern strained wire fencing systems 4 Ss_25_14_67_27 Electric fencing systems 4 Ss_25_14_67_28 Electric security fencing systems 4 Ss_25_14_67_33 General pattern strained wire fencing systems 4 Ss_25_14_67_34 General pattern wire mesh fencing systems 4 Ss_25_14_67_51 Metal mesh panel fencing systems 4 Ss_25_14_67_70 Rope or chain fencing systems 4 Ss_25_14_67_80 Spring steel and high tensile wire mesh fencing systems 4 Ss_25_14_67_97 Wire fencing systems 4 Ss_25_15 Fixed pedestrian barrier systems 2 Ss_25_15_60 Pedestrian safety barrier and guarding systems 3 Ss_25_15_60_05 Balustrade and guarding systems 4 Ss_25_15_60_14 Composite barrier systems 4 Ss_25_15_60_15 Composite pedestrian parapet systems 4 Ss_25_15_60_16 Composite post and panel barrier systems 4 Ss_25_15_60_17 Composite post and rail barrier systems 4 Ss_25_15_60_18 Concrete post and rail barrier systems 4 Ss_25_15_60_35 Handrail systems 4 Ss_25_15_60_37 Hoop barrier systems 4 Ss_25_15_60_52 Metal modular barrier systems 4 Ss_25_15_60_53 Metal pedestrian parapet systems 4 Ss_25_15_60_54 Metal post and mesh panel barrier systems 4 Ss_25_15_60_55 Metal post and panel barrier systems 4 Ss_25_15_60_56 Metal post and rail barrier systems 4 Ss_25_15_60_57 Metal vertical bar pedestrian guard rail systems 4 Ss_25_15_60_60 Pedestrian parapet systems 4 Ss_25_15_60_65 Post and panel barrier systems 4 Ss_25_15_60_66 Post and rail barrier systems 4 Ss_25_15_60_67 Post and rope barrier systems 4 Ss_25_15_60_68 Post and wire barrier systems 4 Ss_25_15_60_96 Wood post and panel barrier systems 4 Ss_25_15_60_97 Wood post and rail barrier systems 4 Ss_25_15_85 Sports barrier systems 3 Ss_25_15_85_55 Multi-use games fencing systems 4 Ss_25_16 Fixed traffic and protective barrier systems 2 Ss_25_16_04 Artificial reef systems 3 Ss_25_16_05 Avalanche and snow barrier systems 3 Ss_25_16_08 Blast barrier systems 3 Ss_25_16_08_44 Jet blast deflection systems 4 Ss_25_16_21 Debris flow barrier systems 3 Ss_25_16_30 Fish barrier systems 3 Ss_25_16_46 Landslide barrier systems 3 Ss_25_16_50 Coastal, river and waterways protection systems 3 Ss_25_16_50_72 Rock armour systems 4 Ss_25_16_50_77 Scouring protection systems 4 Ss_25_16_50_80 Sea wall systems 4 Ss_25_16_73 Road and rail barrier systems 3 Ss_25_16_73_03 Acoustic barrier systems 4 Ss_25_16_73_05 Anti-throw barrier systems 4 Ss_25_16_73_26 Environment protection screen systems 4 Ss_25_16_73_80 Socket for temporary barrier systems 4 Ss_25_16_76 Rockfall barrier systems 3 Ss_25_16_94 Vehicle restraint systems 3 Ss_25_16_94_10 Bollard systems 4 Ss_25_16_94_14 Combined metal and concrete vehicle safety parapet systems 4 Ss_25_16_94_16 Concrete safety barrier (CSB) systems 4 Ss_25_16_94_44 Low-speed precast concrete safety parapet (PCONC) systems 4 Ss_25_16_94_46 Low-speed masonry safety parapet (PMAS) systems 4 Ss_25_16_94_48 Low-speed metal vehicle safety parapet systems 4 Ss_25_16_94_50 Metal vehicle safety fence systems 4 Ss_25_16_94_65 Protective rail systems 4 Ss_25_16_94_95 Vehicle safety control systems 4 Ss_25_16_94_97 Wire rope safety fence (WRSF) systems 4 Ss_25_17 Dam and levee structure systems 2 Ss_25_17_05 Arch dam systems 3 Ss_25_17_10 Buttress dam systems 3 Ss_25_17_25 Embankment dam and levee systems 3 Ss_25_17_35 Gravity dam systems 3 Ss_25_20 Wall cladding systems 2 Ss_25_20_08 Board cladding systems 3 Ss_25_20_08_95 Weatherboarding systems 4 Ss_25_20_14 Composite panel cladding systems 3 Ss_25_20_14_10 Built up metal insulating sandwich panel cladding systems 4 Ss_25_20_14_52 Metal composite panel cladding systems 4 Ss_25_20_14_54 Metal insulating sandwich panel cladding systems 4 Ss_25_20_14_55 Metal semi-composite panel cladding systems 4 Ss_25_20_15 Concrete cladding systems 3 Ss_25_20_15_16 Concrete panel cladding systems 4 Ss_25_20_33 Glass fibre reinforced concrete (GRC) cladding systems 3 Ss_25_20_33_35 GRC cladding systems 4 Ss_25_20_34 Glass fibre reinforced gypsum (GRG) cladding systems 3 Ss_25_20_34_35 GRG cladding systems 4 Ss_25_20_35 Glass fibre reinforced plastics (GRP) cladding systems 3 Ss_25_20_35_35 GRP cladding systems 4 Ss_25_20_50 Metal sheet fully supported wall covering systems 3 Ss_25_20_50_05 Aluminium sheet cladding systems 4 Ss_25_20_50_11 Carbon steel sheet cladding systems 4 Ss_25_20_50_15 Copper sheet cladding systems 4 Ss_25_20_50_45 Lead sheet cladding systems 4 Ss_25_20_50_50 Lead-wrapped panel cladding systems 4 Ss_25_20_50_85 Stainless steel sheet cladding systems 4 Ss_25_20_50_95 Zinc sheet cladding systems 4 Ss_25_20_60 Panel and sheet cladding systems 3 Ss_25_20_68 Profiled sheet cladding systems 3 Ss_25_20_68_30 Fibre cement profiled sheet cladding systems 4 Ss_25_20_68_50 Metal profiled sheet cladding systems 4 Ss_25_20_68_65 Plastics profiled sheet cladding systems 4 Ss_25_20_70 Rainscreen cladding systems 3 Ss_25_20_70_25 Drained and back-ventilated rainscreen cladding systems 4 Ss_25_20_70_65 Pressure equalized rainscreen cladding systems 4 Ss_25_20_72 Sheet cladding systems 3 Ss_25_20_72_72 Rigid sheet cladding systems 4 Ss_25_20_85 Stone cladding systems 3 Ss_25_20_85_50 Manufactured stone cladding systems 4 Ss_25_20_85_55 Natural stone cladding systems 4 Ss_25_20_90 Unit cladding systems 3 Ss_25_20_90_13 Clay plain tile cladding systems 4 Ss_25_20_90_15 Concrete plain tile cladding systems 4 Ss_25_20_90_30 Fibre cement slate cladding systems 4 Ss_25_20_90_50 Metal tile cladding systems 4 Ss_25_20_90_55 Natural slate cladding systems 4 Ss_25_20_90_65 Precast concrete cladding systems 4 Ss_25_20_90_95 Wood shingle or shake cladding systems 4 Ss_25_25 Wall lining systems 2 Ss_25_25_05 Acoustic panel systems 3 Ss_25_25_45 Lining and casing systems 3 Ss_25_25_45_25 Duct and wall panel lining systems 4 Ss_25_25_45_33 Gypsum board casing systems 4 Ss_25_25_45_35 Gypsum board wall lining systems 4 Ss_25_25_45_50 Metal framed wall lining systems 4 Ss_25_25_45_68 Rigid sheet casing systems 4 Ss_25_25_45_70 Rigid sheet wall lining systems 4 Ss_25_25_45_88 Timber board casing systems 4 Ss_25_25_45_90 Timber board wall lining systems 4 Ss_25_25_70 Radiation shielding lining systems 3 Ss_25_25_75 Rigid sheet fine lining and panelling systems 3 Ss_25_25_75_05 Acoustic panel lining systems 4 Ss_25_25_75_30 Framed wood panel lining systems 4 Ss_25_25_75_63 Plastics panel lining systems 4 Ss_25_25_75_65 Plastics veneered panel lining systems 4 Ss_25_25_75_85 Specialist faced panel lining systems 4 Ss_25_25_75_95 Wood veneered panel lining systems 4 Ss_25_25_85 Stone lining systems 3 Ss_25_25_85_50 Manufactured stone lining systems 4 Ss_25_25_85_55 Natural stone lining systems 4 Ss_25_25_95 Wall sheathing systems 3 Ss_25_25_95_28 External wall sheathing systems 4 Ss_25_30 Door and window systems 2 Ss_25_30_15 Concrete wall glazing systems 3 Ss_25_30_15_66 Precast concrete security window systems 4 Ss_25_30_20 Door, shutter and hatch systems 3 Ss_25_30_20_16 Collapsible gate and grille doorset systems 4 Ss_25_30_20_22 Door assembly systems 4 Ss_25_30_20_25 Doorset systems 4 Ss_25_30_20_30 Frame and door leaf systems 4 Ss_25_30_20_32 Frameless glass door systems 4 Ss_25_30_20_35 Hatch systems 4 Ss_25_30_20_37 High security doorset systems 4 Ss_25_30_20_38 High speed doorset systems 4 Ss_25_30_20_39 Hinged doorset systems 4 Ss_25_30_20_40 Industrial doorset systems 4 Ss_25_30_20_45 Loading bay doorset systems 4 Ss_25_30_20_46 Louvre doorset systems 4 Ss_25_30_20_62 Pivot doorset systems 4 Ss_25_30_20_65 Platform door systems 4 Ss_25_30_20_70 Revolving doorset systems 4 Ss_25_30_20_73 Roller grille doorset systems 4 Ss_25_30_20_74 Roller shutter doorset systems 4 Ss_25_30_20_76 Sectional overhead doorset systems 4 Ss_25_30_20_77 Sliding doorset systems 4 Ss_25_30_20_78 Sliding folding doorset systems 4 Ss_25_30_20_80 Sliding stacking panel partition systems 4 Ss_25_30_20_84 Strip curtain doorset systems 4 Ss_25_30_20_93 Up and over doorset systems 4 Ss_25_30_29 Fire and smoke curtain systems 3 Ss_25_30_29_30 Fire curtain systems 4 Ss_25_30_29_80 Smoke curtain systems 4 Ss_25_30_95 Window systems 3 Ss_25_30_95_26 External window systems 4 Ss_25_30_95_41 Internal window systems 4 Ss_25_30_95_96 Window walling systems 4 Ss_25_32 Gate and access control systems 2 Ss_25_32_35 Gate systems 3 Ss_25_32_35_05 Animal gate systems 4 Ss_25_32_35_15 Chicane systems 4 Ss_25_32_35_30 Folding gate systems 4 Ss_25_32_35_37 Hinged gate systems 4 Ss_25_32_35_41 In-line inhibitor systems 4 Ss_25_32_35_45 Kissing gate systems 4 Ss_25_32_35_80 Sliding gate systems 4 Ss_25_32_35_85 Stile systems 4 Ss_25_32_35_90 Turnstile systems 4 Ss_25_32_60 Passport control gate systems 3 Ss_25_32_60_26 e-passport gate systems 4 Ss_25_32_60_60 Passport gate systems 4 Ss_25_32_70 Railway platform automated barrier systems 3 Ss_25_36 Operable barrier systems 2 Ss_25_36_24 Dry dock automated gate systems 3 Ss_25_36_30 Flood and storm surge barrier systems 3 Ss_25_36_30_30 Flood gate systems 4 Ss_25_36_50 Marina and sea gate automated systems 3 Ss_25_36_58 Operable rail barrier systems 3 Ss_25_36_62 Operable water barrier systems 3 Ss_25_36_64 Operable bridge barrier systems 3 Ss_25_36_66 Operable tunnel barrier systems 3 Ss_25_36_70 Railway crossing systems 3 Ss_25_36_95 Vehicle access point control systems 3 Ss_25_36_95_05 Automated heavy-duty gate systems 4 Ss_25_36_95_35 Heavy duty sliding beam barrier systems 4 Ss_25_36_95_36 Height restrictor systems 4 Ss_25_36_95_38 Horizontal swing gate systems 4 Ss_25_36_95_40 Hydraulic ramp systems 4 Ss_25_36_95_50 Movable bollard and car park post systems 4 Ss_25_36_95_70 Rising arm barrier systems 4 Ss_25_36_95_72 Rising bollard systems 4 Ss_25_36_95_85 Static bollard systems 4 Ss_25_36_95_94 Vehicle flow plate systems 4 Ss_25_36_95_96 Vehicle stop systems 4 Ss_25_38 Wall and barrier opening hardware systems 2 Ss_25_38_20 Door, window and gate hardware systems 3 Ss_25_38_20_20 Door hardware systems 4 Ss_25_38_20_30 Garage door hardware systems 4 Ss_25_38_20_33 Gate hardware systems 4 Ss_25_38_20_35 Hatch hardware systems 4 Ss_25_38_20_70 Relocatable partition hardware systems 4 Ss_25_38_20_80 Shutter hardware systems 4 Ss_25_38_20_95 Window hardware systems 4 Ss_25_45 Wall covering and finish systems 2 Ss_25_45_02 Acoustic covering systems 3 Ss_25_45_02_60 Parge coat systems 4 Ss_25_45_25 Drapery systems 3 Ss_25_45_70 Render and roughcast coating systems 3 Ss_25_45_70_55 Multicoat render systems 4 Ss_25_45_70_60 One coat render systems 4 Ss_25_45_70_90 Tiling and mosaic render substrate systems 4 Ss_25_45_72 Rendered insulation systems 3 Ss_25_45_72_02 Adhesive fixed external wall insulation systems 4 Ss_25_45_72_42 Insulated plinth systems 4 Ss_25_45_72_70 Rail fixed external wall insulation systems 4 Ss_25_45_74 Rolled paper and fabric covering systems 3 Ss_25_45_74_70 Rolled covering systems 4 Ss_25_45_85 Sprayed coating systems 3 Ss_25_45_85_82 Sprayed external monolithic coating systems 4 Ss_25_45_85_85 Sprayed internal monolithic coating systems 4 Ss_25_45_86 Suspended render systems 3 Ss_25_45_88 Tiling systems 3 Ss_25_45_88_25 External wall tiling systems 4 Ss_25_45_88_40 Internal wall tiling systems 4 Ss_25_45_88_88 Terrazzo wall tiling systems 4 Ss_25_45_88_90 Tiling and mosaic mortar substrate systems 4 Ss_25_45_90 Unit facing systems 3 Ss_25_50 Wall mounted canopy and screen systems 2 Ss_25_50_05 Awning systems 3 Ss_25_50_35 Grille systems 3 Ss_25_50_45 Louvre and shading systems 3 Ss_25_50_45_10 Canopy systems 4 Ss_25_50_45_30 Facade-aligned brise soleil systems 4 Ss_25_50_45_45 Louvre screen systems 4 Ss_25_50_45_60 Panellized louvre screen systems 4 Ss_25_50_45_65 Projecting brise soleil systems 4 Ss_25_50_75 Screen systems 3 Ss_25_50_80 Shutter systems 3 Ss_25_60 Wall and barrier accessory systems 2 Ss_25_60_10 Cavity wall tie renewal and insertion systems 3 Ss_25_60_30 Fire stopping systems 3 Ss_25_60_30_40 Individual services penetrations fire stopping systems 4 Ss_25_60_30_45 Linear gap fire stopping systems 4 Ss_25_60_30_48 Loose fire stopping systems 4 Ss_25_60_30_55 Multiple services penetrations fire stopping systems 4 Ss_25_60_30_62 Pipe collar fire stopping systems 4 Ss_25_60_35 Glazing systems 3 Ss_25_60_35_06 Bead-fixed insulating glazing systems 4 Ss_25_60_35_08 Bead-fixed single glazing systems 4 Ss_25_60_35_30 Fire-resistant glazing systems 4 Ss_25_60_35_33 Glazing film systems 4 Ss_25_60_35_35 Groove-fixed single glazing systems 4 Ss_25_60_35_40 Internal use bead and tape, groove or channel glazing systems 4 Ss_25_60_35_50 Mirror glazing systems 4 Ss_25_60_35_65 Putty-fronted single glazing systems 4 Ss_25_60_35_75 Single-sided gasket glazing systems 4 Ss_25_60_35_85 Structural zipper gasket glazing systems 4 Ss_25_60_35_95 U-profiled glazing systems 4 Ss_25_60_50 Metal sheet wall flashing and weathering systems 3 Ss_25_60_50_03 Aluminium sheet wall flashing systems 4 Ss_25_60_50_04 Aluminium sheet wall weathering systems 4 Ss_25_60_50_11 Carbon steel wall flashing systems 4 Ss_25_60_50_12 Carbon steel wall weathering systems 4 Ss_25_60_50_14 Copper sheet wall flashing systems 4 Ss_25_60_50_15 Copper sheet wall weathering systems 4 Ss_25_60_50_47 Lead damp proof course systems 4 Ss_25_60_50_48 Lead sheet wall flashing systems 4 Ss_25_60_50_49 Lead sheet wall weathering systems 4 Ss_25_60_50_84 Stainless steel sheet wall flashing systems 4 Ss_25_60_50_85 Stainless steel sheet wall weathering systems 4 Ss_25_60_50_94 Zinc sheet wall flashing systems 4 Ss_25_60_50_95 Zinc sheet wall weathering systems 4 Ss_25_95 Temporary wall and barrier systems 2 Ss_25_95_30 Temporary flood barrier systems 3 Ss_25_95_60 Temporary pedestrian barrier systems 3 Ss_25_95_70 Temporary rail barrier systems 3 Ss_25_95_75 Temporary road barrier systems 3 Ss_25_95_85 Temporary traffic barrier systems 3 Ss_25_95_90 Temporary water barrier systems 3 Ss_30 Roof, floor and paving systems 1 Ss_30_10 Pitched, arched and domed roof structure systems 2 Ss_30_10_30 Framed roof structure systems 3 Ss_30_10_30_03 Aluminium roof framing systems 4 Ss_30_10_30_20 Glazed unit roof framing systems 4 Ss_30_10_30_25 Heavy steel roof framing systems 4 Ss_30_10_30_30 Heavy steel roof space frame systems 4 Ss_30_10_30_35 Heavy steel roof space truss systems 4 Ss_30_10_30_45 Light steel roof framing systems 4 Ss_30_10_30_58 Plastics roof framing systems 4 Ss_30_10_30_60 Precast concrete roof structure systems 4 Ss_30_10_30_70 Reinforced concrete roof framing systems 4 Ss_30_10_30_85 Timber roof framing systems 4 Ss_30_10_50 Monolithic roof structure systems 3 Ss_30_10_50_70 Sprayed concrete roof systems 4 Ss_30_10_60 Panel roof structure systems 3 Ss_30_10_90 Unit roof structure systems 3 Ss_30_10_90_50 Masonry roof systems 4 Ss_30_12 Flat roof, floor and deck structure systems 2 Ss_30_12_05 Beam and block floor systems 3 Ss_30_12_15 Concrete plank floor systems 3 Ss_30_12_20 Deck systems 3 Ss_30_12_30 Flat roof and floor cassette structural insulated panel (SIP) systems 3 Ss_30_12_32 Framed decking systems 3 Ss_30_12_33 Framed floor systems 3 Ss_30_12_34 Framed mezzanine systems 3 Ss_30_12_35 Glass unit masonry floor systems 3 Ss_30_12_45 Lift-up concrete plank floor systems 3 Ss_30_12_50 Masonry (flat arch) floor systems 3 Ss_30_12_60 Pier and jetty structure systems 3 Ss_30_12_64 Platform systems 3 Ss_30_12_64_17 Crosswall platform systems 4 Ss_30_12_64_30 Front wall platform systems 4 Ss_30_12_64_53 Modular platform systems 4 Ss_30_12_85 Structural deck systems 3 Ss_30_12_85_15 Composite concrete floor, roof or balcony deck systems 4 Ss_30_12_85_16 Composite steel and concrete floor, roof or balcony deck systems 4 Ss_30_12_85_17 Concrete beam and block floor or roof deck systems 4 Ss_30_12_85_18 Concrete floor or roof deck systems 4 Ss_30_12_85_30 Glazed unit floor or roof deck systems 4 Ss_30_12_85_40 Heavy steel floor, roof or balcony deck systems 4 Ss_30_12_85_50 Light steel floor, roof or balcony deck systems 4 Ss_30_12_85_65 Post tensioned concrete floor or roof deck systems 4 Ss_30_12_85_70 Reinforced concrete floor, roof or balcony deck systems 4 Ss_30_12_85_90 Timber floor, roof or balcony deck systems 4 Ss_30_14 Paving systems 2 Ss_30_14_02 Acrylic and resin bound aggregate paving systems 3 Ss_30_14_02_30 Fibre-reinforced resin-bound aggregate overlay systems 4 Ss_30_14_02_41 Impact absorbing synthetic play and sport paving systems 4 Ss_30_14_02_42 Impervious acrylic coated sports paving systems 4 Ss_30_14_02_70 Resin-bonded aggregate paving systems 4 Ss_30_14_02_71 Resin-bound aggregate light duty paving systems 4 Ss_30_14_02_72 Resin-bound aggregate heavy duty paving systems 4 Ss_30_14_02_73 Resin-bound aggregate overlay systems 4 Ss_30_14_02_74 Resin-bound stone aggregate sports paving systems 4 Ss_30_14_02_85 Synthetic play surfacing systems 4 Ss_30_14_05 Asphalt road and paving systems 3 Ss_30_14_05_05 Asphalt concrete light duty paving systems 4 Ss_30_14_05_06 Asphalt concrete paving systems 4 Ss_30_14_05_07 Asphalt concrete runway paving systems 4 Ss_30_14_05_08 Asphalt concrete surface overlay systems 4 Ss_30_14_05_35 Hot rolled asphalt paving systems 4 Ss_30_14_05_36 Hot rolled asphalt runway paving systems 4 Ss_30_14_05_40 Hot rolled asphalt sports paving systems 4 Ss_30_14_05_50 Mastic asphalt pedestrian paving systems 4 Ss_30_14_05_65 Porous asphalt concrete paving systems 4 Ss_30_14_05_70 Porous asphalt concrete sports paving systems 4 Ss_30_14_05_75 Stone mastic asphalt paving systems 4 Ss_30_14_15 Concrete road and paving systems 3 Ss_30_14_15_14 Concrete grass-filled paving systems 4 Ss_30_14_15_16 Concrete paving systems 4 Ss_30_14_15_17 Concrete porous paving systems 4 Ss_30_14_15_18 Concrete runway paving systems 4 Ss_30_14_50 Mat and sheet paving systems 3 Ss_30_14_50_25 Dry ski slope synthetic matting systems 4 Ss_30_14_50_65 Polymeric sports paving systems 4 Ss_30_14_50_80 Synthetic grass surfacing systems 4 Ss_30_14_80 Unbound aggregate paving systems 3 Ss_30_14_80_30 Fast dry clay sports paving systems 4 Ss_30_14_80_37 Hoggin paving systems 4 Ss_30_14_80_40 Hard binding gravel paving systems 4 Ss_30_14_80_45 Loose laid aggregate paving systems 4 Ss_30_14_80_47 Loose aggregate overlay systems 4 Ss_30_14_80_48 Loose gravel paving systems 4 Ss_30_14_80_75 Sand play surfacing systems 4 Ss_30_14_80_80 Slurry surfacing overlay systems 4 Ss_30_14_80_90 Unbound aggregate cycle paving systems 4 Ss_30_14_80_95 Woodchip and stone trim trail paving systems 4 Ss_30_14_80_98 Woodchip and woodfibre surface paving systems 4 Ss_30_14_90 Unit paving systems 3 Ss_30_14_90_11 Cellular plastics grass-filled paving systems 4 Ss_30_14_90_12 Cellular plastics gravel-filled paving systems 4 Ss_30_14_90_30 Flag and slab bound paving systems 4 Ss_30_14_90_32 Flag and slab paving overlay systems 4 Ss_30_14_90_34 Flag and slab pedestal-supported paving systems 4 Ss_30_14_90_36 Flag and slab unbound paving systems 4 Ss_30_14_90_50 Mosaic paving systems 4 Ss_30_14_90_60 Permeable flag and slab paving systems 4 Ss_30_14_90_62 Permeable small unit paving systems 4 Ss_30_14_90_70 Rail track paving systems 4 Ss_30_14_90_75 Small unit bound paving systems 4 Ss_30_14_90_80 Small unit paving overlay systems 4 Ss_30_14_90_85 Small unit unbound paving systems 4 Ss_30_16 Static bridge deck structure systems 2 Ss_30_16_10 Bridge deck systems 3 Ss_30_16_10_08 Box girder bridge deck systems 4 Ss_30_16_10_12 Composite steel and concrete bridge deck systems 4 Ss_30_16_10_13 Conarch bridge systems 4 Ss_30_16_10_15 Concrete half through deck systems 4 Ss_30_16_10_16 Concrete slab deck systems 4 Ss_30_16_10_30 Filler beam deck systems 4 Ss_30_16_10_31 Flat and stepped deck systems 4 Ss_30_16_10_53 Modular precast concrete deck systems 4 Ss_30_16_10_59 Orthotropic deck systems 4 Ss_30_16_10_65 Pre-stressed concrete beam deck systems 4 Ss_30_16_10_80 Solid steel slab systems 4 Ss_30_16_30 Bridge expansion joint systems 3 Ss_30_16_30_04 Asphaltic plug joint systems 4 Ss_30_16_30_09 Buried expansion joint systems 4 Ss_30_16_30_56 Nosing expansion joint systems with poured sealants 4 Ss_30_16_30_57 Nosing expansion joint systems with preformed compression seals 4 Ss_30_20 Flooring and decking systems 2 Ss_30_20_10 Board and rigid sheet floor systems 3 Ss_30_20_10_10 Battened timber board floating floor systems 4 Ss_30_20_10_15 Battened wood-based rigid sheet floating floor systems 4 Ss_30_20_10_45 Joist-supported timber board floor systems 4 Ss_30_20_10_50 Joist-supported wood-based rigid sheet floor systems 4 Ss_30_20_10_95 Wood-based rigid sheet floating floor systems 4 Ss_30_20_15 Construction site 3 Ss_30_20_22 Demountable athletics floor systems 3 Ss_30_20_30 External deck and boardwalk systems 3 Ss_30_20_30_10 Boardwalk systems 4 Ss_30_20_30_25 Decking systems 4 Ss_30_20_70 Raised floor systems 3 Ss_30_20_70_70 Raised access floor systems 4 Ss_30_20_90 Wood and composite unit flooring systems 3 Ss_30_20_90_15 Composition block flooring systems 4 Ss_30_20_90_50 Mosaic parquet panel flooring systems 4 Ss_30_20_90_95 Wood block flooring systems 4 Ss_30_20_95 Wood strip and board fine flooring systems 3 Ss_30_20_95_10 Battened wood floating floor systems 4 Ss_30_20_95_15 Composite laminate floating floor systems 4 Ss_30_20_95_20 Direct-fixed wood floor systems 4 Ss_30_20_95_25 Direct-glued wood floor systems 4 Ss_30_20_95_95 Wood floating floor systems 4 Ss_30_25 Ceiling and soffit systems 2 Ss_30_25_10 Board and sheet ceiling systems 3 Ss_30_25_10_10 Board suspended ceiling systems 4 Ss_30_25_10_26 External ceiling systems 4 Ss_30_25_10_28 External soffit systems 4 Ss_30_25_10_80 Soffit lining and beam casing systems 4 Ss_30_25_22 Demountable suspended ceiling systems 3 Ss_30_25_22_01 Acoustic baffle suspended ceiling systems 4 Ss_30_25_22_30 Fabric membrane ceiling systems 4 Ss_30_25_22_52 Monolithic suspended ceiling systems 4 Ss_30_25_22_70 Raft or island suspended ceiling systems 4 Ss_30_25_22_90 Unit/ modular suspended ceiling systems 4 Ss_30_30 Roof opening systems 2 Ss_30_30_15 Concrete roof glazing systems 3 Ss_30_30_15_42 In situ concrete roof glazing systems 4 Ss_30_30_15_64 Precast concrete lift-out access roof glazing systems 4 Ss_30_30_15_65 Precast concrete roof glazing systems 4 Ss_30_30_34 Glass unit masonry roof light systems 3 Ss_30_30_71 Roof hatch systems 3 Ss_30_30_72 Rooflight and roof window systems 3 Ss_30_30_72_21 Daylight pipe systems 4 Ss_30_30_72_72 Rooflight systems 4 Ss_30_30_72_73 Roof window systems 4 Ss_30_30_73 Roof ventilator systems 3 Ss_30_30_73_60 Passive roof natural ventilator systems 4 Ss_30_30_73_72 Roof smoke ventilator systems 4 Ss_30_32 Floor opening systems 2 Ss_30_32_15 Floor glazing systems 3 Ss_30_32_15_15 Concrete floor glazing systems 4 Ss_30_32_15_64 Precast concrete lift-out access floor glazing systems 4 Ss_30_32_15_65 Precast concrete floor glazing systems 4 Ss_30_32_30 Floor hatch systems 3 Ss_30_34 Pavement opening systems 2 Ss_30_34_03 Animal grid systems 3 Ss_30_34_03_11 Cattle grid systems 4 Ss_30_34_15 Pavement glazing systems 3 Ss_30_34_15_15 Concrete pavement glazing systems 4 Ss_30_34_15_64 Precast concrete lift-out access pavement glazing systems 4 Ss_30_34_15_65 Precast concrete pavement glazing systems 4 Ss_30_34_16 Pavement smoke venting systems 3 Ss_30_34_16_15 Concrete pavement glazing smoke venting systems 4 Ss_30_34_16_16 Concrete pavement non-glazed smoke venting systems 4 Ss_30_34_16_64 Precast concrete pavement glazing smoke venting systems 4 Ss_30_34_16_65 Precast concrete pavement non-glazed smoke venting systems 4 Ss_30_36 Ceiling and soffit opening systems 2 Ss_30_36_10 Ceiling hatch systems 3 Ss_30_36_75 Soffit vent systems 3 Ss_30_40 Roof and balcony covering and finish systems 2 Ss_30_40_10 Board roof covering systems 3 Ss_30_40_10_30 Flat board roof deck systems 4 Ss_30_40_10_60 Pitched board roof sarking systems 4 Ss_30_40_30 Flat roof covering systems 3 Ss_30_40_30_40 Liquid-applied cold roof covering systems 4 Ss_30_40_30_42 Liquid-applied inverted roof covering systems 4 Ss_30_40_30_43 Liquid-applied warm roof covering systems 4 Ss_30_40_30_50 Mastic asphalt cold roof covering systems 4 Ss_30_40_30_52 Mastic asphalt inverted roof covering systems 4 Ss_30_40_30_55 Mastic asphalt warm roof covering systems 4 Ss_30_40_30_70 Reinforced bitumen membrane cold roof covering systems 4 Ss_30_40_30_71 Reinforced bitumen membrane inverted roof covering systems 4 Ss_30_40_30_72 Reinforced bitumen membrane warm roof covering systems 4 Ss_30_40_30_78 Single layer sheet cold roof covering systems 4 Ss_30_40_30_79 Single layer sheet inverted roof covering systems 4 Ss_30_40_30_80 Single layer sheet warm roof covering systems 4 Ss_30_40_34 Glass roofing systems 3 Ss_30_40_34_15 Cantilevered structural glass beam canopy systems 4 Ss_30_40_34_60 Point-fixed structural glass canopy systems 4 Ss_30_40_34_65 Point-fixed structural glass roof systems 4 Ss_30_40_34_70 Point-fixed structural glass soffit systems 4 Ss_30_40_34_75 Sloping patent glazing systems 4 Ss_30_40_50 Metal sheet, fully supported roof and dormer covering systems 3 Ss_30_40_50_05 Aluminium sheet dormer covering systems 4 Ss_30_40_50_10 Aluminium sheet roof covering systems 4 Ss_30_40_50_12 Carbon steel sheet dormer covering systems 4 Ss_30_40_50_13 Carbon steel sheet roof covering systems 4 Ss_30_40_50_15 Copper sheet dormer covering systems 4 Ss_30_40_50_20 Copper sheet roof covering systems 4 Ss_30_40_50_40 Lead sheet dormer covering systems 4 Ss_30_40_50_45 Lead sheet roof covering systems 4 Ss_30_40_50_50 Lead-wrapped panel systems 4 Ss_30_40_50_75 Stainless steel sheet dormer covering systems 4 Ss_30_40_50_80 Stainless steel sheet roof covering systems 4 Ss_30_40_50_90 Zinc sheet dormer covering systems 4 Ss_30_40_50_95 Zinc sheet roof covering systems 4 Ss_30_40_55 Metal composite panel roof covering systems 3 Ss_30_40_55_10 Built up metal insulating sandwich panel roof systems 4 Ss_30_40_55_50 Metal composite panel roofing systems 4 Ss_30_40_55_54 Metal insulating sandwich panel roof systems 4 Ss_30_40_55_55 Metal semi-composite panel roofing systems 4 Ss_30_40_65 Profiled sheet roof covering systems 3 Ss_30_40_65_30 Fibre cement profiled sheet roof covering systems 4 Ss_30_40_65_50 Metal profiled sheet roof covering systems 4 Ss_30_40_65_60 Plastics profiled sheet roof covering systems 4 Ss_30_40_90 Tensile fabric roofing systems 3 Ss_30_40_90_40 Internal single layer tensile fabric roofing systems 4 Ss_30_40_90_50 Multilayer tensile fabric roofing systems 4 Ss_30_40_90_75 Single layer tensile fabric roofing systems 4 Ss_30_40_92 Thatch roof covering systems 3 Ss_30_40_92_85 Thatch roofing systems 4 Ss_30_40_95 Unit roofing systems 3 Ss_30_40_95_10 Bitumen membrane shingle roofing systems 4 Ss_30_40_95_15 Ceramic slate roofing systems 4 Ss_30_40_95_30 Fibre cement slate roofing systems 4 Ss_30_40_95_40 Interlocking tile roofing systems 4 Ss_30_40_95_50 Metal tile roofing systems 4 Ss_30_40_95_55 Natural slate roofing systems 4 Ss_30_40_95_60 Natural stone slate roofing systems 4 Ss_30_40_95_65 Plain tile roofing systems 4 Ss_30_40_95_70 Reconstituted slate roofing systems 4 Ss_30_40_95_74 Roofing edges and junction systems 4 Ss_30_40_95_95 Wood shake or shingle roofing systems 4 Ss_30_42 Floor covering and finishing systems 2 Ss_30_42_10 Calcium sulfate-based screed systems 3 Ss_30_42_10_10 Bonded calcium sulfate-based screed systems 4 Ss_30_42_10_30 Floating calcium sulfate-based screed systems 4 Ss_30_42_10_90 Unbonded calcium sulfate-based screed systems 4 Ss_30_42_15 Cementitious screed systems 3 Ss_30_42_15_10 Bonded or partially bonded cementitious levelling screed systems 4 Ss_30_42_15_15 Cementitious wearing screed systems 4 Ss_30_42_15_30 Floating cementitious levelling screed systems 4 Ss_30_42_15_90 Unbonded cementitious levelling screed systems 4 Ss_30_42_20 Deck covering systems 3 Ss_30_42_30 Floor paint systems 3 Ss_30_42_30_30 Floor coating systems 4 Ss_30_42_32 Floor tiling systems 3 Ss_30_42_32_30 External floor tiling systems 4 Ss_30_42_32_40 Internal floor tiling systems 4 Ss_30_42_40 Ice rink floor systems 3 Ss_30_42_50 Masonry flooring systems 3 Ss_30_42_52 Mastic asphalt flooring and floor underlay systems 3 Ss_30_42_52_50 Mastic asphalt flooring systems 4 Ss_30_42_52_52 Mastic asphalt floor underlay systems 4 Ss_30_42_54 Monolithic flooring systems 3 Ss_30_42_54_75 Resin flooring systems 4 Ss_30_42_72 Resilient and textile floor covering systems 3 Ss_30_42_72_05 Adhesive-fixed rolled carpet systems 4 Ss_30_42_72_10 Carpet tile systems 4 Ss_30_42_72_25 Edge-fixed carpet systems 4 Ss_30_42_72_72 Resilient sheet floor covering systems 4 Ss_30_42_72_75 Resilient tile floor covering systems 4 Ss_30_42_90 Terrazzo floor tiling and screed systems 3 Ss_30_42_90_90 Terrazzo floor covering systems 4 Ss_30_45 Pavement covering and finishing systems 2 Ss_30_47 Ceiling and soffit covering and finishing systems 2 Ss_30_60 Roof, floor and paving accessory systems 2 Ss_30_60_30 Floor feature systems 3 Ss_30_60_30_26 Entrance matting systems 4 Ss_30_60_50 Metal sheet roof flashing systems 3 Ss_30_60_50_03 Aluminium roof flashing systems 4 Ss_30_60_50_04 Aluminium roof weathering systems 4 Ss_30_60_50_11 Carbon steel roof flashing systems 4 Ss_30_60_50_12 Carbon steel roof weathering systems 4 Ss_30_60_50_19 Copper roof flashing systems 4 Ss_30_60_50_20 Copper roof weathering systems 4 Ss_30_60_50_47 Lead roof flashing systems 4 Ss_30_60_50_48 Lead roof weathering systems 4 Ss_30_60_50_84 Stainless steel roof flashing systems 4 Ss_30_60_50_85 Stainless steel roof weathering systems 4 Ss_30_60_50_98 Zinc roof flashing systems 4 Ss_30_60_50_99 Zinc roof weathering systems 4 Ss_30_60_70 Roof feature systems 3 Ss_30_75 Roof, floor and paving drainage systems 2 Ss_30_75_40 Kerb and channel systems 3 Ss_30_75_40_30 Footway grating systems 4 Ss_30_75_40_50 Multi unit surface drainage channel systems 4 Ss_30_75_40_75 Single unit surface drainage channel systems 4 Ss_30_75_45 Kerb and traffic separation systems 3 Ss_30_75_45_03 Asphalt kerb systems 4 Ss_30_75_45_15 Concrete kerb systems 4 Ss_30_75_45_20 Demarcation paving systems 4 Ss_30_75_45_45 Light duty kerb systems 4 Ss_30_75_45_55 Multi unit traffic calming systems 4 Ss_30_75_45_65 Precast kerb systems 4 Ss_30_75_45_80 Single unit traffic calming systems 4 Ss_30_75_45_85 Traffic kerb systems 4 Ss_30_75_45_86 Traffic separation systems 4 Ss_30_75_50 Metal sheet gutter lining systems 3 Ss_30_75_50_05 Aluminium sheet gutter lining systems 4 Ss_30_75_50_11 Carbon steel sheet gutter lining systems 4 Ss_30_75_50_15 Copper sheet gutter lining systems 4 Ss_30_75_50_45 Lead sheet gutter lining systems 4 Ss_30_75_50_75 Stainless steel sheet gutter lining systems 4 Ss_30_75_50_95 Zinc sheet gutter lining systems 4 Ss_30_95 Temporary roof, floor and paving systems 2 Ss_32 Damp proofing, waterproofing and plaster finishing systems 1 Ss_32_20 Damp proofing systems 2 Ss_32_20_20 Damp proof courses renewal and insertion systems 3 Ss_32_20_20_15 Chemical injection damp proof course systems 4 Ss_32_20_20_62 Physical insertion horizontal damp proof course systems 4 Ss_32_20_20_63 Physical insertion horizontal or stepped cavity tray systems 4 Ss_32_20_20_64 Physical insertion proprietary rising damp remedial systems 4 Ss_32_20_20_65 Physical insertion vertical damp proof course systems 4 Ss_32_20_30 Floor damp proofing systems 3 Ss_32_20_30_10 Cementitious mortar slurry floor damp proofing systems 4 Ss_32_20_30_15 Cold-applied liquid floor damp proofing systems 4 Ss_32_20_30_30 Fully-bonded bitumen membrane overslab damp proofing systems 4 Ss_32_20_30_35 Fully-bonded bitumen membrane underslab damp proofing systems 4 Ss_32_20_30_40 Hot-applied liquid floor damp proofing systems 4 Ss_32_20_30_45 Loose-laid bitumen membrane overslab damp proofing systems 4 Ss_32_20_30_46 Loose-laid bitumen membrane underslab damp proofing systems 4 Ss_32_20_30_48 Loose-laid polyethylene membrane oversite damp proofing systems 4 Ss_32_20_30_50 Loose-laid polyethylene membrane overslab damp proofing systems 4 Ss_32_20_30_51 Loose-laid polyethylene membrane underslab damp proofing systems 4 Ss_32_20_30_55 Mastic asphalt floor damp proofing systems 4 Ss_32_20_30_60 Plastics studded membrane floor damp proofing systems 4 Ss_32_20_30_65 Pre-applied anchored membrane underslab damp proofing systems 4 Ss_32_20_30_75 Self-adhesive bitumen membrane floor damp proofing systems 4 Ss_32_20_95 Wall damp proofing systems 3 Ss_32_20_95_10 Cementitious mortar slurry internal wall damp proofing systems 4 Ss_32_20_95_15 Cold-applied liquid internal wall damp proofing systems 4 Ss_32_20_95_65 Plastics studded membrane internal wall damp-proofing systems 4 Ss_32_46 Lath and plaster systems 2 Ss_32_46_50 Metal lathing and anchored mesh reinforcement systems 3 Ss_32_46_50_05 Anchored mesh reinforcement systems 4 Ss_32_46_50_50 Metal lathing casing systems 4 Ss_32_46_50_51 Metal lathing on framing systems 4 Ss_32_46_50_52 Metal lathing on hangers, bearers and runners systems 4 Ss_32_46_50_53 Metal lathing on solid substrate systems 4 Ss_32_46_65 Plaster coating systems 3 Ss_32_46_65_15 Clay plaster systems 4 Ss_32_46_65_55 Multicoat plaster systems 4 Ss_32_46_65_58 One coat plaster systems 4 Ss_32_46_65_90 Tiling and mosaic plaster substrate systems 4 Ss_32_80 Waterproofing and tanking systems 2 Ss_32_80_03 Applied waterproofing and tanking systems 3 Ss_32_80_03_08 Bridge deck liquid sprayed systems 4 Ss_32_80_03_10 Cementitious proprietary mortar slurry tanking systems 4 Ss_32_80_03_12 Cementitious site-batched-and-mixed mortar tanking systems 4 Ss_32_80_03_14 Cold-applied liquid external tanking systems 4 Ss_32_80_03_16 Cold-applied liquid sandwiched tanking systems 4 Ss_32_80_03_18 Crystallization-active cementitious mortar dry shake tanking systems 4 Ss_32_80_03_20 Crystallization-active cementitious mortar slurry tanking systems 4 Ss_32_80_03_40 Interstitial grouting systems 4 Ss_32_80_03_50 Mastic asphalt external tanking systems 4 Ss_32_80_03_52 Mastic asphalt sandwiched tanking systems 4 Ss_32_80_03_54 Mastic asphalt tank lining systems 4 Ss_32_80_03_90 Tunnel spray-applied membrane systems 4 Ss_32_80_79 Sheeted waterproofing and tanking systems 3 Ss_32_80_79_08 Bridge deck sheet systems 4 Ss_32_80_79_30 Fully bonded bitumen membrane external tanking systems 4 Ss_32_80_79_32 Fully bonded bitumen membrane sandwiched tanking systems 4 Ss_32_80_79_33 Fully bonded flexible sheet membrane waterproofing systems 4 Ss_32_80_79_35 Ground supported water retention sheet lining systems 4 Ss_32_80_79_36 Hard rigid plastics sheet membrane waterproofing systems 4 Ss_32_80_79_40 High density plastics studded membrane cavity drain waterproofing systems 4 Ss_32_80_79_45 Loose-laid bentonite membrane external or sandwiched tanking systems 4 Ss_32_80_79_75 Self-adhesive bitumen membrane external tanking systems 4 Ss_32_80_79_77 Self-adhesive bitumen membrane sandwiched tanking systems 4 Ss_32_80_79_84 Steel membrane waterproofing systems 4 Ss_32_80_79_85 Structure supported water retention sheet lining systems 4 Ss_32_80_79_90 Tunnel sheet membrane systems 4 Ss_32_80_79_92 Unbonded flexible sheet membrane waterproofing systems 4 Ss_35 Stair and ramp systems 1 Ss_35_10 Stair and ramp structure systems 2 Ss_35_10_25 External stair and ramp systems 3 Ss_35_10_25_34 Ground bearing external ramp systems 4 Ss_35_10_25_35 Ground bearing external stair systems 4 Ss_35_10_25_83 Suspended external ramp systems 4 Ss_35_10_25_85 Suspended external stair systems 4 Ss_35_10_30 Fixed utilitarian access systems 3 Ss_35_10_30_15 Companionway ladder systems 4 Ss_35_10_30_40 Industrial stair systems 4 Ss_35_10_30_60 Permanently-fixed roof ladder systems 4 Ss_35_10_30_62 Permanently-fixed vertical ladder systems 4 Ss_35_10_30_95 Working platform and walkway systems 4 Ss_35_10_40 Internal stair and ramp systems 3 Ss_35_10_40_20 Curved internal stair systems 4 Ss_35_10_40_40 Internal ramp systems 4 Ss_35_10_40_42 Internal stair systems 4 Ss_35_10_40_84 Straight internal stair systems 4 Ss_35_10_50 Marine and waterside ramp systems 3 Ss_35_10_50_29 Fixed ramp systems 4 Ss_35_10_50_31 Floating pontoon ramp systems 4 Ss_35_10_50_42 Integral pontoon ramp systems 4 Ss_35_10_85 Structural stair and ramp systems 3 Ss_35_10_85_15 Concrete stair or ramp systems 4 Ss_35_10_85_35 Heavy steel stair or ramp systems 4 Ss_35_10_85_65 Precast concrete stair or ramp systems 4 Ss_35_10_85_90 Timber stair or ramp systems 4 Ss_35_30 Stair and ramp opening systems 2 Ss_35_30_15 Concrete stair and ramp glazing systems 3 Ss_35_30_15_15 Concrete stair tread glazing systems 4 Ss_35_40 Stair and ramp covering and finishing systems 2 Ss_35_40_82 Stair carpeting systems 3 Ss_35_40_82_05 Adhesive-fixed stair carpeting systems 4 Ss_35_95 Temporary stair and ramp systems 2 Ss_37 Tunnel, shaft, vessel and tower systems 1 Ss_37_14 Chute systems 2 Ss_37_14_10 Bulk material chute systems 3 Ss_37_14_25 Escape chute systems 3 Ss_37_14_70 Refuse and linen chute systems 3 Ss_37_14_70_08 Built-in linen chute systems 4 Ss_37_14_70_10 Built-in refuse chute systems 4 Ss_37_14_70_63 Post-fixed linen chute systems 4 Ss_37_14_70_65 Post-fixed refuse chute systems 4 Ss_37_16 Vessel and trench systems 2 Ss_37_16_02 Above ground pool systems 3 Ss_37_16_05 Basement water retaining systems 3 Ss_37_16_10 Bund systems 3 Ss_37_16_10_32 Fuel tank bund systems 4 Ss_37_16_50 Metal and plastics water retaining systems 3 Ss_37_16_65 Pond and wetland systems 3 Ss_37_16_65_40 Informal pond systems 4 Ss_37_16_65_70 Raised formal pond systems 4 Ss_37_16_65_85 Submerged formal pond systems 4 Ss_37_16_65_95 Wetland systems 4 Ss_37_16_75 Silo systems 3 Ss_37_16_90 Trench, pipeway and pit systems 3 Ss_37_16_90_11 Cable protection systems 4 Ss_37_16_90_28 External underground service duct systems 4 Ss_37_16_90_63 Pit systems 4 Ss_37_16_95 Watertight structural systems 3 Ss_37_16_95_78 Sewage treatment vessel systems 4 Ss_37_17 Tower, chimney and mast systems 2 Ss_37_17_13 Chimney systems 3 Ss_37_17_13_50 Masonry chimney stack systems 4 Ss_37_17_13_65 Pollution control systems 4 Ss_37_17_35 Gantry systems 3 Ss_37_17_35_11 Cantilever gantry systems 4 Ss_37_17_35_32 Full span gantry systems 4 Ss_37_17_35_50 Mast arm sign gantry systems 4 Ss_37_17_35_60 Portal sign gantry systems 4 Ss_37_17_35_70 Reefer gantry systems 4 Ss_37_17_45 Lattice tower and pylon systems 3 Ss_37_17_50 Mast and pole systems 3 Ss_37_17_50_54 Multi-function pole systems 4 Ss_37_17_50_72 Road mast systems 4 Ss_37_17_90 Tower systems 3 Ss_37_40 Tunnel, shaft, vessel and tower covering and finishing systems 2 Ss_37_40_85 Swimming pool tiling systems 3 Ss_37_40_85_83 Swimming pool floor tiling systems 4 Ss_37_40_85_85 Swimming pool wall tiling systems 4 Ss_37_50 Shaft and tunnel structural systems 2 Ss_37_50_80 Shaft structure systems 3 Ss_37_50_80_50 Masonry lined shaft systems 4 Ss_37_50_80_71 Reinforced concrete shaft structure systems 4 Ss_37_50_80_77 Segmental shaft structure systems 4 Ss_37_50_80_83 Sprayed concrete shaft lining systems 4 Ss_37_50_80_90 Unit lined shaft systems 4 Ss_37_50_92 Tunnel structure systems 3 Ss_37_50_92_11 Cast concrete tunnel invert systems 4 Ss_37_50_92_15 Colliery arch tunnel or adit systems 4 Ss_37_50_92_50 Masonry tunnel structure systems 4 Ss_37_50_92_64 Primary regulating layer sprayed concrete lining systems 4 Ss_37_50_92_66 Primary sprayed concrete lining systems 4 Ss_37_50_92_71 Reinforced concrete tunnel structure systems 4 Ss_37_50_92_75 Secondary cast concrete lining systems 4 Ss_37_50_92_76 Secondary regulating layer sprayed concrete lining systems 4 Ss_37_50_92_77 Secondary sprayed concrete lining systems 4 Ss_37_50_92_79 Sectional tunnel structure systems 4 Ss_37_50_92_83 Sprayed concrete tunnel lining systems 4 Ss_37_50_92_90 Unit lined tunnel systems 4 Ss_37_55 Tunnel and shaft opening systems 2 Ss_37_55_60 Opening frame systems 3 Ss_37_55_60_90 Tunnel opening frame systems 4 Ss_37_60 Tunnel, shaft, vessel and tower accessory systems 2 Ss_37_95 Temporary tunnel, shaft, vessel and tower systems 2 Ss_40 Signage, fittings, furnishings and equipment (FF&E) and general finishing systems 1 Ss_40_05 Modular systems 2 Ss_40_05_80 Sanitary modular systems 3 Ss_40_05_80_10 Bathroom pod systems 4 Ss_40_10 Signage systems 2 Ss_40_10_20 Direction signage systems 3 Ss_40_10_20_70 Route marker signage systems 4 Ss_40_10_20_96 Wayfinding signage systems 4 Ss_40_10_25 External signage and interpretation systems 3 Ss_40_10_25_25 Electrical external signage systems 4 Ss_40_10_25_30 Fixed external signage systems 4 Ss_40_10_25_32 Free-standing external architectural signage systems 4 Ss_40_10_30 Fire and safety signage systems 3 Ss_40_10_30_20 Emergency 'do not enter' signage systems 4 Ss_40_10_30_25 Evacuation and safe condition signage systems 4 Ss_40_10_30_27 Evacuation and safety way guidance systems 4 Ss_40_10_30_30 Fire signage systems 4 Ss_40_10_30_36 Hazard signage systems 4 Ss_40_10_30_70 Regulatory signage systems 4 Ss_40_10_30_75 Safety signage systems 4 Ss_40_10_30_93 Warning signage systems 4 Ss_40_10_30_95 Water safety signage systems 4 Ss_40_10_35 Identification signage systems 3 Ss_40_10_35_10 Building signage systems 4 Ss_40_10_35_70 Room signage systems 4 Ss_40_10_35_80 Spaces signage systems 4 Ss_40_10_40 Internal architectural signage systems 3 Ss_40_10_40_25 Electrical internal architectural signage systems 4 Ss_40_10_40_30 Fixed internal architectural signage systems 4 Ss_40_10_40_32 Free-standing internal architectural signage systems 4 Ss_40_10_50 Information signage systems 3 Ss_40_10_50_03 Advertising signage systems 4 Ss_40_10_50_05 Advisory signage systems 4 Ss_40_10_50_22 Descriptive signage systems 4 Ss_40_10_50_24 Directory signage systems 4 Ss_40_10_50_42 Interpretive signage systems 4 Ss_40_10_90 Traffic signage and marking systems 3 Ss_40_10_90_03 Air traffic signage systems 4 Ss_40_10_90_18 Crossing road marking systems 4 Ss_40_10_90_20 Cycle traffic signage systems 4 Ss_40_10_90_23 Diagrammatic road marking systems 4 Ss_40_10_90_36 Hatched road marking systems 4 Ss_40_10_90_50 Marine traffic signage systems 4 Ss_40_10_90_70 Rail traffic signage systems 4 Ss_40_10_90_72 Road traffic signage systems 4 Ss_40_15 General fittings, furnishings and equipment (FF&E) systems 2 Ss_40_15_25 Catering FF&E systems 3 Ss_40_15_25_15 Commercial catering FF&E systems 4 Ss_40_15_25_20 Domestic catering FF&E systems 4 Ss_40_15_35 General and joinery FF&E systems 3 Ss_40_15_35_35 General FF&E systems 4 Ss_40_15_35_50 Minor joinery systems 4 Ss_40_15_46 Laundry FF&E systems 3 Ss_40_15_46_15 Commercial laundry FF&E systems 4 Ss_40_15_46_20 Domestic laundry FF&E systems 4 Ss_40_15_58 Office equipment systems 3 Ss_40_15_58_50 Meeting booth systems 4 Ss_40_15_75 Sanitary appliance systems 3 Ss_40_15_75_05 Bath systems 4 Ss_40_15_75_10 Bidet systems 4 Ss_40_15_75_20 Disposal unit (slop hopper) systems 4 Ss_40_15_75_25 Drinking fountain systems 4 Ss_40_15_75_35 Health care macerator systems 4 Ss_40_15_75_45 Janitorial unit systems 4 Ss_40_15_75_75 Sanitary accessory systems 4 Ss_40_15_75_76 Sauna package systems 4 Ss_40_15_75_77 Scrub-up trough systems 4 Ss_40_15_75_78 Shower area systems 4 Ss_40_15_75_79 Shower cubicle systems 4 Ss_40_15_75_80 Sink systems 4 Ss_40_15_75_85 Steam bath package systems 4 Ss_40_15_75_92 Urinal systems 4 Ss_40_15_75_94 Wash basin systems 4 Ss_40_15_75_96 Wash fountain systems 4 Ss_40_15_75_98 Wash trough systems 4 Ss_40_15_77 Sauna FF&E systems 3 Ss_40_15_90 Toilet systems 3 Ss_40_15_90_05 Accessible WC package systems 4 Ss_40_15_90_85 Squatting WC systems 4 Ss_40_15_90_95 Waterless toilet systems 4 Ss_40_15_90_96 WC and wash basin combination systems 4 Ss_40_15_90_97 WC systems 4 Ss_40_15_90_98 WC wash and dry combination systems 4 Ss_40_20 Administrative, commercial and protective service FF&E systems 2 Ss_40_20_01 Administrative FF&E systems 3 Ss_40_20_01_27 Embassy FF&E systems 4 Ss_40_20_01_60 Office FF&E systems 4 Ss_40_20_01_71 Reception FF&E systems 4 Ss_40_20_15 Commercial FF&E systems 3 Ss_40_20_15_71 Retail FF&E systems 4 Ss_40_20_15_89 Trading floor FF&E systems 4 Ss_40_20_30 External public realm FF&E systems 3 Ss_40_20_30_01 Acceptance and dispensing systems 4 Ss_40_20_30_20 Cycle parking equipment systems 4 Ss_40_20_30_28 External furniture systems 4 Ss_40_20_30_30 Fixed bin systems 4 Ss_40_20_30_65 Playground equipment systems 4 Ss_40_20_65 Protective service FF&E systems 3 Ss_40_20_65_22 Detention FF&E systems 4 Ss_40_20_65_25 Emergency shelter FF&E systems 4 Ss_40_20_65_46 Law court FF&E systems 4 Ss_40_25 Cultural, educational, scientific and information FF&E systems 2 Ss_40_25_20 Cultural FF&E systems 3 Ss_40_25_20_02 Aquarium FF&E systems 4 Ss_40_25_20_03 Art gallery FF&E systems 4 Ss_40_25_20_04 Artwork systems 4 Ss_40_25_20_05 Auditorium FF&E systems 4 Ss_40_25_20_22 Display FF&E systems 4 Ss_40_25_20_28 Exhibition FF&E systems 4 Ss_40_25_20_85 Studio FF&E systems 4 Ss_40_25_20_90 Theatre FF&E systems 4 Ss_40_25_26 Education and information FF&E systems 3 Ss_40_25_26_15 Classroom FF&E systems 4 Ss_40_25_26_47 Library FF&E systems 4 Ss_40_25_32 Funerary FF&E systems 3 Ss_40_25_32_12 Cemetery equipment systems 4 Ss_40_25_71 Religious FF&E systems 3 Ss_40_25_71_11 Cathedral, church and chapel FF&E systems 4 Ss_40_25_71_52 Mosque FF&E systems 4 Ss_40_25_71_86 Synagogue FF&E systems 4 Ss_40_25_71_90 Temple FF&E systems 4 Ss_40_25_75 Scientific FF&E systems 3 Ss_40_25_75_21 Dark room FF&E systems 4 Ss_40_25_75_45 Laboratory FF&E systems 4 Ss_40_25_75_58 Observatory FF&E systems 4 Ss_40_25_80 Stage FF&E systems 3 Ss_40_25_80_90 Tension wire grid systems 4 Ss_40_30 Industrial and agricultural FF&E systems 2 Ss_40_30_02 Agricultural FF&E systems 3 Ss_40_30_02_37 Horticultural FF&E systems 4 Ss_40_30_02_47 Livestock FF&E systems 4 Ss_40_30_42 Industrial FF&E systems 3 Ss_40_30_42_29 Factory FF&E systems 4 Ss_40_30_42_52 Mine FF&E systems 4 Ss_40_30_42_58 Offshore platform FF&E systems 4 Ss_40_30_42_96 Warehouse FF&E systems 4 Ss_40_30_85 Static permanent access and safety equipment systems 3 Ss_40_30_85_55 Netting systems 4 Ss_40_45 Living space FF&E systems 2 Ss_40_45_37 Hotel living space FF&E systems 3 Ss_40_45_37_28 External FF&E systems 4 Ss_40_45_37_36 Hotel bedroom FF&E systems 4 Ss_40_45_37_38 Hotel dining room FF&E systems 4 Ss_40_45_37_45 Kitchen FF&E systems 4 Ss_40_45_37_47 Lounge FF&E systems 4 Ss_40_45_70 Residential living space FF&E systems 3 Ss_40_45_70_07 Bedroom FF&E systems 4 Ss_40_45_70_22 Dining room FF&E systems 4 Ss_40_45_70_24 Domestic kitchen FF&E systems 4 Ss_40_45_70_33 Garden FF&E systems 4 Ss_40_45_70_47 Living room FF&E systems 4 Ss_40_50 Medical, health and welfare FF&E systems 2 Ss_40_50_50 Medical and health FF&E systems 3 Ss_40_50_50_18 Cr?che FF&E systems 4 Ss_40_50_50_37 Hospital ward FF&E systems 4 Ss_40_50_50_50 Medical and dental surgery FF&E systems 4 Ss_40_50_50_59 Operating theatre FF&E systems 4 Ss_40_50_96 Welfare FF&E systems 3 Ss_40_50_96_04 Animal welfare FF&E systems 4 Ss_40_50_96_71 Rehabilitation FF&E systems 4 Ss_40_70 Recreational FF&E systems 2 Ss_40_70_20 Casino FF&E systems 3 Ss_40_70_55 Play FF&E systems 3 Ss_40_70_55_10 Climbing equipment systems 4 Ss_40_70_55_15 Combination play equipment systems 4 Ss_40_70_55_35 Gymnastics and exercising equipment systems 4 Ss_40_70_55_70 Rocking equipment systems 4 Ss_40_70_55_73 Runway equipment systems 4 Ss_40_70_55_75 Sand and water play equipment systems 4 Ss_40_70_55_80 Slide equipment systems 4 Ss_40_70_55_83 Spinning equipment systems 4 Ss_40_70_55_85 Swinging equipment systems 4 Ss_40_70_60 Pool FF&E systems 3 Ss_40_70_60_15 Competitive swimming pool FF&E systems 4 Ss_40_70_60_25 Diving pool FF&E systems 4 Ss_40_70_60_45 Leisure swimming pool FF&E systems 4 Ss_40_70_60_62 Pool transfer aid equipment systems 4 Ss_40_70_65 Public house FF&E systems 3 Ss_40_70_70 Restaurant FF&E systems 3 Ss_40_70_75 Sports FF&E systems 3 Ss_40_70_75_05 Ball court FF&E systems 4 Ss_40_70_75_20 Cycle course FF&E systems 4 Ss_40_70_75_27 Equestrian equipment systems 4 Ss_40_70_75_50 Multi-use games area FF&E systems 4 Ss_40_70_75_80 Skate park FF&E systems 4 Ss_40_70_75_85 Sports pitch FF&E systems 4 Ss_40_70_75_90 Trim trail FF&E systems 4 Ss_40_70_80 Stadium FF&E systems 3 Ss_40_70_95 Wildlife, eco site and nature conservation FF&E systems 3 Ss_40_85 Transport FF&E systems 2 Ss_40_85_01 Aerospace FF&E systems 3 Ss_40_85_01_01 Aircraft fire training simulation systems 4 Ss_40_85_11 Cable transport FF&E systems 3 Ss_40_85_50 Marine and waterway FF&E systems 3 Ss_40_85_50_95 Waterside FF&E systems 4 Ss_40_85_70 Rail FF&E systems 3 Ss_40_85_70_60 Passenger concourse FF&E systems 4 Ss_40_85_72 Road FF&E systems 3 Ss_40_85_72_11 Car park equipment systems 4 Ss_40_85_72_33 Garage FF&E systems 4 Ss_40_85_75 Rolling stock depot systems 3 Ss_40_85_75_07 Bogie handling systems 4 Ss_40_85_75_15 Controlled emission toilet (CET) systems 4 Ss_40_85_75_24 Drop systems 4 Ss_40_85_75_65 Press systems 4 Ss_40_85_75_70 Rail lifting systems 4 Ss_40_85_75_75 Sand feeding systems 4 Ss_40_85_75_97 Wheel lathe systems 4 Ss_40_90 General finishing systems 2 Ss_40_90_05 Anodizing systems 3 Ss_40_90_05_05 Aluminium anodic coating systems 4 Ss_40_90_35 Hot dip galvanizing systems 3 Ss_40_90_40 Intumescent systems 3 Ss_40_90_40_40 Intumescent casting systems 4 Ss_40_90_40_42 Intumescent coating systems 4 Ss_40_90_60 Painting and clear finishing systems 3 Ss_40_90_60_05 Anti-graffiti coating systems 4 Ss_40_90_60_20 Decorative varnish or lacquer systems 4 Ss_40_90_60_22 Decorative wood stain or dye systems 4 Ss_40_90_60_55 Multi-colour coating systems 4 Ss_40_90_60_60 Oil gilding systems 4 Ss_40_90_60_65 Plastic texture coating systems 4 Ss_40_90_60_80 Solvent-borne paint systems 4 Ss_40_90_60_85 Special coating systems 4 Ss_40_90_60_94 Water-based anti-corrosion systems 4 Ss_40_90_60_95 Waterborne paint systems 4 Ss_40_90_65 Powder coating systems 3 Ss_40_90_65_05 Powder coating for aluminium systems 4 Ss_40_90_65_85 Powder coating for steel systems 4 Ss_40_90_75 Services painting systems 3 Ss_40_90_95 Wood preservative and fire retardant treatment systems 3 Ss_40_90_95_30 Fire retardant treatment systems 4 Ss_40_90_95_65 Preservative treatment systems 4 Ss_40_95 Temporary signage and FF&E systems 2 Ss_45 Flora and fauna systems 1 Ss_45_05 Ecosystems 2 Ss_45_10 Flora and fauna control systems 2 Ss_45_10_10 Bird, insect and vermin control systems 3 Ss_45_10_10_04 Animal control systems 4 Ss_45_10_10_10 Bird control systems 4 Ss_45_10_10_14 Chemical termite protection systems 4 Ss_45_10_10_40 Insect control systems 4 Ss_45_10_10_64 Physical termite protection systems 4 Ss_45_10_10_72 Rodent control systems 4 Ss_45_10_40 Invasive microbial and invertebrate control systems 3 Ss_45_10_40_40 Invertebrate control systems 4 Ss_45_10_40_50 Microbial control systems 4 Ss_45_10_95 Vegetation control systems 3 Ss_45_10_95_50 Moss, algae and lichen control systems 4 Ss_45_10_95_72 Rooted plants on hard surfaces control systems 4 Ss_45_10_95_80 Selective vegetation control systems 4 Ss_45_10_95_81 Self-clinging plants on hard surfaces control systems 4 Ss_45_10_95_83 Site vegetation control systems 4 Ss_45_10_95_95 Waterborne vegetation control systems 4 Ss_45_30 Aquatic flora systems 2 Ss_45_30_05 Aquatic and wetland planting systems 3 Ss_45_30_05_05 Aquatic planting systems 4 Ss_45_30_05_50 Marginal planting systems 4 Ss_45_30_05_70 Reedbed planting systems 4 Ss_45_30_40 Hydroponic planting systems 3 Ss_45_35 Ground based flora systems 2 Ss_45_35_05 Amenity and ornamental planting systems 3 Ss_45_35_05_08 Bed-planted annual, perennial and bulb systems 4 Ss_45_35_05_35 Grass-planted bulb and wildflower systems 4 Ss_45_35_05_37 Grass-planted small tree and shrub systems 4 Ss_45_35_05_42 Long-stem planted small tree and shrub systems 4 Ss_45_35_05_62 Pit-planted climber systems 4 Ss_45_35_05_64 Pit-planted perennial systems 4 Ss_45_35_05_66 Pit-planted large tree systems 4 Ss_45_35_05_67 Pit-planted small tree and shrub systems 4 Ss_45_35_08 Biodiversity and environmental conservation systems 3 Ss_45_35_08_29 Flora species introduction systems 4 Ss_45_35_08_30 Flora species protection systems 4 Ss_45_35_08_35 Habitat creation systems 4 Ss_45_35_08_37 Habitat management and enhancement systems 4 Ss_45_35_08_38 Habitat protection systems 4 Ss_45_35_30 Forestry, biomass, hedging and roadside planting systems 3 Ss_45_35_30_40 Hydraulic seeded tree and shrub systems 4 Ss_45_35_30_55 Notch-planted tree and shrub systems 4 Ss_45_35_30_62 Pit-planted tree and shrub systems 4 Ss_45_35_30_72 Ridge and furrow-planted tree and shrub systems 4 Ss_45_35_30_75 Seeded tree and shrub systems 4 Ss_45_35_30_90 Trench-planted tree and shrub systems 4 Ss_45_35_45 Lawn and meadow planting systems 3 Ss_45_35_45_33 Grass and wildflower seeding systems 4 Ss_45_35_45_35 Grass seeding systems 4 Ss_45_35_45_40 Hydraulic seeding systems 4 Ss_45_35_45_62 Plastics paving and turf systems 4 Ss_45_35_45_65 Pre-seeded mat systems 4 Ss_45_35_45_70 Reinforced grass planting systems 4 Ss_45_35_45_90 Turf planting systems 4 Ss_45_40 Artificially supported flora systems 2 Ss_45_40_28 External container planting systems 3 Ss_45_40_28_25 External planter systems 4 Ss_45_40_28_32 Free standing external container planting systems 4 Ss_45_40_28_35 Hanging container planting systems 4 Ss_45_40_28_85 External planting systems 4 Ss_45_40_40 Internal container planting systems 3 Ss_45_40_40_32 Free standing internal container planting systems 4 Ss_45_40_40_34 Ground level internal container planting systems 4 Ss_45_40_40_41 Internal hanging container planting systems 4 Ss_45_40_40_42 Internal planter systems 4 Ss_45_40_47 Living roof systems 3 Ss_45_40_47_09 Brown roof systems 4 Ss_45_40_47_28 Extensive green roof systems 4 Ss_45_40_47_40 Intensive green roof systems 4 Ss_45_40_47_75 Semi-intensive green roof systems 4 Ss_45_40_95 Vertical planting systems 3 Ss_45_40_95_08 Biofiltration vertical planting systems 4 Ss_45_40_95_52 Membranous vertical planting systems 4 Ss_45_40_95_54 Modular unit vertical planting systems 4 Ss_45_50 Artificial flora systems 2 Ss_45_50_05 Artificial planting systems 3 Ss_45_50_05_40 Internal artificial planting systems 4 Ss_45_60 Avian fauna systems 2 Ss_45_65 Insectile fauna systems 2 Ss_45_70 Mammalian fauna systems 2 Ss_45_70_05 Animal conservation systems 3 Ss_45_70_05_27 Animal road crossing systems 4 Ss_45_70_05_29 Animal species introduction systems 4 Ss_45_70_05_30 Animal species protection systems 4 Ss_45_75 Piscine fauna systems 2 Ss_45_75_30 Fish, eel and lamprey pass systems 3 Ss_45_75_30_03 Alaskan A baffle pass systems 4 Ss_45_75_30_06 Baffle and brush pass systems 4 Ss_45_75_30_09 Brush furnished baffle pass systems 4 Ss_45_75_30_13 Chevron bottom baffle pass systems 4 Ss_45_75_30_21 Deep notch and orifice pool pass systems 4 Ss_45_75_30_23 Deep notch no orifice pool pass systems 4 Ss_45_75_30_30 Fish pass systems 4 Ss_45_75_30_46 Larinier super active baffle pass systems 4 Ss_45_75_30_63 Plane baffle denil pass systems 4 Ss_45_75_30_65 Pool and orifice pass systems 4 Ss_45_75_30_67 Pool and traverse pass systems 4 Ss_45_75_30_77 Shallow v notch pool pass systems 4 Ss_45_75_30_94 Vertical slot pool pass systems 4 Ss_45_80 Reptilian fauna systems 2 Ss_45_85 Artificial fauna systems 2 Ss_50 Disposal systems 1 Ss_50_10 Gas waste collection and distribution systems 2 Ss_50_10_45 Landfill gas collection and distribution systems 3 Ss_50_10_95 Waste gas collection and distribution systems 3 Ss_50_20 Non-aqueous liquid waste collection and distribution systems 2 Ss_50_20_45 Landfill liquid collection and distribution systems 3 Ss_50_20_90 Waste liquid fuel collection and distribution systems 3 Ss_50_20_95 Waste process liquid collection and distribution systems 3 Ss_50_30 Building and land drainage collection systems 2 Ss_50_30_02 Rainwater drainage systems 3 Ss_50_30_02_28 External gravity rainwater drainage systems 4 Ss_50_30_02_40 Internal gravity rainwater drainage systems 4 Ss_50_30_02_65 Pressure-assisted full bore rainwater drainage systems 4 Ss_50_30_02_80 Siphonic full bore rainwater drainage systems 4 Ss_50_30_04 Above ground waste water drainage systems 3 Ss_50_30_04_05 Basement waste water drainage systems 4 Ss_50_30_04_15 Commercial catering waste water drainage systems 4 Ss_50_30_04_95 Above ground external stack wastewater drainage systems 4 Ss_50_30_04_97 Above ground internal stack wastewater drainage systems 4 Ss_50_30_06 Below ground inspection systems 3 Ss_50_30_06_06 Brick manhole systems 4 Ss_50_30_06_08 Brick shallow inspection chamber systems 4 Ss_50_30_06_10 Brick shallow silt trap and flow control chamber systems 4 Ss_50_30_06_12 Concrete deep manhole systems 4 Ss_50_30_06_14 Concrete manhole systems 4 Ss_50_30_06_16 Concrete shallow inspection chamber systems 4 Ss_50_30_06_18 Concrete silt trap and flow control chamber systems 4 Ss_50_30_06_62 Plastics deep non-entry inspection chamber systems 4 Ss_50_30_06_64 Plastics distribution and sampling chamber systems 4 Ss_50_30_06_66 Plastics shallow inspection chamber systems 4 Ss_50_30_08 Below ground gravity drainage systems 3 Ss_50_30_08_15 Combined below-ground drainage pipeline systems 4 Ss_50_30_08_16 Combined sewer overflow systems 4 Ss_50_30_08_30 Foul waste water below-ground drainage pipeline systems 4 Ss_50_30_08_85 Surface water below-ground drainage pipeline systems 4 Ss_50_30_10 Below ground pumped drainage systems 3 Ss_50_30_10_06 Below-ground private packaged pumping station and pressure pipeline drainage systems 4 Ss_50_30_45 Land drainage systems 3 Ss_50_30_45_08 Blanket drain land drainage systems 4 Ss_50_30_45_20 Culvert land drainage systems 4 Ss_50_30_45_30 Filter drain land drainage systems 4 Ss_50_30_45_32 Fin drain piped land drainage systems 4 Ss_50_30_45_53 Mole or subsoiling drain land drainage systems 4 Ss_50_30_45_55 Narrow slot fin drain land drainage systems 4 Ss_50_30_45_75 Slitting or grooving land drainage systems 4 Ss_50_30_45_85 Subsoil drainage pipe drain systems 4 Ss_50_30_45_90 Trenchless drain land drainage systems 4 Ss_50_35 Utility surface and waste water drainage collection systems 2 Ss_50_35_65 Pressure relief drainage systems 3 Ss_50_35_65_08 Blanket drain pressure relief systems 4 Ss_50_35_65_30 Filter drain pressure relief systems 4 Ss_50_35_65_35 Geocomposite sheet fin drain pressure relief systems 4 Ss_50_35_80 Storm water gravity drainage systems 3 Ss_50_35_80_10 Bifurcation storm water overflow systems 4 Ss_50_35_80_72 Rigid attenuation or storage tank for stormwater flood attenuation systems 4 Ss_50_35_82 Surface and waste water gravity drainage systems 3 Ss_50_35_82_41 Inlet drainage systems 4 Ss_50_35_82_59 Outlet drainage systems 4 Ss_50_35_82_73 Road drainage systems 4 Ss_50_35_85 Surface and waste water pumped drainage systems 3 Ss_50_40 Solid waste collection and distribution systems 2 Ss_50_40_95 Waste collection systems 3 Ss_50_40_95_65 Pneumatic waste collection systems 4 Ss_50_50 Gas waste storage, treatment and disposal systems 2 Ss_50_50_45 Landfill gas disposal systems 3 Ss_50_50_95 Waste gas treatment and disposal systems 3 Ss_50_60 Non-aqueous liquid waste storage, treatment and disposal systems 2 Ss_50_60_45 Landfill liquid disposal systems 3 Ss_50_60_90 Waste liquid fuel storage and treatment systems 3 Ss_50_60_95 Waste process liquid storage and treatment systems 3 Ss_50_70 Water waste (drainage) storage, treatment and disposal systems 2 Ss_50_70_05 Below-ground private drainage disposal systems 3 Ss_50_70_05_20 Below-ground waste water drainage field systems 4 Ss_50_70_05_22 Below-ground drainage packaged grease trap systems 4 Ss_50_70_05_23 Below-ground drainage private packaged septic tank systems 4 Ss_50_70_05_24 Below-ground drainage private packaged sewage treatment systems 4 Ss_50_70_05_25 Below-ground drainage private packaged storage tank systems 4 Ss_50_70_05_79 Below-ground drainage concrete soakaway systems 4 Ss_50_70_05_80 Below-ground drainage granular fill soakaway systems 4 Ss_50_70_05_81 Below-ground drainage modular plastics attenuation or storage tank systems 4 Ss_50_70_05_82 Below-ground drainage modular plastics soakaway systems 4 Ss_50_70_05_83 Below-ground drainage packaged oil and petrol interceptor systems 4 Ss_50_70_05_84 Below-ground drainage packaged silt trap systems 4 Ss_50_70_05_85 Below-ground drainage rigid attenuation or storage tank systems 4 Ss_50_70_05_86 Below-ground drainage wet well systems 4 Ss_50_70_05_95 Below-ground drainage outfall systems 4 Ss_50_70_24 Drainage disposal systems 3 Ss_50_70_24_80 Soakaway borehole systems 4 Ss_50_70_60 Private drainage treatment systems 3 Ss_50_70_60_70 Radioactive wastewater treatment systems 4 Ss_50_70_83 Surface water tank systems 3 Ss_50_70_85 Sustainable drainage systems (SuDS) 3 Ss_50_70_85_00 SuDS management train systems 4 Ss_50_70_85_06 Below ground surface water storage tank systems 4 Ss_50_70_85_08 Bioretention area systems 4 Ss_50_70_85_15 Conveyance swale systems 4 Ss_50_70_85_21 Detention basin systems 4 Ss_50_70_85_24 Dry swale systems 4 Ss_50_70_85_30 Filter strip systems 4 Ss_50_70_85_31 Filter drain systems 4 Ss_50_70_85_32 Filtration treatment and separation systems 4 Ss_50_70_85_33 Geocellular attenuation tank systems 4 Ss_50_70_85_34 Geocellular soakaway systems 4 Ss_50_70_85_35 Granular fill soakaway systems 4 Ss_50_70_85_41 Infiltration basin systems 4 Ss_50_70_85_42 Infiltration trench systems 4 Ss_50_70_85_58 Open channel conveyance systems 4 Ss_50_70_85_61 Pervious pavement systems 4 Ss_50_70_85_64 Pond systems 4 Ss_50_70_85_66 Precast concrete soakaway systems 4 Ss_50_70_85_70 Rainwater harvesting systems 4 Ss_50_70_85_75 Sand filter bed systems 4 Ss_50_70_85_76 Sand filter bed surface systems 4 Ss_50_70_85_85 Swale systems 4 Ss_50_70_85_96 Water butt systems 4 Ss_50_70_85_97 Wet swale systems 4 Ss_50_70_85_98 Wetland drainage systems 4 Ss_50_75 Wastewater storage, treatment and disposal systems 2 Ss_50_75_01 Aeration systems 3 Ss_50_75_01_22 Diffused aeration systems 4 Ss_50_75_01_44 Jet aeration systems 4 Ss_50_75_01_51 Mechanical aeration systems 4 Ss_50_75_01_90 Tray cascade aeration systems 4 Ss_50_75_20 Decanting systems 3 Ss_50_75_20_96 Wastewater decanting systems 4 Ss_50_75_21 Desludging and sludge handling systems 3 Ss_50_75_21_20 Desludging systems 4 Ss_50_75_21_75 Settlement tank gravity desludging systems 4 Ss_50_75_21_80 Sludge handling and treatment systems 4 Ss_50_75_34 Grit treatment and removal systems 3 Ss_50_75_34_16 Crossflow grit removal systems 4 Ss_50_75_34_60 Package grit treatment and removal systems 4 Ss_50_75_34_94 Vortex grit removal systems 4 Ss_50_75_41 Inlet works systems 3 Ss_50_75_41_15 Concrete inlet works systems 4 Ss_50_75_41_60 Package inlet works systems 4 Ss_50_75_41_66 Prefabricated inlet works systems 4 Ss_50_75_58 Odour control systems 3 Ss_50_75_58_07 Bio-filtration systems 4 Ss_50_75_58_08 Bio-scrubber systems 4 Ss_50_75_58_11 Catalytic iron filter systems 4 Ss_50_75_58_23 Dry installation systems 4 Ss_50_75_58_96 Wet scrubber systems 4 Ss_50_75_67 Primary sewage treatment and final settlement systems 3 Ss_50_75_67_38 Horizontal flow tank systems 4 Ss_50_75_67_46 Lamella tank systems 4 Ss_50_75_67_70 Radial flow tank systems 4 Ss_50_75_75 Scum removal systems 3 Ss_50_75_75_96 Wastewater scum removal systems 4 Ss_50_75_77 Secondary sewage treatment systems 3 Ss_50_75_77_01 Activated sludge aeration tank systems 4 Ss_50_75_77_07 Biological filter tank systems 4 Ss_50_75_92 Wastewater chemical dosing systems 3 Ss_50_75_92_13 Chemical dosing systems 4 Ss_50_75_93 Wastewater filtration systems 3 Ss_50_75_93_02 Aggregate filtration systems 4 Ss_50_75_93_07 Biological percolating filter tiling systems 4 Ss_50_75_93_52 Membrane filtration systems 4 Ss_50_75_94 Wastewater screenings handling systems 3 Ss_50_75_94_16 Combined screenings capture and handling systems 4 Ss_50_75_94_56 Non-powered screening systems 4 Ss_50_75_94_64 Powered screenings capture and handling systems 4 Ss_50_75_95 Wastewater supply systems 3 Ss_50_75_95_67 Pumped wastewater supply systems 4 Ss_50_75_98 Wastewater tank systems 3 Ss_50_75_98_96 Wastewater tank flushing systems 4 Ss_50_80 Solid waste storage, treatment and disposal systems 2 Ss_50_80_40 Incinerator systems 3 Ss_50_80_80 Solid waste compacting systems 3 Ss_50_80_80_96 Waste compactor systems 4 Ss_50_80_82 Solid waste sorting systems 3 Ss_50_80_96 Weighbridge systems 3 Ss_50_80_96_00 Above ground weighbridge systems 4 Ss_50_80_96_63 Pit weighbridge systems 4 Ss_50_95 Temporary disposal systems 2 Ss_55 Piped supply systems 1 Ss_55_05 Gas extraction, treatment and storage systems 2 Ss_55_05_30 Gas extraction systems 3 Ss_55_05_75 Gas storage tank systems 3 Ss_55_05_85 Gas treatment systems 3 Ss_55_05_95 Gas well systems 3 Ss_55_10 Liquid fuel extraction, treatment and storage systems 2 Ss_55_10_70 Liquid fuel extraction systems 3 Ss_55_10_75 Liquid fuel storage tank systems 3 Ss_55_10_85 Liquid fuel treatment systems 3 Ss_55_10_95 Liquid fuel well systems 3 Ss_55_15 Water extraction, treatment and storage systems 2 Ss_55_15_65 Potable water storage tank systems 3 Ss_55_15_65_15 Concrete potable water storage systems 4 Ss_55_15_65_65 Plastics potable water storage systems 4 Ss_55_15_65_72 Reinforced concrete potable water storage systems 4 Ss_55_15_65_84 Steel framed potable water storage systems 4 Ss_55_15_70 Water reservoir systems 3 Ss_55_15_72 Water extraction and monitoring systems 3 Ss_55_15_72_20 Water extraction borehole systems 4 Ss_55_15_72_50 Water monitoring borehole systems 4 Ss_55_15_85 Water treatment and purification systems 3 Ss_55_15_85_08 Biological aerated flooded filter systems 4 Ss_55_15_85_23 Dissolved air flotation systems 4 Ss_55_15_85_46 Lamella plate systems 4 Ss_55_15_85_75 Sandfilter systems 4 Ss_55_15_85_85 Submerged aerated filter systems 4 Ss_55_15_95 Wet well systems 3 Ss_55_15_95_64 Piled wet well systems 4 Ss_55_15_95_72 Reinforced concrete wet well systems 4 Ss_55_20 Gas distribution and supply systems 2 Ss_55_20_15 Compressed air supply systems 3 Ss_55_20_15_42 Industrial compressed air supply systems 4 Ss_55_20_15_46 Laboratory compressed air supply systems 4 Ss_55_20_15_51 Medical compressed air supply systems 4 Ss_55_20_33 Gas distribution network systems 3 Ss_55_20_33_56 Natural gas distribution network systems 4 Ss_55_20_34 Gas supply systems 3 Ss_55_20_34_05 Biogas supply systems 4 Ss_55_20_34_46 Liquefied petroleum gas (LPG) supply systems 4 Ss_55_20_34_57 Natural gas supply systems 4 Ss_55_20_34_95 Welding gas supply systems 4 Ss_55_20_40 Inert gas supply systems 3 Ss_55_20_45 Laboratory gas supply systems 3 Ss_55_20_45_05 Laboratory argon supply systems 4 Ss_55_20_45_36 Laboratory helium supply systems 4 Ss_55_20_45_39 Laboratory hydrogen supply systems 4 Ss_55_20_45_56 Laboratory nitrogen supply systems 4 Ss_55_20_45_59 Laboratory oxygen supply systems 4 Ss_55_20_51 Medical gas supply systems 3 Ss_55_20_51_03 Medical anaesthetic gas scavenging systems 4 Ss_55_20_51_27 Medical entonox supply systems 4 Ss_55_20_51_36 Medical helium/ oxygen mixture supply systems 4 Ss_55_20_51_56 Medical nitrous oxide supply systems 4 Ss_55_20_51_57 Medical nitrous oxide/ oxygen mixture supply systems 4 Ss_55_20_51_59 Medical oxygen supply systems 4 Ss_55_20_60 Process gas systems 3 Ss_55_20_60_33 Gas vaporizing systems 4 Ss_55_20_85 Specialist and high purity gas supply systems 3 Ss_55_20_94 Vacuum supply systems 3 Ss_55_20_94_51 Medical vacuum supply systems 4 Ss_55_30 Fire extinguishing systems 2 Ss_55_30_35 Gaseous and foam fire extinguishing systems 3 Ss_55_30_35_10 Carbon dioxide fire extinguishing systems 4 Ss_55_30_35_31 Foam fire extinguishing systems 4 Ss_55_30_35_35 Halocarbon gas total flooding fire extinguishing systems 4 Ss_55_30_35_40 Inert gas total flooding fire extinguishing systems 4 Ss_55_30_65 Portable fire extinguishing systems 3 Ss_55_30_65_30 Fire blanket systems 4 Ss_55_30_65_35 Fire bucket systems 4 Ss_55_30_65_65 Portable fire extinguisher systems 4 Ss_55_30_96 Water firefighting systems 3 Ss_55_30_96_24 Dry dropper systems 4 Ss_55_30_96_25 Dry riser systems 4 Ss_55_30_96_29 Fire hose reel systems 4 Ss_55_30_96_30 Fire hydrant systems 4 Ss_55_30_96_95 Water cannon firefighting systems 4 Ss_55_30_96_97 Wet riser systems 4 Ss_55_30_98 Water fire suppression systems 3 Ss_55_30_98_21 Deluge systems 4 Ss_55_30_98_23 Domestic sprinkler systems 4 Ss_55_30_98_70 Residential water mist systems 4 Ss_55_30_98_85 Sprinkler systems 4 Ss_55_30_98_96 Water mist systems 4 Ss_55_40 Steam distribution and supply systems 2 Ss_55_40_85 Steam supply and condensate systems 3 Ss_55_40_85_38 Hospital steam supply and condensate systems 4 Ss_55_40_85_41 Industrial steam supply and condensate systems 4 Ss_55_50 Liquid fuel distribution and supply systems 2 Ss_55_50_46 Liquid fuel distribution network systems 3 Ss_55_50_46_58 Oil distribution network systems 4 Ss_55_50_47 Liquid fuel supply systems 3 Ss_55_50_47_10 Biodiesel supply systems 4 Ss_55_50_47_12 Bioethanol supply systems 4 Ss_55_50_47_21 Diesel supply systems 4 Ss_55_50_47_32 Fuel oil supply systems 4 Ss_55_50_47_45 Kerosene/ jet fuel supply systems 4 Ss_55_50_47_46 Liquid biofuel supply systems 4 Ss_55_50_47_61 Petrol supply systems 4 Ss_55_60 Process liquid distribution and supply systems 2 Ss_55_60_45 Liquid acids and bases supply systems 3 Ss_55_60_47 Liquid chemicals supply systems 3 Ss_55_60_50 Liquid polymer supply systems 3 Ss_55_60_55 Lubrication supply systems 3 Ss_55_60_55_70 Rail lubrication supply systems 4 Ss_55_70 Water distribution and supply systems 2 Ss_55_70_38 Hot and cold water supply systems 3 Ss_55_70_38_15 Cold water supply systems 4 Ss_55_70_38_20 Direct hot water storage supply systems 4 Ss_55_70_38_40 Incoming water supply systems 4 Ss_55_70_38_42 Indirect hot water storage supply systems 4 Ss_55_70_38_45 Instantaneous hot water supply systems 4 Ss_55_70_38_65 Pumped cold water supply systems 4 Ss_55_70_39 Hydroelectric pressure water supply systems 3 Ss_55_70_39_10 Buried pressure pipeline systems 4 Ss_55_70_42 Irrigation systems 3 Ss_55_70_42_20 Drip irrigation systems 4 Ss_55_70_42_50 Manual irrigation systems 4 Ss_55_70_42_60 Passive irrigation systems 4 Ss_55_70_42_85 Sprinkler irrigation systems 4 Ss_55_70_42_87 Sub-irrigation systems 4 Ss_55_70_94 Washing systems 3 Ss_55_70_94_94 Wash plant systems 4 Ss_55_70_94_96 Wheel washing systems 4 Ss_55_70_95 Water distribution network systems 3 Ss_55_70_95_50 Mains water distribution network systems 4 Ss_55_70_95_66 Private water distribution network systems 4 Ss_55_70_96 Water feature systems 3 Ss_55_70_96_15 Cascade and waterfall systems 4 Ss_55_70_96_31 Fountain and jet systems 4 Ss_55_70_96_83 Self-contained water feature systems 4 Ss_55_70_96_96 Water play systems 4 Ss_55_70_97 Water reclamation systems 3 Ss_55_70_97_35 Grey water reclamation systems 4 Ss_55_70_97_70 Rainwater reclamation systems 4 Ss_55_70_98 Water treatment systems 3 Ss_55_70_98_08 Bore water treatment systems 4 Ss_55_70_98_85 Swimming pool water treatment systems 4 Ss_55_70_98_92 Ultrapure water treatment systems 4 Ss_55_70_99 Water management systems 3 Ss_55_70_99_84 Stoplog systems 4 Ss_55_90 Piped solids distribution and supply systems 2 Ss_55_90_65 Piped granule and powder supply systems 3 Ss_55_95 Temporary piped supply systems 2 Ss_60 Heating, cooling and refrigeration systems 1 Ss_60_30 Rail and paving heating systems 2 Ss_60_30_60 Pavement heating systems 3 Ss_60_30_60_27 Electric pavement heating systems 4 Ss_60_30_70 Railway heating systems 3 Ss_60_30_70_65 Points heating systems 4 Ss_60_30_75 Runway heating systems 3 Ss_60_30_90 Tramway heating systems 3 Ss_60_40 Space heating and cooling systems 2 Ss_60_40_13 Climatic ceiling and beam systems 3 Ss_60_40_13_13 Climatic beam systems 4 Ss_60_40_13_14 Climatic ceiling systems 4 Ss_60_40_15 Combined heating, cooling and power systems 3 Ss_60_40_15_40 Combined heat and power systems 4 Ss_60_40_15_90 Combined underfloor heating and cooling systems 4 Ss_60_40_17 Cooling systems 3 Ss_60_40_17_12 Chilled water systems 4 Ss_60_40_17_21 District cooling systems 4 Ss_60_40_17_71 Refrigerant cooling systems 4 Ss_60_40_17_92 Underfloor chilled water systems 4 Ss_60_40_17_94 Variable refrigerant flow systems 4 Ss_60_40_17_96 Water cooling systems 4 Ss_60_40_36 Heat pump systems 3 Ss_60_40_36_05 Air source heat pump systems 4 Ss_60_40_36_35 Ground source heat pump systems 4 Ss_60_40_36_96 Water source heat pump systems 4 Ss_60_40_37 Heating systems 3 Ss_60_40_37_21 Direct gas fired heating systems 4 Ss_60_40_37_22 District heating systems 4 Ss_60_40_37_26 Electric heating systems 4 Ss_60_40_37_27 Electric underfloor heating systems 4 Ss_60_40_37_28 Electrical resistance trace heating systems 4 Ss_60_40_37_48 Low temperature hot water heating systems 4 Ss_60_40_37_51 Medium temperature hot water heating systems 4 Ss_60_40_37_81 Solar heating systems 4 Ss_60_40_37_85 Steam heating systems 4 Ss_60_40_37_94 Underfloor low temperature hot water heating systems 4 Ss_60_40_84 Space heating and cooling distribution network systems 3 Ss_60_40_84_21 District cooling distribution network systems 4 Ss_60_40_84_22 District heating distribution network systems 4 Ss_60_60 Refrigeration systems 2 Ss_60_60_15 Cold room systems 3 Ss_60_60_15_10 Catering cold room systems 4 Ss_60_60_15_50 Mortuary cold room systems 4 Ss_60_60_17 Cold storage systems 3 Ss_60_60_70 Refrigerant systems 3 Ss_60_60_70_15 Refrigerant charging systems 4 Ss_60_60_70_70 Refrigerant recovery systems 4 Ss_60_80 Drying systems 2 Ss_60_80_08 Bottle and can drying systems 3 Ss_60_95 Temporary heating, cooling and refrigeration systems 2 Ss_65 Ventilation and air conditioning systems 1 Ss_65_40 Ventilation systems 2 Ss_65_40_25 Dust extract systems 3 Ss_65_40_32 Fume extract systems 3 Ss_65_40_32_32 Fume cupboard extract systems 4 Ss_65_40_32_70 Recirculatory fume cupboard systems 4 Ss_65_40_32_75 Safety cabinet extract systems 4 Ss_65_40_33 General space ventilation systems 3 Ss_65_40_33_45 Kitchen extract ventilation systems 4 Ss_65_40_33_48 Local extract ventilation systems 4 Ss_65_40_33_50 Mechanical extract ventilation systems 4 Ss_65_40_33_51 Mechanical supply ventilation systems 4 Ss_65_40_33_52 Mechanical and whole building ventilation systems 4 Ss_65_40_33_56 Natural ventilation systems 4 Ss_65_40_33_60 Passive stack ventilation systems 4 Ss_65_40_33_90 Toilet extract ventilation systems 4 Ss_65_40_42 Industrial fume extract systems 3 Ss_65_40_42_45 Local exhaust ventilation systems 4 Ss_65_40_42_95 Vehicle exhaust extract systems 4 Ss_65_40_55 Nuclear ventilation systems 3 Ss_65_40_55_22 Decontamination areas ventilation systems 4 Ss_65_40_80 Smoke extract and control systems 3 Ss_65_40_80_65 Pressure differential systems 4 Ss_65_40_80_80 Smoke and heat exhaust ventilation systems 4 Ss_65_40_94 Vehicular space ventilation systems 3 Ss_65_40_94_10 Car park extract systems 4 Ss_65_40_94_11 Car park supply systems 4 Ss_65_40_94_90 Tunnel ventilation systems 4 Ss_65_60 Specialist ventilation systems 2 Ss_65_60_95 Wind tunnel systems 3 Ss_65_80 Air conditioning systems 2 Ss_65_80_05 Central air conditioning systems 3 Ss_65_80_05_10 Centralized all-air conditioning systems 4 Ss_65_80_05_30 Fan coil unit air conditioning systems 4 Ss_65_80_05_40 Induction unit air conditioning systems 4 Ss_65_80_15 Controlled environment systems 3 Ss_65_80_45 Local air conditioning systems 3 Ss_65_80_45_25 Evaporative cooling systems 4 Ss_65_80_45_48 Local underfloor air conditioning systems 4 Ss_65_80_45_72 Room air conditioning systems 4 Ss_65_95 Temporary ventilation and air conditioning systems 2 Ss_70 Electrical systems 1 Ss_70_10 Electrical power generation and transmission systems 2 Ss_70_10_30 Fossil fuel power generation systems 3 Ss_70_10_30_33 Gas power generating systems 4 Ss_70_10_30_70 Reciprocating internal combustion engine 4 Ss_70_10_30_72 Reciprocating internal combustion engine driven alternating current generator systems 4 Ss_70_10_35 High voltage transmission systems 3 Ss_70_10_70 Renewable power generation systems 3 Ss_70_10_70_33 Geothermal power generation systems 4 Ss_70_10_70_35 Grid-connected photovoltaic systems 4 Ss_70_10_70_36 Hydroelectric power generation systems 4 Ss_70_10_70_80 Small-scale wave and tidal power generation systems 4 Ss_70_10_70_82 Small-scale wind power generation systems 4 Ss_70_10_70_85 Stand-alone photovoltaic systems 4 Ss_70_10_70_95 Water mill systems 4 Ss_70_10_70_97 Water turbine systems 4 Ss_70_10_70_98 Wind power generating systems 4 Ss_70_30 Electricity distribution systems 2 Ss_70_30_25 Protection systems 3 Ss_70_30_25_25 Earthing and bonding systems 4 Ss_70_30_35 High voltage systems 3 Ss_70_30_35_30 High voltage site connection systems 4 Ss_70_30_35_35 High voltage distribution systems 4 Ss_70_30_45 Low voltage systems 3 Ss_70_30_45_40 Low voltage site connection systems 4 Ss_70_30_45_45 Low voltage distribution systems 4 Ss_70_30_45_92 Uninterruptible power supply systems 4 Ss_70_30_60 Overhead line traction power distribution systems 3 Ss_70_30_60_11 Catenary overhead line systems 4 Ss_70_30_60_89 Trolley wire overhead line systems 4 Ss_70_30_80 Small power systems 3 Ss_70_30_80_35 Hard-wired voltage small power systems 4 Ss_70_30_80_45 Low voltage small power systems with prefabricated wiring 4 Ss_70_30_90 Conductor rail traction power distribution systems 3 Ss_70_30_90_15 Conductor rail electrification systems 4 Ss_70_30_90_90 Third rail electrification systems 4 Ss_70_30_94 Vehicle charging systems 3 Ss_70_30_94_27 Electric vehicle charging systems 4 Ss_70_80 Lighting systems 2 Ss_70_80_01 Aeronautical lighting systems 3 Ss_70_80_01_02 Approach lighting systems 4 Ss_70_80_01_03 Apron lighting systems 4 Ss_70_80_01_47 Lighting beacon systems 4 Ss_70_80_01_65 Precision approach path indicator systems 4 Ss_70_80_01_74 Runway lighting systems 4 Ss_70_80_01_87 Taxiway lighting systems 4 Ss_70_80_25 External lighting systems 3 Ss_70_80_25_05 Amenity lighting systems 4 Ss_70_80_25_70 Roadway lighting systems 4 Ss_70_80_25_90 Tunnel lighting systems 4 Ss_70_80_33 General space lighting systems 3 Ss_70_80_33_12 Central battery supplied emergency lighting systems 4 Ss_70_80_33_30 Fibre optic lighting systems 4 Ss_70_80_33_33 General lighting systems with prefabricated wiring 4 Ss_70_80_33_35 Hard-wired general lighting systems 4 Ss_70_80_33_88 Theatrical/ stage lighting systems 4 Ss_70_80_33_92 Underwater lighting systems 4 Ss_70_95 Temporary electrical systems 2 Ss_75 Communications, security, safety, control and protection systems 1 Ss_75_10 Communications systems 2 Ss_75_10_21 Data distribution and telecommunications systems 3 Ss_75_10_21_21 Data distribution systems 4 Ss_75_10_21_48 Local area network (LAN) systems 4 Ss_75_10_21_52 Mobile telecommunications systems 4 Ss_75_10_21_88 Telecommunications systems 4 Ss_75_10_21_97 Wide area network (WAN) systems 4 Ss_75_10_46 Listening systems 3 Ss_75_10_46_05 Audio-frequency induction-loop systems 4 Ss_75_10_46_42 Infrared listening systems 4 Ss_75_10_68 Public communications systems 3 Ss_75_10_68_02 Advertising display systems 4 Ss_75_10_68_07 Bell communication systems 4 Ss_75_10_68_13 Clock systems 4 Ss_75_10_68_42 Information display systems 4 Ss_75_10_68_68 Public address systems 4 Ss_75_10_68_69 Queue management systems 4 Ss_75_10_70 Radio and television distribution systems 3 Ss_75_10_70_70 Radio distribution systems 4 Ss_75_10_70_88 Television distribution systems 4 Ss_75_10_72 Emergency communication systems 3 Ss_75_10_72_30 Firefighting intercom systems 4 Ss_75_10_72_70 Radio communications systems 4 Ss_75_10_72_72 Roadway emergency communication systems 4 Ss_75_10_88 Timing and scoring systems 3 Ss_75_10_88_05 Athletics timing and scoring systems 4 Ss_75_10_88_86 Swimming pool timing and scoring systems 4 Ss_75_30 Signal systems 2 Ss_75_30_35 Highway signal and control systems 3 Ss_75_30_35_52 Motorway signal and control systems 4 Ss_75_30_35_72 Road signal and control systems 4 Ss_75_30_50 Marine signal systems 3 Ss_75_30_60 Obstacle beacon systems 3 Ss_75_30_70 Railway signal and control systems 3 Ss_75_30_70_02 Automatic train operation (ATO) systems 4 Ss_75_30_70_03 Automatic train protection (ATP) systems 4 Ss_75_30_70_05 Automatic warning systems (AWS) 4 Ss_75_30_70_15 Communications based train control (CBTC) systems 4 Ss_75_30_70_27 Emergency traction current discharge systems (ETCDS) 4 Ss_75_30_70_30 Fixed block signalling systems 4 Ss_75_30_70_53 Moving block signalling systems 4 Ss_75_30_70_70 Rail signal systems 4 Ss_75_30_70_90 Train protection warning systems (TPWS) 4 Ss_75_30_90 Tramway signal systems 3 Ss_75_30_97 Waterway signal systems 3 Ss_75_30_98 Wind direction indication systems 3 Ss_75_30_98_96 Windsock systems 4 Ss_75_40 Security systems 2 Ss_75_40_02 Access control systems 3 Ss_75_40_02_05 Audio intercom systems 4 Ss_75_40_02_11 Card access control systems 4 Ss_75_40_02_94 Video intercom systems 4 Ss_75_40_53 Monitoring systems 3 Ss_75_40_53_86 Surveillance CCTV systems 4 Ss_75_40_53_90 Train dispatch CCTV systems 4 Ss_75_40_53_95 Voice recording systems 4 Ss_75_40_73 Security screening systems 3 Ss_75_40_73_11 Cabin baggage screening systems 4 Ss_75_40_73_60 Passenger screening systems 4 Ss_75_40_75 Security detection alarm systems 3 Ss_75_40_75_02 Aerospace security detection and warning systems 4 Ss_75_40_75_40 Intruder detection and alarm systems 4 Ss_75_40_75_50 Marine and waterway security detection and warning systems 4 Ss_75_50 Safety and protection systems 2 Ss_75_50_11 Call and alarm systems 3 Ss_75_50_11_05 Assistance call systems 4 Ss_75_50_11_27 Emergency voice communication systems 4 Ss_75_50_11_57 Nurse call systems 4 Ss_75_50_11_95 Voice alarm systems 4 Ss_75_50_15 Cathodic protection systems 3 Ss_75_50_15_02 Adhesive backed zinc sheet anode systems 4 Ss_75_50_15_09 Buried galvanic anode systems 4 Ss_75_50_15_10 Buried impressed current anode systems 4 Ss_75_50_15_27 Embedded impressed current anode systems 4 Ss_75_50_15_28 Embedded zinc anode systems 4 Ss_75_50_15_41 Immersed galvanic anode systems 4 Ss_75_50_15_42 Immersed impressed current anode systems 4 Ss_75_50_15_72 Recess mounted impressed current anode systems 4 Ss_75_50_15_85 Surface mounted impressed current anode systems 4 Ss_75_50_15_99 Zinc mesh in overlay systems 4 Ss_75_50_26 Debris detection systems 3 Ss_75_50_26_30 Foreign object debris (FOD) detection systems 4 Ss_75_50_28 Detection and alarm systems 3 Ss_75_50_28_05 Aspirating detection systems 4 Ss_75_50_28_22 Domestic premises fire detection and alarm systems 4 Ss_75_50_28_24 Duct smoke detector systems 4 Ss_75_50_28_29 Fire detection and alarm systems 4 Ss_75_50_28_30 Fixed gas detection and alarm systems 4 Ss_75_50_28_32 Flow sample gas detection and alarm systems 4 Ss_75_50_28_71 Refrigerant leak detection and alarm systems 4 Ss_75_50_28_96 Water leak detection and alarm systems 4 Ss_75_50_28_97 Water presence detection and alarm systems 4 Ss_75_50_35 Healthcare imaging systems 3 Ss_75_50_45 Electrical protection systems 3 Ss_75_50_45_45 Lightning protection systems 4 Ss_75_50_60 Patient monitoring and telemetry systems 3 Ss_75_60 Environmental safety systems 2 Ss_75_60_25 Earthquake warning systems 3 Ss_75_60_30 Flood warning systems 3 Ss_75_60_50 Meteorological detection and warning systems 3 Ss_75_60_52 Meteorological instrumentation systems 3 Ss_75_60_52_95 Weather observation systems 4 Ss_75_60_70 Radiation detection and alarm systems 3 Ss_75_60_75 Seismic instrumentation systems 3 Ss_75_60_90 Tsunami warning systems 3 Ss_75_60_95 Volcanic eruption warning systems 3 Ss_75_70 Control and management systems 2 Ss_75_70_05 Airport control systems 3 Ss_75_70_05_04 Automatic aircraft docking systems 4 Ss_75_70_10 Bridge control systems 3 Ss_75_70_20 Dam control systems 3 Ss_75_70_35 Highway control systems 3 Ss_75_70_50 Marine control systems 3 Ss_75_70_52 Mechanical engineering services control and management systems 3 Ss_75_70_52_03 Air to air heat pump control systems 4 Ss_75_70_52_14 Climatic ceiling panels and beams control systems 4 Ss_75_70_52_15 Combined heat and power control systems 4 Ss_75_70_52_16 Constant volume air conditioning control systems 4 Ss_75_70_52_17 Cooling system control systems 4 Ss_75_70_52_23 Domestic heating system control systems 4 Ss_75_70_52_28 Extract ventilation control systems 4 Ss_75_70_52_29 Fan coil unit air conditioning control systems 4 Ss_75_70_52_32 Fuel supply control systems 4 Ss_75_70_52_33 Gas fired heating control systems 4 Ss_75_70_52_36 Heating system control systems 4 Ss_75_70_52_38 Heat pump control systems 4 Ss_75_70_52_52 Mixed mode ventilation control systems 4 Ss_75_70_52_56 Natural ventilation control systems 4 Ss_75_70_52_70 Radiant heating control systems 4 Ss_75_70_52_80 Smoke and heat detection extract control systems 4 Ss_75_70_52_81 Smoke and heat detection shut down control systems 4 Ss_75_70_52_85 Steam and condensate control systems 4 Ss_75_70_52_93 Variable volume air conditioning control systems 4 Ss_75_70_52_94 Ventilation control systems 4 Ss_75_70_52_96 Water supply control systems 4 Ss_75_70_52_97 Water to air heat pump control systems 4 Ss_75_70_54 Metering, monitoring and management systems 3 Ss_75_70_54_03 Active water monitoring systems 4 Ss_75_70_54_10 Building monitoring and management systems 4 Ss_75_70_54_15 Communications monitoring and management systems 4 Ss_75_70_54_25 Electricity metering systems 4 Ss_75_70_54_30 Fuel metering systems 4 Ss_75_70_54_60 Passive water monitoring systems 4 Ss_75_70_54_95 Water metering systems 4 Ss_75_70_72 Road control systems 3 Ss_75_70_85 Structural monitoring systems 3 Ss_75_70_85_18 Crack gauge monitoring systems 4 Ss_75_70_85_27 Electrolevel monitoring systems 4 Ss_75_70_85_30 Fibre optic monitoring systems 4 Ss_75_70_85_47 Liquid levelling monitoring systems 4 Ss_75_70_85_48 Load cell monitoring systems 4 Ss_75_70_85_62 Piezometer monitoring systems 4 Ss_75_70_85_66 Precise levelling monitoring systems 4 Ss_75_70_85_67 Prism monitoring systems 4 Ss_75_70_85_84 Strain gauge monitoring systems 4 Ss_75_70_85_86 Sub-surface monitoring array systems 4 Ss_75_70_85_87 Tape extensometer monitoring systems 4 Ss_75_70_85_90 Tilt sensor monitoring systems 4 Ss_75_70_85_92 Total station monitoring systems 4 Ss_75_70_90 Traffic monitoring systems 3 Ss_75_70_90_90 Traffic enforcement camera systems 4 Ss_75_70_96 Water supply and wastewater control systems 3 Ss_75_70_96_21 Desludging control systems 4 Ss_75_70_96_30 Flow measurement and control systems 4 Ss_75_70_96_96 Wastewater supply control systems 4 Ss_75_70_96_98 Water supply quality control systems 4 Ss_75_70_97 Waterway control systems 3 Ss_75_90 Ticket management systems 2 Ss_75_90_80 Ticketing systems 3 Ss_75_90_93 Ticket validation systems 3 Ss_75_90_93_11 Card reading systems 4 Ss_75_90_93_60 Passenger check-in systems 4 Ss_75_90_93_88 Ticket reading systems 4 Ss_75_95 Temporary communications, security, safety, control and protection systems 2 Ss_80 Transport systems 1 Ss_80_10 Cable transport systems 2 Ss_80_10_05 Aerial tram systems 3 Ss_80_10_10 Cable car systems 3 Ss_80_10_15 Chairlift systems 3 Ss_80_10_30 Funicular systems 3 Ss_80_10_35 Gondola systems 3 Ss_80_10_70 Ropeway tow systems 3 Ss_80_10_85 Surface lift systems 3 Ss_80_20 Conveying systems 2 Ss_80_20_05 Automatic guided vehicle systems 3 Ss_80_20_06 Baggage handling systems 3 Ss_80_20_06_04 Airport baggage handling systems 4 Ss_80_20_10 Bulk material conveying systems 3 Ss_80_20_11 Cargo handling systems 3 Ss_80_20_23 Document conveying systems 3 Ss_80_20_23_65 Pneumatic document conveying systems 4 Ss_80_20_60 Parcel sorting systems 3 Ss_80_20_62 People conveying systems 3 Ss_80_20_62_28 Escalator systems 4 Ss_80_20_62_53 Moving walkway systems 4 Ss_80_20_63 Piece conveying systems 3 Ss_80_20_63_59 Overhead piece conveying systems 4 Ss_80_20_65 Pneumatic conveying systems 3 Ss_80_30 Crane and hoist systems 2 Ss_80_30_15 Crane systems 3 Ss_80_30_15_10 Bulk handling crane systems 4 Ss_80_30_15_15 Container handling crane systems 4 Ss_80_30_15_59 Overhead crane systems 4 Ss_80_30_20 Derrick systems 3 Ss_80_30_25 Dynamic permanent access and safety equipment systems 3 Ss_80_30_25_30 Fixed rig suspended access systems 4 Ss_80_30_25_32 Gantry access systems 4 Ss_80_30_25_35 Guided type fall arrest systems 4 Ss_80_30_25_50 Mobile rig monorail suspended access systems 4 Ss_80_30_25_52 Mobile rig tracked suspended access systems 4 Ss_80_30_25_55 Mobile rig trackless suspended access systems 4 Ss_80_30_25_75 Robotic cleaning systems 4 Ss_80_30_25_80 Single point anchorage fall arrest systems 4 Ss_80_30_25_90 Travelling ladder access systems 4 Ss_80_30_40 Hoist systems 3 Ss_80_50 Lift systems 2 Ss_80_50_60 Passenger and goods lift systems 3 Ss_80_50_60_26 Electric lift systems 4 Ss_80_50_60_39 Hydraulic lift systems 4 Ss_80_50_60_50 Manual dumbwaiter systems 4 Ss_80_50_60_60 Paternoster systems 4 Ss_80_50_60_65 Powered homelift systems 4 Ss_80_50_60_83 Stairlift systems 4 Ss_80_50_60_85 Step lift systems 4 Ss_80_50_60_94 Vertical platform lift systems 4 Ss_80_50_94 Vehicle and boat stacking systems 3 Ss_80_50_96 Warehouse stacking systems 3 Ss_80_70 Track systems 2 Ss_80_70_46 Level crossing systems 3 Ss_80_70_46_60 Pedestrian level crossing systems 4 Ss_80_70_46_93 User worked level crossing systems 4 Ss_80_70_46_95 Vehicular level crossing systems 4 Ss_80_70_50 Monorail systems 3 Ss_80_70_70 Rail track systems 3 Ss_80_70_70_06 Ballasted rail track systems 4 Ss_80_70_70_27 Embedded rail systems 4 Ss_80_70_70_56 Non-embedded slab track rail systems 4 Ss_80_70_70_65 Precast track bed systems 4 Ss_80_70_89 Train arrestor systems 3 Ss_80_70_89_30 Fixed train arrestor systems 4 Ss_80_70_89_50 Moveable train arrestor systems 4 Ss_80_80 Turntable systems 2 Ss_80_80_20 Display turntable systems 3 Ss_80_80_30 Floor turntable systems 3 Ss_80_80_40 Industrial turntable systems 3 Ss_80_80_70 Railway turntable systems 3 Ss_80_80_85 Stage turntable systems 3 Ss_80_90 Vehicle access systems 2 Ss_80_90_05 Aircraft passenger loading bridge systems 3 Ss_80_90_05_60 Passenger loading bridge systems 4 Ss_80_90_70 Rocket passenger access systems 3 Ss_80_90_75 Ship passenger loading bridge systems 3 Ss_80_95 Temporary transport systems 2 Ss_85 Process engineering systems 1 Ss_85_72 Robotic systems 2 Ss_85_95 Temporary process engineering systems 2 Ss_90 Soft facility management systems 1 Ss_90_05 Demand for space 2 Ss_90_06 Demand for technical infrastructure 2 Ss_90_07 Demand for cleaning 2 Ss_90_08 Demand related to outdoor space 2 Ss_90_09 Workplace 2 Ss_90_10 Specific demand related to space and infrastructure 2 Ss_90_11 Demand for health, safety and security 2 Ss_90_12 Hospitality demands 2 Ss_90_13 Demand for information and communication 2 Ss_90_14 Demand for logistics 2 Ss_90_15 Demand for integrated management, consultancy and administration 2 Ss_90_20 Specific demand of administrative, commercial and protective services 2 Ss_90_25 Specific demand of cultural, educational, scientific and information organizations 2 Ss_90_30 Specific demand of industrial organizations 2 Ss_90_35 Specific demand of medical, health, welfare and sanitary organizations 2 Ss_90_40 Specific demand of recreational organizations 2 Ss_90_45 Specific demand of residential organizations 2 Ss_90_50 Specific demand of disposal organizations 2 Ss_90_55 Specific demand of piped supply organizations 2 Ss_90_60 Specific demand of heating, cooling and refrigeration organizations 2 Ss_90_65 Specific demand of ventilation and air conditioning organizations 2 Ss_90_70 Specific demand of electrical organizations 2 Ss_90_75 Specific demand of communications, security, safety and protection organisations 2 Ss_90_80 Specific demand of rail organizations 2 Ss_90_81 Specific demand of road organizations 2 Ss_90_82 Specific demand of marine and waterway organizations 2 Ss_90_83 Specific demand of cable transport organizations 2 Ss_90_84 Specific demand of aerospace organizations 2