Common arrangement of work sections classification
The Common Arrangement of Work Sections (CAWS), provides a consistent arrangement for specifications and bills of quantities. For more information see Common Arrangement of Work Sections.
The Common Arrangement of Work Sections sub-classification is listed below:
B: Complete buildings / structures / units
| B11 | Prefabricated building units |
| B12 | Conservatories |
| B13 | Modular buildings |
| B14 | Prefabricated panelled constructions |
| B15 | Prefabricated framed constructions |
| B50 | General structural requirements |
| B91 | Buildings in the landscape |
C: Demolition / alteration / renovation
| C10 | Site survey |
| C11 | Site investigation |
| C20 | Demolition |
| C30 | Shoring / facade retention |
| C40 | Cleaning masonry / cleaning concrete |
| C41 | Repairing / renovating / conserving masonry |
| C42 | Repairing / renovating / conserving concrete |
| C45 | Damp proof course renewal / insertion |
| C46 | Cavity wall tie renewal / insertion |
| C51 | Repairing / renovating / conserving timber |
| C52 | Fungus / beetle eradication |
| C90 | Alterations – spot items |
D: Groundwork
| D20 | Excavating and filling |
| D21 | Ground gas collection and venting systems |
| D30 | Piling |
| D40 | Embedded retaining walls |
| D41 | Crib walls, gabions and other gravity retaining walls |
| D45 | Soil nailing |
| D50 | Underpinning |
E: In situ concrete / large precast concrete
| E05 | In situ concrete construction generally |
| E10 | Mixing / casting / curing in situ concrete |
| E11 | Sprayed in situ concrete |
| E20 | Formwork for in situ concrete |
| E30 | Reinforcement for in situ concrete |
| E40 | Designed joints in in situ concrete |
| E41 | Worked finishes to in situ concrete |
| E42 | Accessories cast into in situ concrete |
| E60 | Precast / composite concrete floors / roof decks |
F: Masonry
| F10 | Brick / block walling |
| F11 | Glass block walling |
| F20 | Natural stone rubble walling |
| F21 | Natural stone / ashlar walling / dressings |
| F22 | Cast stone ashlar walling / dressings |
| F30 | Accessories / sundry items for brick / block / stone walling |
| F31 | Precast concrete sills / lintels / copings / features |
| F42 | Straw bale walling systems |
G: Structural / carcassing metal / timber
| G10 | Structural steel framing |
| G11 | Structural aluminium framing |
| G12 | Isolated structural metal members |
| G13 | LSF Light Steel Frame |
| G20 | Carpentry/Timber framing/First fixing |
| G21 | Load-bearing timber blockwork |
| G22 | CLTP Cross Laminated timber panel systems |
| G23 | Post and Beam frames |
| G24 | Laminated timber frames |
| G25 | LTF Light Timber Frames |
| G26 | SIPS Structural Insulated Panel Systems |
| G27 | ISPS insulated structural panel systems |
| G28 | Dowelled/Nailed stacked wood panel systems |
| G3 | Metal/ Timber decking |
| G30 | Metal profiled sheet decking |
| G31 | Prefabricated timber unit decking |
| G32 | Edge supported/Reinforced woodwool slab decking |
H: Cladding / covering
| J10 | Cementitious mortar tanking / damp proofing |
| J20 | Mastic asphalt tanking / damp proofing |
| J21 | Mastic asphalt roofing / insulation / finishes |
| J30 | Liquid applied tanking / damp proofing |
| J31 | Liquid applied waterproof roof coatings |
| J40 | Flexible sheet waterproofing / damp proofing |
| J41 | Reinforced bitumen membrane roof coverings |
| J42 | Single layer polymeric sheet roof coverings |
| J44 | Sheet linings for pools / lakes / waterways |
K: Linings / sheathing / dry partitioning
| K10 | Plasterboard dry linings / partitions / ceilings |
| K11 | Rigid sheet flooring / sheathing / decking / sarking / linings / casings |
| K12 | Under perlin / Inside rail panel linings |
| K13 | Rigid sheet fine linings and panelling |
| K20 | Timber board flooring / sarking / linings / casings |
| K21 | Wood strip /board fine flooring / linings |
| K30 | Panel partitions |
| K32 | Panel cubicles / duct and wall linings / screens |
| K40 | Demountable suspended ceilings |
| K41 | Raised access floors |
| K45 | Suspended ceiling system alterations |
| K46 | Raised floor system alterations |
| L10 | Windows / rooflights / screens / louvres |
| L20 | Doors / shutters / hatches |
| L30 | Stairs / ladders / walkways / handrails / balustrades |
| L35 | Fixed utilitarian access systems |
| L40 | General glazing |
| M10 | Cement based levelling / wearing screeds |
| M11 | Mastic asphalt flooring / floor underlays |
| M12 | Resin flooring |
| M13 | Calcium sulfate based levelling screeds |
| M20 | Plastered / rendered / roughcast coatings |
| M21 | Insulation with rendered finish |
| M22 | Sprayed monolithic coatings |
| M30 | Metal lathing / anchored mesh reinforcement for plastered / rendered coatings |
| M40 | Stone / concrete / quarry / ceramic tiling / mosaic |
| M41 | Terrazzo tiling / In situ terrazzo |
| M42 | Wood block / composition block / mosaic parquet flooring |
| M50 | Rubber / plastics / cork / lino / carpet tiling / sheeting |
| M51 | Edge fixed carpeting |
| M52 | Decorative papers / fabrics |
| M60 | Painting / clear finishing |
| M61 | Intumescent coatings for fire protection of steelwork |
| N10 | General fixtures / furnishings / equipment |
| N11 | Domestic kitchen fittings, furnishings and equipment |
| N12 | Commercial catering fittings, furnishings and equipment |
| N13 | Sanitary appliances and fittings |
| N14 | General internal signage systems |
| N15 | Internal fire and safety signage systems |
| N16 | Bird and vermin control systems |
| N17 | Portable fire fighting systems |
| N25 | Permanent access and safety equipment |
| N91 | External signage and interpretation |
| P10 | Sundry insulation / proofing work |
| P11 | Foamed / fibre / bead cavity wall insulation |
| P12 | Fire stopping systems |
| P20 | Unframed isolated trims / skirtings / sundry items |
| P21 | Door / window ironmongery |
| P30 | Trenches, pipeways and pits for buried engineering services |
| P31 | Holes, chases, covers and supports for services |
Q: Paving / planting / fencing / site furniture
| Q10 | Kerbs / edgings / channels / paving accessories |
| Q20 | Granular sub-bases to roads / pavings |
| Q21 | In situ concrete roads / pavings / bases |
| Q22 | Asphalt roads / pavings |
| Q23 | Gravel / hoggin / woodchip / resin bound roads / pavings / overlays |
| Q24 | Interlocking brick / block roads / pavings |
| Q25 | Slab / brick / sett / cobble pavings |
| Q26 | Special surfacings / pavings for sport / general amenity |
| Q28 | Topsoil and soil ameliorants |
| Q30 | Seeding / turfing |
| Q31 | External planting |
| Q32 | Internal and artificial planting |
| Q35 | Landscape maintenance |
| Q37 | Green roofs |
| Q40 | Fencing |
| Q41 | Barriers / guardrails |
| Q50 | Site / street furniture / equipment |
| Q52 | Play and sports equipment |
| Q55 | External decks, boardwalks and bridges |
| R10 | Rainwater drainage systems |
| R11 | Above ground foul drainage systems |
| R12 | Below ground drainage systems |
| R13 | Land drainage |
| R16 | Groundwater pressure relief drainage |
| R17 | Soakaway, septic tank and sewage treatment units |
| R18 | Pumping stations and pressure pipelines |
| S14 | Irrigation |
| S15 | Fountains / water features |
| S17 | Water reclamation systems |
| S90 | Hot and cold water supply systems - domestic |
| S91 | Natural gas supply systems - domestic |
| S92 | Sprinkler systems - domestic |
T: Mechanical heating / cooling / refrigeration systems
| T90 | Heating systems - domestic |
U: Ventilation / air conditioning systems
| U90 | General ventilation - domestic |
V: Electrical supply / power / lighting systems
| V90 | Electrical systems - domestic |
| V91 | Electrical systems - landscape |
W: Communications / security / control systems
| W53 | Assistance call systems |
| W90 | Communications and security systems - domestic |
| X12 | Vertical platform lift systems |
| X13 | Inclined stairlift systems |
Z: Building fabric reference specification
| Z10 | Purpose made joinery |
| Z11 | Purpose made metalwork |
| Z12 | Preservative / fire retardant treatment |
| Z20 | Fixings and adhesives |
| Z21 | Mortars |
| Z22 | Sealants |
| Z31 | Powder coatings |
| Z33 | Anodizing |
[edit] Related articles on Designing Buildings Wiki
- Bills of quantities.
- BIM classification.
- Classification systems.
- Common arrangement of work sections.
- Comparison of SMM7 with NRM2.
- Construction Project Information Committee.
- Elemental cost plan.
- How to take off construction works.
- New Rules of Measurement.
- Preliminaries.
- Production information.
- Specifications.
- Standard Method of Measurement (SMM7).
- Uniclass.
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