- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 17 May 2018
Common arrangement of work sections classification
The Common Arrangement of Work Sections sub-classification is listed below:
|B11||Prefabricated building units|
|B14||Prefabricated panelled constructions|
|B15||Prefabricated framed constructions|
|B50||General structural requirements|
|B91||Buildings in the landscape|
|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|
|D20||Excavating and filling|
|D21||Ground gas collection and venting systems|
|D40||Embedded retaining walls|
|D41||Crib walls, gabions and other gravity retaining walls|
|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|
|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|
|G10||Structural steel framing|
|G12||Isolated structural metal members|
|G20||Carpentry / timber framing / first fixing|
|G30||Metal profiled sheet 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|
|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|
M: Surface finishes
|M10||Cement based levelling / wearing screeds|
|M11||Mastic asphalt flooring / floor underlays|
|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|
|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|
|Q32||Internal and artificial planting|
|Q41||Barriers / guardrails|
|Q50||Site / street furniture / equipment|
|Q52||Play and sports equipment|
|Q55||External decks, boardwalks and bridges|
R: Disposal systems
|R10||Rainwater drainage systems|
|R11||Above ground foul drainage systems|
|R12||Below ground drainage systems|
|R16||Groundwater pressure relief drainage|
|R17||Soakaway, septic tank and sewage treatment units|
|R18||Pumping stations and pressure pipelines|
S: Piped supply systems
|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|
|T90||Heating systems - domestic|
|U90||General ventilation - domestic|
|V90||Electrical systems - domestic|
|V91||Electrical systems - landscape|
W: Communications / security / control systems
|W53||Assistance call systems|
|W90||Communications and security systems - domestic|
X: Transport systems
|X12||Vertical platform lift systems|
|X13||Inclined stairlift systems|
|Z10||Purpose made joinery|
|Z11||Purpose made metalwork|
|Z12||Preservative / fire retardant treatment|
|Z20||Fixings and adhesives|
 Find out more
 Related articles on Designing Buildings Wiki
- Bills of quantities.
- BIM classification.
- 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.
- Production information.
- Standard Method of Measurement (SMM7).
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