- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 19 Feb 2020
Common arrangement of work sections classification
|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|
|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|
|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|
|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|
|W53||Assistance call systems|
|W90||Communications and security systems - domestic|
|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|
 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.
- Production information.
- Standard Method of Measurement (SMM7).
Featured articles and news
Eight forms of resource optimisation.
CIOB responds to Chancellor Sunak's announcement on jobs and the economy.
Revised guide to competition rules available.
Brick slip soffit systems and intricate brick features.
An innovative engineering approach could have had tragic consequence for NYC.
Some secrets behind how canals work.
Breaking down possible steps of pre-contract management.
ICE event includes comments from Welsh Government Minister Julie James.
How to write them and what they should include.
Designing Buildings Wiki becomes the world's first website to adopt the new knowledge standard.
Assessing the most beneficial design elements.
Exploring different types of vinyl flooring.