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Navigation Specification: About • Products • Accessories • Systems • Work Sections • Collaborate: Robust Specification: Clauses • Work Sections

About:

This list is based on 1987 Committee for Coordinated Project Information (CCPI)’s Common Arrangement of Work Sections (CAWS) however over decades of project specification writing BrianSpecMan found their list insufficient in some areas.

Some methods of construction warrant separating out of work sections e.g. Z11 and G20 needs subdivision:

The following list of work section reflects the total list from GBE, GBS, ASWS, NGS and BrianSpecMan‘s >40 years of specification writing practice and £2420m project value track record.

In addition specifications are also available on a GBE Page or in the GBE Shop are listed below.

In addition many more specifications are written but not added or linked here

Contact NGS GBS if you would be interested is seeing them

Each work section one could consider adding an appendix for:

Manufacturers & Suppliers
Installers & Applicators
Service providers

Lists of specification sections adding to CAWS:

Preliminaries:

A38 Waste management
- NGS Specification exists
A39 Packaging waste management
- NGS Specification exists
A90 Performance Specification
- NGS Specification exists
- A90 Performance Specification
A94 Airtightness testing
- Draft NGS Specification exists
A95 Infrared Thermographic surveys
- NGS Specification exists
- A95 Infrared Thermographic surveys G#512 N#530

Work Sections: Existing Buildings

C20 Demolition waste minimisation
- NGS Specification exists
C91 Alteration waste management
- NGS Specification exists

Work Sections: New Build

D20 excavation waste management
- NGS Specification exists
G21 Load-bearing timber blockwork
- Draft NGS Specification exists
G22 Cross Laminated timber panel system
- Project Specifications exist
G23 Post and Beam frame
G24 Glued Laminated timber frames
G25 LTF Light Timber Frame
G26 SIPS Structural Insulated Panel Systems
- G26 SipFit (RSW)
- A Product Specification exists
  - SIPFIT SIPS
G27 ISPS insulated structural panel system
G28 Dowelled/Nailed stacked wood panel systems
K43 Raised Storage/Access Decking Systems
- Product Specification exists
- K43 120A StoreFloor (RSW) G#14031
- K43 120A StoreFloor
M21 External Insulated Render
- Product Specification Exists
- M21 Insulation with Render Finish
P10 Sundry insulation/proofing/fire stops
P11 Foamed/Fibre/Bead cavity wall insulation
P12 Fire Stopping Systems
P13 Acoustic Insulation/Proofing systems
P14 Wind Air Tightness Systems
- Product Specification exists
- P14 Wind Air Tightness Systems
P15 Hemp-lime sprayed Insulation
- Draft Specification exists
P16 Hemp-lime insitu insulation
- Draft Specification exists

MEP Services

W21 Projection Paint
- Product Specifications Exist
- W21 Projection Paint (RSWS)

Reference Work Sections

Z11.0 metalwork generally
- NGS Specification exists
Z11.1 mild steel
- NGS Specification exists
Z11.2 aluminium
- NGS Specification exists
Z11.3 Austenitic stainless steel
- NGS Specification exists
Z11.4 Copper/Copper Alloy
- NGS Specification exists
Z31 Powder Coating
- A Product Specification exists
- Syntha Pulvin Plus Specification Guide G#1341 N#1327
Z34 Hot Dip Galvanizing

Each preliminaries or work section can have a series of supporting files:

General Guidance Notes
Clause Guidance Notes
Reference Documents
Authoritative bodies with links to websites or documents

Each work section can have additional appendix for:

Manufacturers & Suppliers
Installers & Applicators
Service providers

© CCPI 1987 & 1998 (CAWS)
© NBS 1987 – 2013
© GBE GBC GBL NGS ASWS Brian Murphy aka BrianSpecMan **
1987 – 5th January 2013 – 12th June 2026

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