Preliminaries/general conditions within NBS Scheduler

Contract Preliminaries / General Conditions

  The project generally
  JCT 2016 Intermediate Building Contract
  JCT 2016 Intermediate Building Contract with Contractor's Design
  JCT 2016 Minor Works Building Contract
  JCT 2016 Minor Works Building Contract with Contractor's Design
  JCT Sub-contract (IFC) and NAM/T
  JCT 2016 Measured Term Contract
  SBCC 2016 Minor Works Building Contract
  SBCC 2016 Minor Works Building Contract with Contractor's Design
  SBCC Measured Term Contract
  NEC3 Engineering and Construction (ECC) Short Contract
  NEC4 Engineering and Construction (ECC) Short Contract
  Infrastructure Conditions of Contract (ICC) Minor Works Version
  Irish Short Public Works Contract for Civil Engineering and Building Works Designed by the Employer
  RIBA Concise Building Contract 2014
  SBCC Framework Agreement

Work Sections

Complete buildings/ structures/ units

B12 Conservatories
B15 Prefabricated framed structures

Demolition/ Alteration/ Renovation

C20 Demolition
C40 Cleaning masonry and concrete
C45 Damp proof course renewal and insertion
C46 Wall tie renewal and insertion
C52 Fungus and beetle eradication


D20 Excavating and filling
D50 Underpinning

In situ concrete/ Large precast concrete

E10 In situ concrete
E20 Formwork for in situ concrete
E30 Reinforcement for in situ concrete
E60 Precast concrete floors and roof decks


F10 Brick and block walling
F11 Glass block walling
F20 Natural stone rubble walling
F21 Natural stone ashlar walling and dressings
F22 Cast stone ashlar walling and dressings
F30 Accessories and sundry items for brick, block and stone walling
F31 Purpose made precast concrete sills, lintels, copings and features
F42 Straw bale walling systems

Structural/ Carcassing metal/ timber

G10 Structural steel framing
G12 Isolated structural metal members
G20 Carpentry and timber framing
G30 Metal profiled sheet decking

Cladding/ Covering

H10 Patent glazing
H20 Rigid sheet cladding
H21 Timber weatherboarding
H22 Plastics weatherboarding
H30 Fibre cement profiled sheet cladding and covering
H31 Metal profiled sheet cladding and covering
H32 Plastics profiled sheet cladding and covering
H43 Metal composite panel cladding and coverings
H60 Plain roof tiling
H61 Fibre cement slating
H62 Natural slating
H65 Single lap roof tiling
H71A Lead sheet roofing
H71B Lead sheet flashings and weatherings
H72 Aluminium strip or sheet coverings and flashings
H73 Copper strip or sheet coverings and flashings
H74 Zinc strip or sheet coverings and flashings
H75 Stainless steel strip or sheet coverings and flashings


J10 Cementitious mortar tanking and damp proofing
J20 Mastic asphalt tanking and damp proofing
J21 Mastic asphalt roofing, insulation and finishes
J30 Liquid applied tanking and damp-proofing
J31 Liquid applied waterproof roof coatings
J40 Flexible sheet waterproofing and damp-proofing
J41 Reinforced bitumen membrane roof coverings
J42 Single layer polymeric sheet roof coverings
J44 Sheet linings for small pools and ponds

Linings/ Sheathing/ Dry partitioning

K10 Plasterboard dry linings for walls, partitions and ceilings
K11 Rigid sheet flooring, sheathing, decking, sarking, linings and casings
K13 Fine lining and panellings
K20 Timber board flooring, decking, sarking, linings and casings
K21 Wood strip or board fine flooring or linings
K30 Panel partitions
K32 Panel cubicles, linings and screens
K40 Demountable suspended ceilings
K41 Raised access floors

Windows / Doors / Stairs

L10 Windows, rooflights, screens and louvres
L20 Doors, shutters and hatches
L30 Stairs, ladders and balustrades
L40 General glazing

Surface Finishes

M10 Cement based levelling and wearing screeds
M12 Resin flooring
M13 Calcium sulfate based screeds
M20A Plastered coatings
M20B Rendered and roughcast coatings
M21 Insulation with rendered finish
M40 Stone quarry and ceramic tiling or mosaic
M42 Wood block, composition block and mosaic parquet flooring
M50 Rubber, plastics, cork, lino and carpet tiling and sheeting
M52 Decorative papers and fabrics
M60 Painting and clear finishing
M61 Intumescent coatings for fire protection of steelwork

Furniture/ Equipment

N10 General fixtures furnishings and equipment
N11 Domestic kitchen fittings, furnishing and equipment
N13 Sanitary appliances and fittings
N15 Signs and notices
N25 Permanent access and safety equipment
N91 External Signage and Interpretation

Building fabric sundries

P10 Sundry insulation and proofing work
P11 Injected cavity wall insulation
P12 Fire stopping systems
P20 Unframed isolated trims, skirtings and sundry items
P21 Door and window ironmongery
P30 Trenches, pipeways and pits for buried engineering and gas venting
P31 Holes, chases, covers and supports for services

Paving/ Planting/ Fencing/ Site furniture

Q10 Kerbs, edgings, channels and paving accessories
Q20 Granular sub-bases to pavings
Q22 Asphalt pavings
Q23 Gravel, hoggin and woodchip drives and pavings
Q24 Interlocking brick or block roads and pavings
Q25 Slab, brick, sett or cobble pavings
Q28 Topsoil and growing media
Q30 Seeding and turfing
Q31 External planting
Q40 Fencing
Q50 Site and street furniture and equipment

Disposal systems

R10 Rainwater drainage systems
R11 Above ground foul drainage systems
R12 Below ground drainage systems
R13 Land drainage
R16 Groundwater pressure relief drainage systems
R17 Soakaway and septic tank and sewage treatment systems

Piped supply systems

S15 Fountains and water features
S90 Hot and cold water supply systems

Mechanical heating/ Cooling/ Refrigeration systems

T90 Heating systems

Ventilation/ Air conditioning systems

U90 General ventilation

Ventilation/ Air conditioning systems

V90 Electrical installation

Communications/ Security/ Control systems

W40 Access control systems
W41 Intrusion and hold-up alarm systems
W44 Closed circuit television systems
W50 Fire detection and alarm systems

Transport systems

X90 Lift systems

Building fabric reference specification

Z10* Purpose made joinery
Z11* Purpose made metalwork
Z12* Preservative and fire retardant treatment
Z20* Fixings and adhesives
Z21* Mortars
Z22* Sealants

* 'Z' sections occur only in the Reference Specification and do not contain work items.

Contents subject to change without notice.

NBS by definition is the UK national building specification. Content and guidance in our products is based on UK Building Regulations, Legislation and Building Contracts. However, as the UK is a member of the EU, we have to adopt European Standards in a BS EN format. Up to 70% of Standards quoted in NBS are now in BS EN format.