Masterspec

CBI - Reference

21 Demolition 21 Demolition
211 Demolition 211 Demolition
2111 Demolishing complete structures to ground level 2111 Demolishing complete structures to ground level
Demolishing to ground or general surface level complete structures, including services, fixtures and finishes, setting aside, removing and disposing of demolished and surplus materials

Demolishing structures to ground level, including contents Setting aside demolished material required for reuse Removing and disposing of surplus demolished materials Taking appropriate measures to deal with buildings of special construction

2112 Partial demolition 2112 Partial demolition
Partial demolition of structures to ground level or demolition of parts of buildings, including interiors and facades, to prepare for retrofitting

Partial demolition of structures to ground level, including contents Demolishing facades and interiors Providing temporary structural support as necessary to the structure remaining Protecting parts of buildings left exposed when partial demolition occurs, against nuisance, weather, intrusion, etc. Setting aside and storing items for reuse Removing and disposing of surplus demolished materials

212 Preparation before demolition 212 Preparation before demolition
2121 Decommissioning, diverting and maintaining building services 2121 Decommissioning, diverting and maintaining building services
Decommissioning building services prior to and during demolition and diverting building services to maintain services as required

Decommissioning all services prior to demolition and progressively during demolition Diverting building services to maintain supplies and services Sealing off all services to the requirements of the supply authorities

2122 Removing specified items 2122 Removing specified items
Removing specified items prior to demolition of structures

Removing specified materials and components from structures prior to their demolition Taking items removed into store and holding until subsequent reuse Handing over to the Principal specified removed items Repairing removed items as specified

2123 Encapsulating or removing and disposing of hazardous substances 2123 Encapsulating or removing and disposing of hazardous substances
Encapsulating or removing and disposing of toxic and/or hazardous substances in/from existing buildings

Removing toxic and hazardous materials and components prior to demolition Encapsulation of substances which are to remain in position Sealing against the escape of the toxic and hazardous substances during encapsulation or removal Disposal of substances removed

2124 Protecting structures and site 2124 Protecting structures and site
Protecting structures on and off site and protecting roads, paths and vegetation for the duration of the Works

Protecting structures on site Protecting structures off site Protecting services Protecting roads and paths Protecting vegetation

213 Support for structures 213 Support for structures
2131 Permanent shoring 2131 Permanent shoring
Permanent shoring and supports to existing structures on and off site, which are to remain in place at the conclusion of the Contract

Tubular, timber and steel scaffolding in - dead, raking, flying or box shores - strutting and bracing - slab jacking - sole plates and wall plates - needles, including holes - brackets, blockings and similar metalwork Wedging and pinning Concrete, grillage or other foundations for shores

2132 Retaining existing facades 2132 Retaining existing facades
Retaining facades of structures which are otherwise to be demolished and maintaining the facades until incorporated into a new structure

Retaining facades and their associated structures during demolition of other parts of the structure Providing the required supporting framework to support the facades Temporarily protecting facades from damage

2133 Temporary support to existing structures 2133 Temporary support to existing structures
The temporary support of houses and similar existing structures during lifting for the construction of alterations and for re-piling

Preparation, safety and site management Demolition and salvage Jacking up and support Lowering and removal of supports

214 New work 214 New work
2141 Reinstatement after demolition 2141 Reinstatement after demolition
Reinstatement and new construction to existing buildings, of limited scope, to be carried out after demolition

Weatherproofing facades and surfaces of existing buildings on site, left exposed by demolition Weatherproofing facades and surfaces of existing buildings off site, left exposed by demolition New construction, of limited scope, within existing buildings, carried out after demolition

215 Relocation 215 Relocation
2151 Relocation of houses 2151 Relocation of houses
The moving of houses and similar existing structures from an existing site to a new site, temporary support during lifting and lowering, transportation and relocation, re-establishment on new site

Preparation, safety and site management for both sites Disconnection of services existing site, of limited scope Foundations and piles on new site, of limited scope Jacking up and support Transportation Lowering and support Connecting services new site, of limited scope Making good, of limited scope

22 Preparation and groundwork 22 Preparation and groundwork
221 Site investigation 221 Site investigation
2210 Preparation and groundwork 2210 Preparation and groundwork

No content available for this item.

2215 Site investigation 2215 Site investigation
Excavating and/or drilling to determine strata and ground water levels, taking samples, performing site and laboratory tests to obtain appropriate site information

Excavating and testing to determine the location, levels and nature of all existing site services Trial pits, trenches, etc. Mechanical boring and drilling Hand auger boring Determining and recording the levels of all strata Taking disturbed and undisturbed samples Laboratory tests for mechanical properties of subsoil material Laboratory tests for harmful chemicals, substances, radiations, etc. Field tests, e.g.: - penetration tests - bearing tests - Menard pressure meter tests - static sounding tests Determining ground water levels, flows, quality Notifying and seeking evidence of any archaeological sites Seeking evidence of seismic faults and slips and settlements Interpreting results of all tests and investigations

222 Site preparation 222 Site preparation
2221 Removing vegetation 2221 Removing vegetation
Removing and disposing of vegetation on site

Applying herbicide as necessary Removing and disposing of general vegetation and trees Setting aside vegetation for replanting

2222 Grubbing out roots 2222 Grubbing out roots

No content available for this item.

2223 Removing subsurface constructions 2223 Removing subsurface constructions

No content available for this item.

2224 Site dewatering 2224 Site dewatering
Temporarily lowering the ground water level over the whole or parts of the site to facilitate construction, the work being executed by a specialist firm or by the General Contractor

Forming well points and relief wells Gravel or other filling and sand drains Wick drains Installing and removing drain tubes and ring mains Excavating sumps Temporary diversion of waterways and surface drainage Pumps and pumping Off site disposal of water

223 Ground consolidation 223 Ground consolidation
2231 Ground preconsolidation 2231 Ground preconsolidation
Placing excavated material, ballast or other material upon the ground surface as preloading, to achieve consolidation

Placing excavated material from the site in specified areas to the required depths Placing imported material to the required depth in specified areas

2232 Mechanical ground stabilization 2232 Mechanical ground stabilization
Stabilizing and/or improving the bearing capacity and slip resistance of existing ground by means of geotextile stabilization, dynamic compaction, vibroplacement, power vibration, sand stowing and other mechanical methods

Geotextile stabilization Dynamic compaction Vibroplacement Power vibration Sand stowing

2233 Chemical ground stabilization 2233 Chemical ground stabilization
Stabilizing and/or improving the bearing capacity and slip resistance of existing ground by cementitious admixtures, injections and electro-chemical methods

Cement and/or lime admixtures incorporated into the ground Binding agents injected into voids in the ground Electro-chemical stabilization

224 Excavating and backfilling 224 Excavating and backfilling
2241 Excavating and filling 2241 Excavating and filling
Excavating to required levels and general filling

Removing material placed to achieve preconsolidation Excavating to required levels Dealing with unforeseen atmospheric, environmental and surface conditions Breaking out existing hard paving Notifying archaeological finds and items of value Benching sloping ground to receive filling Excavating to form pits and trenches, including excavation for trenches shared by building services Consolidating bottoms of excavations Keeping excavations free of water, including diversion of surface water Making stockpiles of excavated materials Disposing of surplus and non-reusable excavated material Consolidating and compacting general excavated surfaces Filling to required levels and surfaces with excavated material and/or imported material Consolidating and compacting filling to achieve required levels and densities

2242 Backfilling 2242 Backfilling
Backfilling to construction

Backfilling to pits and trenches after construction is complete Backfilling against constructed work with specified material, including installing protective sheeting where carried out as part of the backfilling Consolidating and compacting backfilling and finishing to required levels

2243 Removing subsurface constructions 2243 Removing subsurface constructions
Breaking out and removing subsurface constructions including site encroachments

Breaking out subsurface constructions, including pits, etc., and all associated services Making safe and removing underground tanks, including supports and holding down attachments Setting aside or disposing of material removed

2244 Site surfacing 2244 Site surfacing
Surfacing to the site

Aggregate surfacing to the site where required, including consolidation Blinding aggregate surfacing with fine material Sand or other surfacing to the finished levels Covering the ground surface where required with vapourproof sheeting, held in place Sand levelling bed under underlays

225 Damp-proofing to site platforms 225 Damp-proofing to site platforms

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226 Insulation to site platforms 226 Insulation to site platforms

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23 Foundations 23 Foundations
231 Piling 231 Piling
2311 Cast in place concrete piling 2311 Cast in place concrete piling
Cast in place concrete piles to provide support to the site and for the superstructure

Test piles Holes for piles formed by boring or by driving shells, including belling Proving bores to establish founding levels Cast-in-place concrete piles, including post-tensioned piles Temporary or permanent lining to bored holes Lagging laid between or behind piles Cutting piles to length Disposing of surplus excavated and other material Non-fixed work (see Explanatory notes)

2312 Driven precast concrete piling 2312 Driven precast concrete piling
Driven precast concrete piles to provide support to the site and for the superstructure

Test piles Proving bores to establish founding levels Driven precast concrete piles, including prestressed and hollow section piles Lagging laid between or behind piles Cutting piles to length Disposing of surplus excavated and other material Non-fixed work (see Explanatory notes)

2313 Driven steel piles 2313 Driven steel piles
Driven steel piles, including steel sheet piling, to provide support to the site and for the superstructure

Test piles Proving bores to establish founding levels Driven steel piles, including sheet piling Lagging laid between or behind piles Cutting piles to length Disposing of surplus excavated and other material Non-fixed work (see Explanatory notes)

2314 Screwed steel piles 2314 Screwed steel piles
Screwed steel piles to provide support to the site, footings and the superstructure

Test piles Excavation for piles Screwed steel piles Disposing of surplus excavated and other material Non-fixed work (see Explanatory notes)

2315 Composite piles 2315 Composite piles
Composite piles of steel and concrete, to provide support to the site and for the superstructure

Test piles Holes for piles formed by boring or by driving shells Proving bores to establish founding levels Composite piles of steel and concrete Temporary or permanent lining to bored holes Lagging laid between or behind piles Cutting piles to length Disposing of surplus excavated and other material Non-fixed work (see Explanatory notes)

2316 Driven timber piles and poles 2316 Driven timber piles and poles
Driven timber piles to provide support to the site and for the superstructure

Test piles Proving bores to establish founding levels Driven timber piles Lagging laid between or behind piles Cutting piles to length Disposing of surplus excavated and other material Non-fixed work (see Explanatory notes)

232 Pole, post and block footings 232 Pole, post and block footings
2321 Timber pole foundations 2321 Timber pole foundations
Timber poles forming foundations for constructions

Boring for poles Setting poles in bored holes, with or without lining, on in situ or precast concrete pads Compacting around pile and providing concrete filling and collar Concrete sealing against pole at ground level Cutting off excess length to top of poles Fitting termite shields Non-fixed work (see Explanatory notes)

2322 Precast concrete block footings 2322 Precast concrete block footings

No content available for this item.

2323 Timber posts and blocks 2323 Timber posts and blocks

No content available for this item.

2324 Steel jack studs 2324 Steel jack studs

No content available for this item.

233 Underpinning 233 Underpinning
2331 Underpinning 2331 Underpinning
Inserting additional foundation support under and around existing footings and constructions

Excavating below and around existing footings Needles, toms and other temporary supports to the existing structure Underpinning of steel grillages, concrete, brickwork and/or blockwork to support existing footings Wedging and jacking Concrete injection minipiles Installing and protecting waterproofing to existing structures Cutting away existing foundations as required Necessary associated backfilling

234 Specialist construction 234 Specialist construction
2341 Diaphragm construction 2341 Diaphragm construction
In situ concrete poured using a displacement system to form footings and walls

Placement of reinforcement and ancillaries in excavated pit or trench Filling excavation with bentonite or similar slurry Pouring concrete to displace the slurry

2342 Pressure injected footings 2342 Pressure injected footings

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2343 Ground anchors 2343 Ground anchors

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235 Pest control 235 Pest control
2351 Pest control 2351 Pest control

No content available for this item.

236 Foundation walls and footings 236 Foundation walls and footings
2361 Concrete strip footings 2361 Concrete strip footings

No content available for this item.

2362 Concrete masonry foundation walls 2362 Concrete masonry foundation walls
Discrete concrete masonry foundation walls of specific or non-specific design, forming foundations for light framed buildings

Sealing to openings, holes and joints as required to suit subcontractor and General Contractor responsibility Mortar Hollow concrete blocks of all types Cementitious filling and grouting of cores and beam blocks Reinforcement Provision for concrete slabs Dpc’s, termite shields Cleaning down Anchors, cramps, dowels, restraining members Movement joints and fillers Forming openings and cutting holes as required to suit subcontractor and General Contractor responsibility Provision for framing elements Accessories, vents, sills, lintels, etc., built into the blockwork Forming and cutting blockwork

239 Ancillary items; repairing and altering foundations 239 Ancillary items; repairing and altering foundations
24 Minor demolition and alterations 24 Minor demolition and alterations
241 Minor alteration work 241 Minor alteration work
2411 Minor alteration work 2411 Minor alteration work
Minor alteration work, but which can involve several trades, including building services, in demolishing, altering, adapting and or repairing existing buildings

Minor work of a highly specialized nature Work which is neither sufficiently extensive nor similar in character to new work to be included in the appropriate Work sections in other Groups Work which can be most appropriately described in narrative Minor work where several trades may be involved, which would be inappropriate to separate into multiple Work sections Minor work of a complex or special nature, not similar in character to new work included in appropriate Work sections

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