CBI - Reference

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

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

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

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

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

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

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

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

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

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

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

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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

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

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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

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

Geotextile stabilization Dynamic compaction Vibroplacement Power vibration Sand stowing

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

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

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

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

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

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)

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)

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)

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

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)

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)

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)

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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

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

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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

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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