1.1.5-2
Piling mats/platforms
Component Information
- Code:
- 1.1.5-2
- Sequence:
- 2
- Unit:
- m2
- Sub-Element:
- 1.1.5 - 5 Basement retaining walls
Piling mats/platforms
details,including thickness of mat/platform (mm), to be stated
Component Statistics
Measurement Rules
Included Items
Excluded Items
Measurement Rules (16)
Where components are to be enumerated, the number of components is to be stated.
The area measured for piling mats/platforms is the surface area of the piling mat/platform.
Secant piles, etc. are to be enumerated.
The linear length of guide walls and contiguous bored pile walls is measured on the centre line of the guide wall or contiguous bored pile wall, as applicable.
The area measured for steel sheet piling is the total surface area of specified sheet pile length.
The area measured for diaphragm walls is the area of the diaphragm wall, measured on the centre line of the diaphragm wall.
The measured volume of excavated material for disposal arising from piling is the cross-sectional area of the pile multiplied by the depth of the pile.
Quantity given for disposal is the bulk before excavating and no allowance is made for subsequent variations to bulk.
The area measured for trimming and cleaning faces of walls is the surface area of the exposed piled or diaphragm wall.
The linear length of capping beams is measured on the centre line of the capping beam.
The area measured for each basement retaining wall component is the area of the component, measured on the centre line of the component.
The area measured for concrete applied by spray or gun is the surface area of the surface to which it is to be applied.
Other cost-significant components are to be described and identified separately. Such components are to be measured by area (m2) or linear measurement (m), or enumerated (nr) separately.
Curved work is to be described and identified separately.
Work within existing buildings is to be described and identified separately.
Where the contractor is only responsible for designing specific elements and/or components of the building project (i.e. not the entire building project), contractor-designed work is to be described and identified separately.
Included Items (21)
Pile walls (i.e. contiguous bored pile walls, hard/hard secant pile walls and hard/soft secant pile walls), including guide walls, trimming and cleaning faces, cutting out concrete to tops of piles, preparing pile heads and reinforcement for capping, and disposal of excavated material arising from piling.
Note: where no contamination/remediation strategy report exists, an allowance should be made within the construction of disposing of contaminated material.Steel sheet piling, including extensions and cutting off surplus lengths
Diaphragm walls, including excavating and disposal of excavated material, support fluid to uphold faces of excavation, concrete, reinforcement, formwork, joints and waterproof joints, guide walls, and trimming and cleaning faces. (Refer to note above about disposal of contaminated material).
Ground anchors.
Capping beams, including concrete, reinforcement and formwork.
Piling mats and platforms (installing, moving and removing on completion).
Pile rigs/other plant, including bringing to and removing from site, maintenance, erection, dismantling and moving piling rigs to each pile position.
Pile tests (e.g. load tests and integrity tests).
Instrumentation and monitoring
Groundwater pressure relief drains for basements and retaining walls connected to the drainage system (i.e. fin drains, filter drains and blanket drains) to soil connection.
Concrete walls forming an integral part of the embedded basement wall construction, including reinforcement and tying to piled wall formwork.
Specialist concrete grades, such as waterproof concrete.
Temporary works (e.g. props and wailings to support contiguous bored piled walls) and removal, including any necessary temporary anchors, foundations, etc.
Fixings cast into/fixed to concrete retaining walls to retain masonry walls (e.g. brickwork, blockwork and stonework) facing wall.
Masonry walls/facings (e.g. brickwork, blockwork and stonework) forming an integral part of the embedded basement retaining wall.
Waterproof tanking to walls.
Applied protection to external tanking (e.g. protection boards).
Thermal insulation, damp-proof membranes, vapour barriers, etc.
Concrete applied by spray or gun, including reinforcement, formwork and design joints.
Sundry items.
Where works are to be carried out by a subcontractor, the subcontractor’s preliminaries, design fees, risk allowance, overheads and profit, with allowance for these to be made within unit rate applied to element or component.
Excluded Items (6)
External basement walls not in contact with earthwork, i.e. non-retaining walls (included in sub-element 2.5.2).
Bulk excavation to form basements (included in sub-element 1.1.4).
Piled walls providing temporary support to excavation works (included in sub-element 1.1.4).
Applied finishes to inner faces of external walls (included in element 3.1).
Retaining walls not providing external walls to building, i.e. that form part of the external works (included in sub-element 8.4.3).
Drainage beyond soil connection (included in sub-elements 1.1.3 or 8.6.1, as appropriate).
Navigation
Export
API Access
Access this component data programmatically:
GET /api/components/1.1.5/2/- Complete component details