8.8.3-1

Underpinning for external site boundary walls, etc

Unit: m Sub-Element: 8.8.3 - 3 Underpinning to external site boundary walls
Component Information
Code:
8.8.3-1
Sequence:
1
Unit:
m
Sub-Element:
8.8.3 - 3 Underpinning to external site boundary walls
Description:

Underpinning for external site boundary walls, etc

Details to State:

details to be stated.

Component Statistics
5
Measurement Rules
10
Included Items
1
Excluded Items
Measurement Rules (5)
C1 1

The length of underpinning measured is the extreme length.

C2 2

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 in accordance with the rules of measurement for this sub-element.

C3 3

Curved work is to be described and identified separately.

C4 4

Work arising out of party wall awards/agreements is to be described and identified separately.

C5 5

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 (10)
1.

Underpinning for external site boundary walls.

2.

Preliminary trenches and underpinning pits, excavation and earthwork support.

3.

Temporary supports.

4.

Disposal of excavated material.

5.

Cutting away existing projecting foundations, etc.

6.

Preparing existing work to receive pinning up of new work.

7.

Concrete, including reinforcement and formwork.

8.

Masonry (brickwork,blockwork, etc.).

9.

Sundry items.

10.

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 (1)
1. Ref: 1.1.3

Underpinning for walls that are an integral part of the new building or rehabilitated building (included in sub-element 1.1.3).

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