Page 20 - SMM2 eBOOK

D.6 Lifting turf

Lifting turf which is required to be preserved shall be given in square metres stating the method
of preservation and disposal.

D.7 Topsoil

Excavating topsoil which is required to be preserved shall be given in square metres stating the
average depth. Handling and disposal of topsoil shall be given in accordance with clauses D.17-
22.

D.8 Alternative method of measurement

Cutting down trees and removing tree stumps (irrespective of girth) and grubbing up their roots,
which shall be deemed to include their disposal, may be given as an item stating the area.
Clearing of undergrowth within such areas and grubbing up their roots shall be given in the
description.

Excavation

D.9 Volume to be measured

The quantities given for excavating and subsequent disposal shall be the bulk before excavating
and no allowance shall be made for any subsequent variations to bulk or for any extra space
required to accommodate earthwork support, formwork for concrete and working space.

D.10 Depth classification

Depth of excavation shall unless otherwise required by this document be classified as follows:

Maximum depth not exceeding 0.25m
“ “ “ “ 1.00m
“ “ “ “ 2.00m
" " " “ 4.00m
and thereafter in 2.00m stages

D.11 Starting level

The starting level shall be the "ground level", "reduced level”, “formation level” or other such
levels from which excavation shall commence and the appropriate level shall be so stated and
described.

D.12 Types of excavation

1. Excavation around piles shall be so described.

2. Excavation in rock shall be so described. Rock is dekned as any material met with in
excavation which is of such size or position that it can be removed only by means of
wedges, levers, special plant (power operated hammers, drills and chisels, special
attachment to mechanical plant such as rock buckets, rippers, hammers, chisels)
explosives or chemicals. Alternatively rock may be given as extra over each of the various
types of excavation.

3. Curved excavation shall be so described irrespective of radius.

4. Excavating to reduce level shall be given in cubic metres.

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