Page 21 - SMM2 eBOOK

D.12 Types of excavation (cont'd)

5. Excavating basements and the like (measured to the outside of the foundations) shall be
given in cubic metres stating the starting level as clause D.11. Existing voids shall be
deducted.

6. Excavating pits to receive bases of stanchions, columns, isolated piers and the like
(grouped together) shall be given in cubic metres stating the number and the starting level
as clause D.11. Excavating pits having both plan dimensions less than 1.25m shall be
given separately.

7. Excavating trenches to receive foundations shall be given in cubic metres, stating the
starting level as clause D.11.

8. Excavating for pile caps and trenches for ground beams between piles shall be given in
cubic metres stating the starting level, as clause D.11.

9. Excavating trenches to receive service pipes, cables and the like shall be given separately
in metres stating the starting level, as clause D.11 and the average depth to the nearest
0.25m. Details of type and size of service pipes, cables, earthwork support, grading
bottoms if required, filling in, compaction and disposal of surplus soil shall be given in
description of such trenches. If the trench is next to roadway, or next to existing buildings
or made in unstable ground (e.g. running silt, running sand and the like) these shall be
stated in the description.

10. Excavating around services crossing an excavation shall be enumerated and given as
extra over the various descriptions of excavations; details of type, size, depth of service
and iength exposed shall be given. Any temporary support to services shall be deemed to
be inciuded with the item.

11. Excavating alongside services or groups of services shall be given in metres as extra over
the various descriptions of excavation; details of type, size, depth of service shall be
given. Any temporary support to services shall be deemed to be included with the item.
Details of the type of service would include gas, water, electricity, telecommunication,
sewer, etc. If this information is available on a services drawing, then this should be made
available.

12. Breaking up concrete, reinforced concrete, brick paving, tarmacadam and the like on the
surface of the ground shall each be given separately in square metres as extra over the
various description of excavation stating the thickness. In the case of service trenches
measured in accordance with clause D.12.9, this work shall be given in metres stating the
thickness.

13. Breaking up concrete, reinforced concrete and the like met with in excavation shall each
be given separately in cubic metres irrespective of depth as extra over the various types
of excavation. In the case of service trenches measured in accordance with clause
D.12.9, this work shall be given in metres stating the thickness.

14. Excavating below ground water level as defined in clause D.1.1.a shall be given in cubic
metres as extra over all types of excavation irrespective of depth. If the post contract
water level differs from the pre-contract water level the measurements shall be revised in
accordance with the post contract water level.

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