RESOURCESLABOUR

Trial hole gang 1 ganger or chargehand (skill rate 4)

10.16

1 skilled operative (skill rate 4)

10.16

2 unskilled operatives (general)

19.04

1 plant operator (skill rate 3)

12.38

Total Gang Rate/Hour

£ 51.74

RESOURCESPLANT

Trial holes 8 tonne wheeled backacter

15.01

3 tonne dumper 4.97 3.7 m3/min compressor, 2 tool

4.43

two 2.4 m3/min road breakers

1.40

extra 50 ft/15 m hose

0.23

plate compactors; vibrating compaction; plate 180 kg/600 mm

1.24

Total Rate/Hour £ 27.28 TRIAL PITS AND TRENCHES

The following costs assume the

plant and excavating and backfilling on the same day Trial holes measured by number Excavating trial hole; plan size 1.0×2.0 m; supports, backfilling

ne 1.0 m deep 0.24 12.42 6.55 – nr 18.97 1.0-2.0 m deep 0.47 24.55 12.84 – nr 37.39 over 2.0 m deep 0.53 27.69 14.47 – nr 42.16 Excavating trial hole in rock or similar; plan size 1.0×2.0 m; supports, backfilling

ne 1.0 m deep 0.28 14.63 7.64 – nr 22.27 1.0-2.0 m deep 0.51 26.64 13.93 – nr 40.57 over 2.0 m deep 0.58 30.30 15.82 – nr 46.12 Trial holes measured by depth Excavating trial hole; plan size 1.0×2.0 m;

supports, backfilling

ne 1.0 m deep 0.24 12.54 6.55 – m 19.09 1.0-2.0 m deep 0.53 27.69 14.47 – m 42.16 2.0-3.0 m deep 0.59 30.82 16.11 – m 46.93 3.0-5.0 m deep 0.65 33.96 17.75 – m 51.70 Excavating trial hole in rock or similar; plan size 1.0×2.0 m; supports, backfilling

ne 1.0 m deep 2.95 154.11 80.50 – m 234.61 1.0-2.0 m deep 3.65 190.68 99.60 – m 290.27 2.0-3.0 m deep 3.95 206.35 107.78 – m 314.13 3.0-5.0 m deep 4.50 235.08 122.78 – m 357.86

rate £ Sundries in trial holes

Removal of obstructions from trial holes irrespective of depth

1.00 52.24 27.28 – hr 79.52

Pumping; maximum depth 4.0 m minimum 750 litres per hour

0.06 1.14 5.94 – hr 7.08

LIGHT CABLE PERCUSSION BOREHOLES

The following costs are based on using Specialist Contractors and are for guidance only.