ABSTRACT
The following costs are based on using Specialist Contractors and are for guidance only. Establishment of standard plant and equipment and removal on completion – – – – sum 450.00 Number; 150mm nominal diameter at base – – – – nr 50.00 Depth; 150mm nominal diameter of base
in holes of maximum depth not exceeding 5m – – – – m 18.00 in holes of maximum depth 5-10m – – – – m 18.00 in holes of maximum depth 10-20m – – – – m 23.00 in holes of maximum depth 20-30m – – – – m 29.00
Depth backfilled; imported pulverized fuel ash – – – – m 5.00 Depth backfilled; imported gravel – – – – m 7.00 Depth backfilled; bentonite grout – – – – m 10.00 Chiselling to prove rock or to penetrate obstructions – – – – h 48.00 Standing time of rig and crew – – – – h 48.00
ROTARY DRILLED BOREHOLES
The following costs are based on using Specialist Contractors and are for guidance only. Establishment of standard plant and equipment and removal on completion – – – – sum 1000.00 Setting up at each borehole position – – – – nr 8.00 Depth without core recovery; nominal minimum core diameter 100mm
ne 5.0m deep – – – – m 32.00 5-10m deep – – – – m 32.00 10-20m deep – – – – m 33.00 20-30m deep – – – – m 33.00
Depth with core recovery; nominal minimum core diameter 75mm
ne 5.0m deep – – – – m 70.00 5-10m deep – – – – m 70.00 10-20m deep – – – – m 78.00 20-30m deep – – – – m 88.00
Depth cased; semi-rigid plastic core barrel liner – – – – m 6.00
hours £ £ £ rate £
SAMPLES From the surface or from trial pits and trenches
undisturbed soft material; minimum 200mm cube – – – – nr 16.00 disturbed soft material; minimum 5kg – – – – nr 2.50 rock; minimum 5kg – – – – nr 10.00 groundwater; miniumum 1 l – – – – nr 4.00
From boreholes open tube; 100mm diameter × 450mm long – – – – nr 16.00 disturbed; minimum 5kg – – – – nr 2.50 groundwater; minimum 1 l – – – – nr 4.00 stationary piston – – – – nr 4.00 Swedish foil – – – – nr 25.00 Delft – – – – nr 25.00 Bishop sand – – – – nr 25.00
SITE TESTS AND OBSERVATIONS
Groundwater level Standard penetration
in light cable percussion boreholes – – – – nr –
Vane in borehole Plate bearing
in pits and trenches; loading table – – – – nr – in pits and trenches; hydraulic jack and kentledge – – – – nr –
California bearing ratio – – – – nr – Mackintosh probe Hand auger borehole
mm minimum diameter; 6m maximum depth – – – – nr –
INSTRUMENTAL OBSERVATIONS
General Pressure head
standpipe; 75mm diameter HDPE pipe – – – – m 29.00 piezometer – – – – m 41.77 install protective cover – – – – nr 80.00 readings – – – – nr 20.00
LABORATORY TESTS
General Classification
moisture content – – – – nr 4.24 specific gravity – – – – nr 7.07 particle size analysis by sieve – – – – nr 28.29 particle size analysis by pipette or hydrometer – – – – nr 39.62
hours £ £ £ rate £
LABORATORY TESTS – cont
General – cont Chemical content
organic matter – – – – nr 31.12 sulphate – – – – nr 21.22 pH value – – – – nr 6.84 contaminants; Comprehensive – – – – nr 247.48 contaminants; Abbreviated – – – – nr 176.86 contaminants; Mini, Screening – – – – nr 141.48 contaminants; nitrogen herbicides – – – – nr 127.34 contaminants; organophosphorus pesticides – – – – nr 106.12 contaminants; organochlorine pesticides – – – – nr 106.12
Compaction standard – – – – nr 127.33 heavy – – – – nr 127.33 vibratory – – – – nr 141.48
Permeability falling head – – – – nr 56.59
Soil strength quick undrained triaxial; set of three 38mm diameter specimens – – – – nr 28.29 shear box; peak only; size of shearbox 100×100mm – – – – nr 35.38 California bearing ratio; typical – – – – nr 42.45
Rock strength point load test; minimum 5kg sample – – – – nr 70.74
PROFESSIONAL SERVICES
General Technician – – – – hr 34.00 Technician engineer – – – – hr 46.00 Engineer or geologist
graduate – – – – hr 46.00 chartered – – – – hr 59.00 principal or consultant – – – – hr 79.00
Visits to the Site technician – – – – nr 34.00 technician engineer / graduate engineer or geologist – – – – nr 46.00 chartered engineer – – – – nr 59.00 principal or consultant – – – – nr 79.00
Overnight stays in connection with visits to the site technician – – – – nr 65.00 technician engineer / graduate engineer or geologist – – – – nr 65.00 chartered engineer / senior geologist – – – – nr 85.00 principal or consultant – – – – nr 85.00
