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 472.50 Number; 150mm nominal diameter at base – – – – nr 52.50 Depth; 150mm nominal diameter of base
in holes of maximum depth not exceeding 5m – – – – m 18.90 in holes of maximum depth 5-10m – – – – m 18.90 in holes of maximum depth 10-20m – – – – m 24.15 in holes of maximum depth 20-30m – – – – m 30.45
Depth backfilled; imported pulverised fuel ash – – – – m 5.25 Depth backfilled; imported gravel – – – – m 7.35 Depth backfilled; bentonite grout – – – – m 10.50 Chiselling to prove rock or to penetrate obstructions – – – – h 50.40 Standing time of rig and crew – – – – h 50.40
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 35.20 5-10m deep – – – – m 35.20 10-20m deep – – – – m 36.30 20-30m deep – – – – m 36.30
Depth with core recovery; nominal minimum core diameter 75mm
ne 5.0m deep – – – – m 77.00 5-10m deep – – – – m 77.00 10-20m deep – – – – m 85.80 20-30m deep – – – – m 96.80
Depth cased; semi-rigid plastic core barrel liner – – – – m 6.60
hours £ £ £ rate £
SAMPLES
From the surface or from trial pits and trenches undisturbed soft material; minimum 200mm cube – – – – nr 18.40 disturbed soft material; minimum 5kg – – – – nr 2.88 rock; minimum 5kg – – – – nr 11.50 groundwater; miniumum 1 l – – – – nr 4.60
From boreholes open tube; 100mm diameter × 450mm long – – – – nr 18.40 disturbed; minimum 5kg – – – – nr 2.88 groundwater; minimum 1 l – – – – nr 4.60 stationary piston – – – – nr 4.60 Swedish foil – – – – nr 28.75 Delft – – – – nr 28.75 Bishop sand – – – – nr 28.75
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 31.90 piezometer – – – – m 45.95 install protective cover – – – – nr 88.00 readings – – – – nr 22.00
LABORATORY TESTS
General Classification
moisture content – – – – nr 4.88 specific gravity – – – – nr 8.13 particle size analysis by sieve – – – – nr 32.53 particle size analysis by pipette or hydrometer – – – – nr 45.56
hours £ £ £ rate £
Chemical content organic matter – – – – nr 35.79 sulphate – – – – nr 24.40 pH value – – – – nr 7.87 contaminants; Comprehensive – – – – nr 284.60 contaminants; Abbreviated – – – – nr 203.39 contaminants; Mini, Screening – – – – nr 162.70 contaminants; nitrogen herbicides – – – – nr 146.44 contaminants; organophosphorus pesticides – – – – nr 122.04 contaminants; organochlorine pesticides – – – – nr 122.04
Compaction standard – – – – nr 146.43 heavy – – – – nr 146.43 vibratory – – – – nr 162.70
Permeability falling head – – – – nr 65.08
Soil strength quick undrained triaxial; set of three 38mm diameter specimens – – – – nr 32.53 shear box; peak only; size of shearbox 100× 100mm – – – – nr 40.69 California bearing ratio; typical – – – – nr 48.82
Rock strength point load test; minimum 5kg sample – – – – nr 81.35
PROFESSIONAL SERVICES
General Technician – – – – hr 39.10 Technician engineer – – – – hr 52.90 Engineer or geologist
graduate – – – – hr 52.90 chartered – – – – hr 67.85 principal or consultant – – – – hr 90.85
Visits to the site technician – – – – nr 39.10 technician engineer/graduate engineer or geologist – – – – nr 52.90 chartered engineer – – – – nr 67.85 principal or consultant – – – – nr 90.85
Overnight stays in connection with visits to the site technician – – – – nr 74.75 technician engineer/graduate engineer or geologist – – – – nr 74.75 chartered engineer/senior geologist – – – – nr 97.75 principal or consultant – – – – nr 97.75
