ABSTRACT
Grease interceptors; internal access and bucket 600×450mm, PC £704.00*; metal tray and lid, square hopper with horizontal inlet 0.35 15.73 0.80 1435.81 nr 1452.34
Precast concrete; set in concrete grade C20, 150mm thick; additional excavation and disposal Road gulley; trapped with rodding eye; galvanized bucket; stopper
450mm diameter × 750mm deep, PC £45.00*; cast iron road gulley grating and frame group 4, 434×434mm, PC £55.00*, on Class B engineering brick seating 0.50 22.48 1.14 311.55 nr 335.17 450mm diameter × 900mm deep, PC £46.00*; cast iron road gulley grating and frame group 4, 434×434mm, PC £55.00*, on Class B engineering brick seating 0.54 24.27 1.23 314.55 nr 340.05 450mm diameter × 1050mm deep, PC £50.00*; cast iron road gulley grating and frame group 4, 434×434mm, PC £55.00*, on Class B engineering brick seating 0.58 26.07 1.32 316.22 nr 343.61
FRENCH DRAINS, RUBBLE DRAINS, DITCHES The rates assume the most efficient items of plant (excavator) and are optimum rates assuming continuous output with no delays caused by other operations or works. Ground conditions are assumed to be good easily worked soil with no abnormal conditions that would affect outputs and consistency of work. Multiplier Table for labour and plant for various site conditions for working: out of sequence × 2.75 (minimum) in hard clay × 1.75 to 2.00 in running sand × 2.75 (minimum)
hours £ £ £ rate £
in broken rock × 2.75 to 3.50 below water table × 2.00 (minimum) Excavation of trenches for unpiped rubble drains (excluding trench support); cross-sectional area
0.25-0.50m2 0.10 6.91 2.54 – m 9.45 0.50-0.75m2 0.12 8.29 3.04 – m 11.33 0.75-1.00m2 0.14 9.67 3.55 – m 13.22 1.00-1.50m2 0.17 11.74 4.31 – m 16.05 1.50-2.00m2 0.20 13.81 5.07 – m 18.88
Filling French and rubble drains with graded material graded material; 20mm stone aggregate; PC £4.45/t 0.30 20.72 7.61 29.50 m3 57.83 broken brick/concrete rubble; PC £3.42/t 0.29 20.03 7.36 30.05 m3 57.44
Excavation of rectangular section ditches; unlined; cross-sectional area
0.25-0.50m² 0.11 7.60 2.74 – m 10.34 0.50-0.75m² 0.13 8.98 3.23 – m 12.21 0.75-1.00m² 0.16 11.05 3.98 – m 15.03 1.00-1.50m² 0.20 13.81 4.98 – m 18.79 1.50-2.00m² 0.25 17.27 6.22 – m 23.49
Excavation of rectangular ditches; lined with precast concrete slabs; cross-sectional area
0.25-0.50m² 0.15 10.36 4.16 12.99 m 27.51 0.50-0.75m² 0.25 17.27 6.95 21.40 m 45.62 0.75-1.00m² 0.36 24.86 10.00 30.45 m 65.31 1.00-1.50m² 0.40 27.62 11.11 43.02 m 81.75 1.50-2.00m² 0.45 31.08 12.50 60.68 m 104.26
Excavation of vee section ditches; unlined; cross-sectional area
0.25-0.50m² 0.10 6.91 2.95 – m 9.86 0.50-0.75m² 0.12 8.29 3.52 – m 11.81 0.75-1.00m² 0.14 9.67 4.12 – m 13.79 1.00-1.50m² 0.18 12.43 5.29 – m 17.72 1.50-2.00m² 0.22 15.19 6.47 – m 21.66
DUCTS AND METAL CULVERTS
Galvanized steel culverts; bitumen coated Sectional corrugated metal culverts, nominal internal diameter 0.5-1m; 1000mm nominal internal diameter, 1.6mm thick
not in trenches 0.15 9.88 0.71 117.87 m 128.46 in trenches, depth not exceeding 1.5m 0.31 20.41 9.06 117.87 m 147.34 in trenches, depth 1.5-2m 0.43 28.32 12.57 117.87 m 158.76 in trenches, depth 2-2.5m 0.51 33.58 14.91 117.87 m 166.36 in trenches, depth 2.5-3m 0.60 39.51 17.55 117.87 m 174.93
hours £ £ £ rate £
DUCTS AND METAL CULVERTS – cont
Galvanized steel culverts – cont Sectional corrugated metal culverts, nominal internal diameter exceeding 1.5m; 1600mm nominal internal diameter, 1.6mm thick
not in trenches 0.21 13.83 1.00 189.10 m 203.93 in trenches, depth 1.5-2m 0.44 28.97 12.87 189.10 m 230.94 in trenches, depth 2-2.5m 0.56 36.88 16.38 189.10 m 242.36 in trenches, depth 2.5-3m 0.68 44.78 19.89 189.10 m 253.77 in trenches, depth 3-3.5m 0.82 54.00 24.00 189.10 m 267.10
Sectional corrugated metal culverts, nominal internal diameter exceeding 1.5m; 2000mm nominal internal diameter, 1.6mm thick
not in trenches 0.26 17.12 1.24 400.27 m 418.63 in trenches, depth 2-2.5m 0.46 30.29 13.47 400.27 m 444.03 in trenches, depth 2.5-3m 0.60 39.51 17.55 400.27 m 457.33 in trenches, depth 3-3.5m 0.75 49.39 21.93 400.27 m 471.59 in trenches, depth 3.5-4m 0.93 61.24 27.21 400.27 m 488.72
Sectional corrugated metal culverts, nominal internal diameter exceeding 1.5m; 2200mm nominal internal diameter, 1.6mm thick
not in trenches 0.33 21.73 1.57 451.01 m 474.31 in trenches, depth 2.5-3m 0.64 42.14 18.72 451.01 m 511.87 in trenches, depth 3-3.5m 0.77 50.70 22.53 451.01 m 524.24 in trenches, depth 3.5-4m 1.02 67.17 29.85 451.01 m 548.03 in trenches, depth exceeding 4m 1.32 86.92 38.61 451.01 m 576.54
OTHER PIPEWORK ANCILLARIES
Notes Refer to Section G (Concrete and concrete ancillaries) for costs relevant to the construction of Headwall Structure.
