ABSTRACT
Clay road gulley; 450mm diameter × 900mm deep – – – 279.12 nr 279.12 C.I. gulley grating and frame; 434×434mm to clay – – – 183.50 nr 183.50 Clay yard gulley; 225mm diameter; including grating – – – 255.36 nr 255.36 Clay grease interceptor; 600×450mm – – – 1422.25 nr 1422.25
Culvert; Corrugated steel 1.6mm thick; 1000mm diameter – – – 103.30 m 103.30 2.0mm thick; 1600mm diameter – – – 164.70 m 164.70 2.0mm thick; 2000mm diameter – – – 355.95 m 355.95 2.0mm thick; 2200mm diameter – – – 451.85 m 451.85
Labour Total hours £ £ £ rate £
RESOURCES – PLANT Gullies
0.4m3 hydraulic excavator 37.03 2 t dumper (30% of time) 1.98 2.80m3/min compressor, 2 tool (30% of time) 2.21 compaction plate/roller (30% of time) 0.74 2.40m3/min road breaker (30% of time) 1.31 54mm poker vibrator (30% of time) 0.41 extra 15 ft / 50m hose (30% of time) 0.09 disc saw (30% of time) 0.28 small pump (30% of time) 1.11 Total Rate/Hour £ 45.17
French/rubble drains, ditches and trenches; ducts and metal culverts
0.4m3 hydraulic backacter 37.03 2 t dumper (30% of time) 1.98 disc saw (30% of time) 0.28 compaction plate/roller (30% of time) 1.81 2.80m3/min compressor, 2 tool (30% of time) 2.21 small pump (30% of time) 1.11 Total Rate/Hour £ 44.42
MANHOLES
Brick construction Design criteria used in models:
* class A engineering bricks * 215 thick walls generally; 328 thick to chambers exceeding 2.5m deep
* 225mm plain concrete C20/20 base slab * 300mm reinforced concrete C20/20 reducing slab
* 125mm reinforced concrete C20/20 top slab * maximum height of working chamber 2.0m above benching
* 750×750 access shaft * plain concrete C15/20 benching, 150mm clay main channel longitudinally and two 100 branch channels
* step irons at 300mm centres, doubled if depth to invert exceeds 3000mm
* heavy duty manhole cover and frame 750×700 chamber 500 depth to invert
excavation, support, backfilling and disposal – – – – – 28.00 concrete base – – – – – 80.00 brickwork chamber – – – – – 245.00 concrete cover slab – – – – – 85.00 concrete benching, main and branch channels – – – – – 20.00 step irons – – – – – 15.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 823.00
Labour Total hours £ £ £ rate £
750×700 chamber 1000 depth to invert excavation, support, backfilling and disposal – – – – – 60.00 concrete base – – – – – 80.00 brickwork chamber – – – – – 495.00 concrete cover slab – – – – – 85.00 concrete benching and channels – – – – – 20.00 step irons – – – – – 25.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1115.00
750×700 chamber 1500 depth to invert excavation, support, backfilling and disposal – – – – – 80.75 concrete base – – – – – 80.00 brickwork chamber – – – – – 745.00 concrete cover slab – – – – – 85.00 concrete benching and channels – – – – – 20.00 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1405.75
900×700 chamber 500 depth to invert excavation, support, backfilling and disposal – – – – – 35.00 concrete base – – – – – 100.00 brickwork chamber – – – – – 265.00 concrete cover slab – – – – – 100.00 concrete benching and channels – – – – – 30.00 step irons – – – – – 15.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 895.00
900×700 chamber 1000 depth to invert excavation, support, backfilling and disposal – – – – – 65.00 concrete base – – – – – 100.00 brickwork chamber – – – – – 535.00 concrete cover slab – – – – – 100.00 concrete benching and channels – – – – – 30.00 step irons – – – – – 25.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1205.00
900×700 chamber 1500 depth to invert excavation, support, backfilling and disposal – – – – – 110.25 concrete base – – – – – 100.00 brickwork chamber – – – – – 800.00 concrete cover slab – – – – – 100.00 concrete benching and channels – – – – – 30.00 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1535.25
Labour Total hours £ £ £ rate £
MANHOLES – cont
Brick construction – cont 1050×700 chamber 1500 depth to invert
excavation, support, backfilling and disposal – – – – – 141.58 concrete base – – – – – 110.00 brickwork chamber – – – – – 855.00 concrete cover slab – – – – – 115.00 concrete benching and channels – – – – – 32.50 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1649.08
1050×700 chamber 2500 depth to invert excavation, support, backfilling and disposal – – – – – 255.00 concrete base – – – – – 110.00 brickwork chamber – – – – – 1425.00 concrete cover slab – – – – – 115.00 concrete benching and channels – – – – – 32.50 step irons – – – – – 82.50 access cover and frame – – – – – 350.00 TOTAL – – – – £ 2370.00
1050×700 chamber 3500 depth to invert excavation, support, backfilling and disposal – – – – – 350.00 concrete base – – – – – 110.00 brickwork chamber – – – – – 1995.00 access shaft – – – – – 2040.00 reducing slab – – – – – 140.00 concrete cover slab – – – – – 80.00 concrete benching and channels – – – – – 32.50 step irons – – – – – 110.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 5207.50
1350×700 chamber 2500 depth to invert excavation, support, backfilling and disposal – – – – – 308.00 concrete base – – – – – 140.00 brickwork chamber – – – – – 1600.00 concrete cover slab – – – – – 140.00 concrete benching and channels – – – – – 40.00 step irons – – – – – 82.50 access cover and frame – – – – – 350.00 TOTAL – – – – £ 2660.50
1350×700 chamber 3500 depth to invert excavation, support, backfilling and disposal – – – – – 430.00 concrete base – – – – – 140.00 brickwork chamber – – – – – 2250.00 access shaft – – – – – 2040.00 reducing slab – – – – – 140.00 concrete cover slab – – – – – 80.00 concrete benching and channels – – – – – 40.00 step irons – – – – – 110.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 5580.00
Labour Total hours £ £ £ rate £
1350×700 chamber 4500 depth to invert excavation, support, backfilling and disposal – – – – – 550.00 concrete base – – – – – 140.00 brickwork chamber – – – – – 2895.00 access shaft – – – – – 2665.00 reducing slab – – – – – 140.00 concrete cover slab – – – – – 80.00 concrete benching and channels – – – – – 40.00 step irons – – – – – 145.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 7005.00
Precast concrete construction Design criteria used in models: * circular shafts * 150mm plain concrete C15/20 surround * 225mm plain concrete C20/20 base slab * precast reducing slab * precast top slab * maximum height of working chamber 2.0m above benching
* 750mm diameter access shaft * plain concrete C15/20 benching, 150mm clay main channel longitudinally and two 100 branch channels
* step irons at 300mm centres, doubled if depth to invert exceeds 3000mm
* heavy duty manhole cover and frame * in manholes over 6m deep, landings at maximum intervals
675 diameter × 500 depth to invert excavation, support, backfilling and disposal – – – – – 27.00 concrete base – – – – – 50.00 main chamber rings – – – – – 20.00 cover slab – – – – – 45.00 concrete benching and channels – – – – – 12.10 concrete surround – – – – – 50.00 step irons – – – – – 15.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 569.10
675 diameter × 750 depth to invert excavation, support, backfilling and disposal – – – – – 35.00 concrete base – – – – – 50.00 main chamber rings – – – – – 25.00 cover slab – – – – – 45.00 concrete benching and channels – – – – – 12.10 concrete surround – – – – – 70.00 step irons – – – – – – access cover and frame – – – – – 350.00 TOTAL – – – – £ 607.10
Labour Total hours £ £ £ rate £
MANHOLES – cont
Precast concrete construction – cont 675 diameter × 1000 depth to invert
excavation, support, backfilling and disposal – – – – – 42.50 concrete base – – – – – 50.00 main chamber rings – – – – – 32.50 cover slab – – – – – 45.00 concrete benching and channels – – – – – 12.10 step irons – – – – – – concrete surround – – – – – 100.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 657.10
675 diameter × 1250 depth to invert excavation, support, backfilling and disposal – – – – – 52.00 concrete base – – – – – 50.00 main chamber rings – – – – – 37.50 cover slab – – – – – 45.00 concrete benching and channels – – – – – 12.10 concrete surround – – – – – 120.00 step irons – – – – – 32.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 698.60
900 diameter × 750 depth to invert excavation, support, backfilling and disposal – – – – – 115.00 concrete base – – – – – 100.00 main chamber rings – – – – – 41.30 cover slab – – – – – 60.00 concrete benching and channels – – – – – 30.00 concrete surround – – – – – 100.00 step irons – – – – – – access cover and frame – – – – – 350.00 TOTAL – – – – £ 727.80
900 diameter × 1000 depth to invert excavation, support, backfilling and disposal – – – – – 150.00 concrete base – – – – – 100.00 main chamber rings – – – – – 55.07 cover slab – – – – – 60.00 concrete benching and channels – – – – – 30.00 concrete surround – – – – – 130.00 step irons – – – – – – access cover and frame – – – – – 350.00 TOTAL – – – – £ 806.57
Labour Total hours £ £ £ rate £
900 diameter × 1500 depth to invert excavation, support, backfilling and disposal – – – – – 215.00 concrete base – – – – – 100.00 main chamber rings – – – – – 65.07 cover slab – – – – – 60.00 concrete benching and channels – – – – – 30.00 concrete surround – – – – – 190.00 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 941.82
1200 diameter × 1500 depth to invert excavation, support, backfilling and disposal – – – – – 275.00 concrete base – – – – – 170.00 main chamber rings – – – – – 135.00 concrete benching and channels – – – – – 38.15 cover slab – – – – – 78.00 concrete surround – – – – – 260.00 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1351.15
1200 diameter × 2000 depth to invert excavation, support, backfilling and disposal – – – – – 380.00 concrete base – – – – – 170.00 main chamber rings – – – – – 18.00 cover slab – – – – – 78.00 concrete benching and channels – – – – – 38.15 concrete surround – – – – – 340.00 step irons – – – – – 60.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1434.15
1200 diameter × 2500 depth to invert excavation, support, backfilling and disposal – – – – – 450.00 concrete base – – – – – 170.00 main chamber rings – – – – – 225.00 cover slab – – – – – 78.00 concrete benching and channels – – – – – 38.15 concrete surround – – – – – 430.00 step irons – – – – – 75.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 1816.15
1200 diameter × 3000 depth to invert excavation, support, backfilling and disposal – – – – – 555.50 concrete base – – – – – 170.00 main chamber rings – – – – – 270.00 cover slab – – – – – 78.00 concrete benching and channels – – – – – 38.15 concrete surround – – – – – 510.00 step irons – – – – – 90.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 2061.65
Labour Total hours £ £ £ rate £
MANHOLES – cont
Precast concrete construction – cont 1800 diameter × 1500 depth to invert
excavation, support, backfilling and disposal – – – – – 415.00 concrete base – – – – – 380.00 main chamber rings – – – – – 405.00 cover slab – – – – – 215.00 concrete benching and channels – – – – – 85.85 concrete surround – – – – – 380.00 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 2275.85
1800 diameter × 2000 depth to invert excavation, support, backfilling and disposal – – – – – 550.00 concrete base – – – – – 380.00 main chamber rings – – – – – 540.00 cover slab – – – – – 215.00 concrete benching and channels – – – – – 85.85 concrete surround – – – – – 510.00 step irons – – – – – 60.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 2690.85
1800 diameter × 2500 depth to invert excavation, support, backfilling and disposal – – – – – 650.00 concrete base – – – – – 380.00 main chamber rings – – – – – 675.00 cover slab – – – – – 215.00 concrete benching and channels – – – – – 85.85 concrete surround – – – – – 640.00 step irons – – – – – 75.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 3070.85
1800 diameter × 3000 depth to invert excavation, suport, backfilling and disposal – – – – – 830.00 concrete base – – – – – 380.00 main chamber rings – – – – – 815.00 cover slab – – – – – 215.00 concrete surround – – – – – 770.00 concrete benching and channels – – – – – 85.85 step irons – – – – – 90.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 3535.85
Labour Total hours £ £ £ rate £
1800 diameter × 3500 depth to invert excavation, support, backfilling and disposal – – – – – 950.00 concrete base – – – – – 380.00 access shaft – – – – – 300.00 main chamber rings – – – – – 950.00 reducing slab – – – – – 251.00 cover slab – – – – – 60.00 concrete benching and channels – – – – – 85.85 concrete surround – – – – – 900.00 step irons – – – – – 115.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 4446.85
1800 diameter × 4000 depth to invert excavation, support, backfilling and disposal – – – – – 1100.00 concrete base – – – – – 380.00 access shaft – – – – – 345.00 main chamber rings – – – – – 1055.00 reducing slab – – – – – 251.00 cover slab – – – – – 60.00 concrete benching and channels – – – – – 85.85 concrete surround – – – – – 1030.00 step irons – – – – – 125.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 4781.85
2400 diameter × 1500 depth to invert excavation, support, backfilling and disposal – – – – – 570.00 concrete base – – – – – 680.00 main chamber rings – – – – – 1035.00 cover slab – – – – – 615.00 concrete benching and channels – – – – – 155.00 concrete surround – – – – – 510.00 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 3960.00
2400 diameter × 3000 depth to invert excavation, support, backfilling and disposal – – – – – 1140.00 concrete base – – – – – 680.00 main chamber rings – – – – – 2075.00 cover slab – – – – – 615.00 concrete benching and channels – – – – – 155.00 concrete surround – – – – – 1030.00 step irons – – – – – 90.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 6135.00
Labour Total hours £ £ £ rate £
MANHOLES – cont
Precast concrete construction – cont 2400 diameter × 4500 depth to invert
excavation, support, backfilling and disposal – – – – – 1500.00 concrete base – – – – – 680.00 access shaft – – – – – 385.00 main chamber rings – – – – – 3100.00 reducing slab – – – – – 705.00 cover slab – – – – – 60.00 concrete benching and channels – – – – – 155.00 concrete surround – – – – – 1540.00 step irons – – – – – 147.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 8622.00
2700 diameter × 1500 depth to invert excavation, support, backfilling and disposal – – – – – 650.00 concrete base – – – – – 870.00 main chamber rings – – – – – 1200.00 cover slab – – – – – 1100.00 concrete benching and channels – – – – – 195.00 concrete surround – – – – – 580.00 step irons – – – – – 45.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 4990.00
2700 diameter × 3000 depth to invert excavation, support, backfilling and disposal – – – – – 1310.00 concrete base – – – – – 870.00 main chamber rings – – – – – 2400.00 cover slab – – – – – 1100.00 concrete benching and channels – – – – – 195.00 concrete surround – – – – – 1150.00 step irons – – – – – 90.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 7465.00
2700 diameter × 4500 depth to invert excavation, support, backfilling and disposal – – – – – 1900.00 concrete base – – – – – 870.00 access shaft – – – – – 385.00 main chamber rings – – – – – 3500.00 reducing slab – – – – – 1155.00 cover slab – – – – – 60.00 concrete benching and channels – – – – – 195.00 concrete surround – – – – – 1730.00 step irons – – – – – 147.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 10292.00
Labour Total hours £ £ £ rate £
3000 diameter × 3000 depth to invert excavation, support, backfilling and disposal – – – – – 1500.00 concrete base – – – – – 1070.00 main chamber rings – – – – – 3375.00 cover slab – – – – – 1215.00 concrete benching and channels – – – – – 240.00 concrete surround – – – – – 1280.00 step irons – – – – – 90.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 9120.00
3000 diameter × 4500 depth to invert excavation, support, backfilling and disposal – – – – – 2250.00 concrete base – – – – – 1070.00 access shaft – – – – – 385.00 main chamber rings – – – – – 4500.00 reducing slab – – – – – 1500.00 cover slab – – – – – 60.00 concrete benching and channels – – – – – 240.00 concrete surround – – – – – 1920.00 step irons – – – – – 147.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 12422.00
3000 diameter × 6000 depth to invert excavation, support, backfilling and disposal – – – – – 3000.00 concrete base – – – – – 1070.00 access shaft – – – – – 515.00 main chamber rings – – – – – 6700.00 reducing slab – – – – – 1500.00 cover slab – – – – – 60.00 concrete benching and channels – – – – – 240.00 concrete surround – – – – – 2560.00 step irons – – – – – 175.00 access cover and frame – – – – – 350.00 TOTAL – – – – £ 16170.00
BACKDROPS TO MANHOLES
Clayware vertical pipe complete with rest bend at base and tumbling bay junction to main drain complete with stopper; concrete grade C20surround, 150mm thick; additional excavation and disposal 100 pipe
1.15m to invert – – – – nr 110.00 2.15m to invert – – – – nr 140.00 3.15m to invert – – – – nr 165.00 4.15m to invert – – – – nr 200.50
Labour Total hours £ £ £ rate £
BACKDROPS TO MANHOLES – cont
Clayware vertical pipe complete with rest bend at base and tumbling bay junction to main drain complete with stopper – cont 150 pipe
1.15m to invert – – – – nr 165.00 2.15m to invert – – – – nr 205.00 3.15m to invert – – – – nr 242.00 4.15m to invert – – – – nr 285.00
225 pipe 1.15m to invert – – – – nr 335.00 2.15m to invert – – – – nr 375.00 3.15m to invert – – – – nr 425.00 4.15m to invert – – – – nr 495.00
GULLIES
Vitrified clay; set in concrete grade C20, 150mm thick; additional excavation and disposal Road gulley
450mm diameter × 900mm deep, 100mm or 150mm outlet; cast iron road gulley grating and frame group 4, 434×434mm, on Class B engineering brick seating 0.50 31.43 1.13 525.15 nr 557.71
Yard gulley (mud); trapped with rodding eye; galvanized bucket; stopper
225mm diameter, 100mm diameter outlet, cast iron hinged grate and frame 0.30 18.86 0.68 272.47 nr 292.01
Grease interceptors; internal access and bucket 600× 450mm, metal tray and lid, square hopper with horizontal inlet 0.35 22.00 0.79 1443.11 nr 1465.90
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; cast iron road gulley grating and frame group 4, 434×434mm, on Class B engineering brick seating 0.50 31.43 1.13 446.56 nr 479.12 450mm diameter × 900mm deep; cast iron road gulley grating and frame group 4, 434×434mm, on Class B engineering brick seating 0.54 33.94 1.22 461.77 nr 496.93 450mm diameter × 1050mm deep, cast iron road gulley grating and frame group 4, 434×434mm, on Class B engineering brick seating 0.58 36.46 1.31 471.81 nr 509.58
Labour Total hours £ £ £ rate £
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) 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 6.29 3.98 – m 10.27 0.50-0.75m2 0.12 7.54 4.77 – m 12.31 0.75-1.00m2 0.14 8.80 5.57 – m 14.37 1.00-1.50m2 0.17 10.69 6.76 – m 17.45 1.50-2.00m2 0.20 12.57 7.95 – m 20.52
Filling French and rubble drains with graded material 20mm stone aggregate; PC £4.45/t 0.30 18.86 11.93 27.26 m3 58.05 broken brick/concrete rubble; PC £3.42/t 0.29 18.23 11.53 29.27 m3 59.03
Excavation of rectangular section ditches; unlined; cross-sectional area
0.25-0.50m² 0.11 6.91 4.29 – m 11.20 0.50-0.75m² 0.13 8.17 5.07 – m 13.24 0.75-1.00m² 0.16 10.06 6.24 – m 16.30 1.00-1.50m² 0.20 12.57 7.80 – m 20.37 1.50-2.00m² 0.25 15.71 9.75 – m 25.46
Excavation of rectangular ditches; lined with precast concrete slabs; cross-sectional area
0.25-0.50m² 0.15 9.43 6.22 14.27 m 29.92 0.50-0.75m² 0.25 15.71 10.38 20.94 m 47.03 0.75-1.00m² 0.36 22.63 14.95 29.70 m 67.28 1.00-1.50m² 0.40 25.14 16.61 41.88 m 83.63 1.50-2.00m² 0.45 28.29 18.69 59.16 m 106.14
Excavation of vee section ditches; unlined; cross-sectional area
0.25-0.50m² 0.10 6.29 4.46 – m 10.75 0.50-0.75m² 0.12 7.54 5.33 – m 12.87 0.75-1.00m² 0.14 8.80 6.24 – m 15.04 1.00-1.50m² 0.18 11.31 8.01 – m 19.32 1.50-2.00m² 0.22 13.83 9.79 – m 23.62
Labour Total hours £ £ £ rate £
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 9.43 0.67 110.01 m 120.11 in trenches, depth not exceeding 1.5m 0.31 19.49 13.76 110.01 m 143.26 in trenches, depth 1.5-2m 0.43 27.03 19.10 110.01 m 156.14 in trenches, depth 2-2.5m 0.51 32.06 22.65 110.01 m 164.72 in trenches, depth 2.5-3m 0.60 37.72 26.65 110.01 m 174.38
Sectional corrugated metal culverts, nominal internal diameter exceeding 1.5m; 1600mm nominal internal diameter, 1.6mm thick
not in trenches 0.21 13.20 0.94 176.49 m 190.63 in trenches, depth 1.5-2m 0.44 27.66 19.55 176.49 m 223.70 in trenches, depth 2-2.5m 0.56 35.20 24.88 176.49 m 236.57 in trenches, depth 2.5-3m 0.68 42.74 30.21 176.49 m 249.44 in trenches, depth 3-3.5m 0.82 51.55 36.44 176.49 m 264.48
Sectional corrugated metal culverts, nominal internal diameter exceeding 1.5m; 2000mm nominal internal diameter, 1.6mm thick
not in trenches 0.26 16.34 1.17 373.59 m 391.10 in trenches, depth 2-2.5m 0.46 28.92 20.45 373.59 m 422.96 in trenches, depth 2.5-3m 0.60 37.72 26.65 373.59 m 437.96 in trenches, depth 3-3.5m 0.75 47.15 33.31 373.59 m 454.05 in trenches, depth 3.5-4m 0.93 58.46 41.32 373.59 m 473.37
Sectional corrugated metal culverts, nominal internal diameter exceeding 1.5m; 2200mm nominal internal diameter, 1.6mm thick
not in trenches 0.33 20.74 1.48 472.40 m 494.62 in trenches, depth 2.5-3m 0.64 40.23 28.43 472.40 m 541.06 in trenches, depth 3-3.5m 0.77 48.40 34.21 472.40 m 555.01 in trenches, depth 3.5-4m 1.02 64.12 45.33 472.40 m 581.85 in trenches, depth exceeding 4m 1.32 82.98 58.64 472.40 m 614.02
OTHER PIPEWORK ANCILLARIES
Notes Refer to Section G (Concrete and concrete ancillaries) for costs relevant to the construction of Headwall Structure.
