ABSTRACT
Excavation of soft spots, backfilling concrete grade C15P 0.30 12.59 15.82 82.91 m3 111.32
SPECIAL PIPE LAYING METHODS There are many factors, apart from design consideration, which influence the cost of pipe jacking, so that it is only possible to give guide prices for a sample of the work involved. For more reliable estimates it is advisable to seek the advice of a Specialist Contractor. The main cost considerations are: * the nature of the ground * length of drive * location * presence of water * depth below surface
Labour Total hours £ £ £ rate £
SPECIAL PIPE LAYING METHODS – cont Provision of all plant, equipment and labour establishing
thrust pit; 6m × 4m × 8m deep – – – – item 30000.00 reception pit; 4m × 4m × 8m deep – – – – item 22000.00 mobilize and set up pipe jacking equipment – – – – item 44000.00
Pipe jacking, excluding the cost of non-drainage materials; concrete pipes BS 5911 Part 1 Class 120 with rebated joints, steel reinforcing band; length not exceeding 50m; in sand and gravel
900mm nominal bore – – – – m 2070.00 1200mm nominal bore – – – – m 2587.50 1500mm nominal bore – – – – m 1932.50 1800mm nominal bore – – – – m 2185.50
BEDS
Imported sand 100mm deep bed for pipes nominal bore
100mm 0.02 0.84 0.74 1.57 m 3.15 150mm 0.02 0.84 0.74 1.70 m 3.28 225mm 0.03 1.26 1.11 1.98 m 4.35 300mm 0.04 1.68 1.48 2.07 m 5.23
150mm deep bed for pipes nominal bore 150mm 0.06 2.52 2.22 2.56 m 7.30 225mm 0.07 2.94 2.59 2.96 m 8.49 300mm 0.09 3.78 3.33 3.14 m 10.25 400mm 0.12 5.04 4.44 3.51 m 12.99 450mm 0.14 5.88 5.18 4.11 m 15.17 600mm 0.17 7.13 6.30 5.08 m 18.51 750mm 0.19 7.97 7.04 5.68 m 20.69 900mm 0.21 8.81 7.78 6.65 m 23.24 1200mm 0.25 10.49 9.26 7.82 m 27.57
Imported granular material 100mm deep bed for pipes nominal bore
100mm 0.02 0.84 0.74 1.62 m 3.20 150mm 0.03 1.26 1.11 1.75 m 4.12 225mm 0.04 1.68 1.48 2.01 m 5.17 300mm 0.05 2.10 1.85 2.15 m 6.10
150mm deep bed for pipes nominal bore 150mm 0.06 2.52 2.22 2.62 m 7.36 225mm 0.08 3.36 2.96 3.02 m 9.34 300mm 0.10 4.20 3.70 3.22 m 11.12 400mm 0.13 5.46 4.81 3.63 m 13.90 450mm 0.15 6.30 5.55 4.19 m 16.04 600mm 0.18 7.55 6.67 5.22 m 19.44 750mm 0.20 8.39 7.41 5.82 m 21.62 900mm 0.22 9.23 8.15 6.83 m 24.21 1200mm 0.26 10.91 9.63 8.02 m 28.56
Labour Total hours £ £ £ rate £
Mass concrete 100mm deep bed for pipes nominal bore
100mm 0.07 2.94 2.59 6.41 m 11.94 150mm 0.08 3.36 2.96 6.95 m 13.27 225mm 0.09 3.78 3.33 8.03 m 15.14 300mm 0.11 4.62 4.07 8.57 m 17.26
150mm deep bed for pipes nominal bore 100mm 0.10 4.20 3.70 9.64 m 17.54 150mm 0.12 5.04 4.44 10.43 m 19.91 225mm 0.14 5.88 5.18 12.04 m 23.10 300mm 0.16 6.72 5.92 12.85 m 25.49 400mm 0.19 7.97 7.04 14.42 m 29.43 450mm 0.21 8.81 7.78 16.86 m 33.45 600mm 0.24 10.07 8.89 20.85 m 39.81 750mm 0.26 10.91 9.63 23.25 m 43.79 900mm 0.28 11.75 10.37 27.28 m 49.40 1200mm 0.32 13.43 11.85 32.07 m 57.35
HAUNCHES The following items allow for dressing the haunching material half-way up the pipe barrel for the full width of the bed and then dressing in triangular fashion to the crown of the pipe. The items exclude the drain bed.
