ABSTRACT
NOTES The unit rates in this Section are based on nett measurements and appropriate adjustments should be made for unmeasured excess (e.g. additional blinding thickness as a result of ground conditions). The unit rates for the provision of concrete are based on ready mixed concrete in full loads delivered to site within 5 miles (8km) of the concrete mixing plant and include an allowance for wastage prior to placing. This section assumes optimum outputs of an efficiently controlled pour with no delays caused by out of sequence working and no abnormal conditions that would affect continuity of work. RESOURCES - LABOUR Concrete gang 1 ganger or chargehand (skill rate 4) 14.28 2 skilled operatives (skill rate 4) 26.64 4 unskilled operatives (general) 49.76 1 plant operator (skill rate 3) - 25% of time 4.05 Total Gang Rate / Hour £ 94.73 RESOURCES - MATERIALS The following costs do not reflect in the rates and should be considered separately Delivery to site for each additional mile from the concrete plant further than 5 miles (8km) - - - 1.26 m3 1.26 Mix design, per trial mix - - - 173.07 mix 173.07 Part loads, per m3 below full load - - - 26.50 m3 26.50 Waiting time ( in excess of 6 mins/m3 'norm' discharge time) - - - 55.23 hr 55.23 Making and testing concrete cube 0.69 8.56 - - nr 8.56 Pumping from ready mix truck to point of placing at the rate of 25 m3 / hour 0.11 1.31 1.87 - m3 3.18 Pumping from ready mix truck to point of placing at the rate of 45 m3 / hour 0.05 0.63 1.97 - m3 2.59 RESOURCES - PLANT Concrete 10t Crane (50% of time) 13.53 1.00 m3 concrete skip (50% of time) 0.50 11.30 m3/min compressor, 2 tool 16.89 four 54 mm poker vibrators 5.24 Total Rate / Hour £ 36.16
Item
Gang hours
Labour £
Plant £
Material £ Unit
Total rate £
PROVISION OF CONCRETE Standard mix; cement to BS EN 197-1 Type ST1 - - - 83.22 m3 83.22 Type ST2 - - - 84.83 m3 84.83 Type ST3 - - - 86.65 m3 86.65 Type ST4 - - - 88.34 m3 88.34 Type ST5 - - - 90.48 m3 90.48 Standard mix; sulphate resisting cement to BS 4027 Type ST1 - - - 93.03 m3 93.03 Type ST2 - - - 94.64 m3 94.64 Type ST3 - - - 96.46 m3 96.46 Type ST4 - - - 98.16 m3 98.16 Type ST5 - - - 100.30 m3 100.30 Designed mix; cement to BS EN 197-1 Grade C7.5 10 mm aggregate - - - 84.07 m3 84.07 20 mm aggregate - - - 79.17 m3 79.17 40 mm aggregate - - - 82.84 m3 82.84 Grade C10 10 mm aggregate - - - 85.25 m3 85.25 20 mm aggregate - - - 80.35 m3 80.35 40 mm aggregate - - - 83.90 m3 83.90 Grade C15 10 mm aggregate - - - 87.05 m3 87.05 20 mm aggregate - - - 82.31 m3 82.31 40 mm aggregate - - - 85.95 m3 85.95 Grade C20 10 mm aggregate - - - 88.53 m3 88.53 20 mm aggregate - - - 83.70 m3 83.70 40 mm aggregate - - - 87.34 m3 87.34 Grade C25 10 mm aggregate - - - 89.09 m3 89.09 20 mm aggregate - - - 85.11 m3 85.11 40 mm aggregate - - - 88.21 m3 88.21 Grade C30 10 mm aggregate - - - 90.55 m3 90.55 20 mm aggregate - - - 86.54 m3 86.54 40 mm aggregate - - - 89.55 m3 89.55 Grade C40 10 mm aggregate - - - 94.83 m3 94.83 20 mm aggregate - - - 90.65 m3 90.65 Grade C50 10 mm aggregate - - - 98.52 m3 98.52 20 mm aggregate - - - 95.52 m3 95.52 Grade C60 10 mm aggregate - - - 99.68 m3 99.68 20 mm aggregate - - - 100.89 m3 100.89 Designed mix; sulphate resisting cement to BS 4027 Grade C7.5 10 mm aggregate - - - 93.66 m3 93.66 20 mm aggregate - - - 88.76 m3 88.76 40 mm aggregate - - - 92.43 m3 92.43
Item
Gang hours
Labour £
Plant £
Material £ Unit
Total rate £
PROVISION OF CONCRETE – cont’d Designed mix; sulphate resisting cement to BS 4027 – cont’d Grade C10 10 mm aggregate - - - 94.99 m3 94.99 20 mm aggregate - - - 90.10 m3 90.10 40 mm aggregate - - - 93.65 m3 93.65 Grade C15 10 mm aggregate - - - 96.96 m3 96.96 20 mm aggregate - - - 92.22 m3 92.22 40 mm aggregate - - - 95.86 m3 95.86 Grade C20 10 mm aggregate - - - 98.53 m3 98.53 20 mm aggregate - - - 93.71 m3 93.71 40 mm aggregate - - - 97.34 m3 97.34 Grade C25 10 mm aggregate - - - 99.43 m3 99.43 20 mm aggregate - - - 95.45 m3 95.45 40 mm aggregate - - - 98.54 m3 98.54 Grade C30 10 mm aggregate - - - 101.04 m3 101.04 20 mm aggregate - - - 97.03 m3 97.03 40 mm aggregate - - - 100.04 m3 100.04 Prescribed mix; cement to BS EN 197-1 Grade C7.5 10 mm aggregate - - - 88.07 m3 88.07 20 mm aggregate - - - 82.94 m3 82.94 40 mm aggregate - - - 86.79 m3 86.79 Grade C10 10 mm aggregate - - - 89.30 m3 89.30 20 mm aggregate - - - 84.18 m3 84.18 40 mm aggregate - - - 87.90 m3 87.90 Grade C15 10 mm aggregate - - - 91.20 m3 91.20 20 mm aggregate - - - 86.23 m3 86.23 40 mm aggregate - - - 90.04 m3 90.04 Grade C20 10 mm aggregate - - - 92.75 m3 92.75 20 mm aggregate - - - 87.69 m3 87.69 40 mm aggregate - - - 91.50 m3 91.50 Grade C25 10 mm aggregate - - - 93.34 m3 93.34 20 mm aggregate - - - 89.17 m3 89.17 40 mm aggregate - - - 92.41 m3 92.41 Grade C30 10 mm aggregate - - - 94.86 m3 94.86 20 mm aggregate - - - 90.66 m3 90.66 40 mm aggregate - - - 93.81 m3 93.81 Grade C40 10 mm aggregate - - - 99.34 m3 99.34 20 mm aggregate - - - 94.96 m3 94.96 Grade C50 10 mm aggregate - - - 103.21 m3 103.21 20 mm aggregate - - - 100.07 m3 100.07 Grade C60 10 mm aggregate - - - 104.42 m3 104.42 20 mm aggregate - - - 105.69 m3 105.69
Item
Gang hours
Labour £
Plant £
Material £ Unit
Total rate £
Prescribed mix; sulphate resisting cement to BS 4027 Grade C7.5 10 mm aggregate - - - 97.66 m3 97.66 20 mm aggregate - - - 92.53 m3 92.53 40 mm aggregate - - - 96.38 m3 96.38 Grade C10 10 mm aggregate - - - 99.05 m3 99.05 20 mm aggregate - - - 93.92 m3 93.92 40 mm aggregate - - - 97.64 m3 97.64 Grade C15 10 mm aggregate - - - 101.11 m3 101.11 20 mm aggregate - - - 96.14 m3 96.14 40 mm aggregate - - - 99.95 m3 99.95 Grade C20 10 mm aggregate - - - 102.75 m3 102.75 20 mm aggregate - - - 97.69 m3 97.69 40 mm aggregate - - - 101.50 m3 101.50 Grade C25 10 mm aggregate - - - 103.67 m3 103.67 20 mm aggregate - - - 99.50 m3 99.50 40 mm aggregate - - - 102.74 m3 102.74 Grade C30 10 mm aggregate - - - 105.35 m3 105.35 20 mm aggregate - - - 101.15 m3 101.15 40 mm aggregate - - - 104.30 m3 104.30 PLACING OF CONCRETE; MASS Blinding; thickness ne 150 mm 0.18 17.05 0.38 - m3 17.43 150 - 300 mm 0.16 15.16 1.11 - m3 16.26 300 - 500 mm 0.14 13.26 1.83 - m3 15.09 exceeding 500 mm 0.12 11.37 2.55 - m3 13.92 Bases, footings, pile caps and ground slabs; thickness ne 150 mm 0.20 18.94 7.23 - m3 26.18 150 - 300 mm 0.17 16.10 6.16 - m3 22.27 300 - 500 mm 0.15 14.21 5.44 - m3 19.65 exceeding 500 mm 0.14 13.26 5.06 - m3 18.32 ADD to the above for placing against an excavated surface 0.03 2.37 0.89 - m3 3.26 Walls; thickness ne 150 mm 0.21 19.89 7.61 - m3 27.50 150 - 300 mm 0.15 14.21 5.45 - m3 19.65 300 - 500 mm 0.13 12.31 4.72 - m3 17.03 exceeding 500 mm 0.12 11.37 4.34 - m3 15.71 ADD to the above for placing against an excavated surface 0.03 2.84 1.11 - m3 3.95 Other concrete forms plinth 1000 x 1000 x 600 mm 0.33 31.26 11.95 - m3 43.21 plinth 1500 x 1500 x 750 mm 0.25 23.68 9.06 - m3 32.74 plinth 2000 x 2000 x 600 mm 0.20 18.94 7.23 - m3 26.18 surround to precast concrete manhole chambers 200 mm thick 0.29 27.47 10.50 - m3 37.97
Item
Gang hours
Labour £
Plant £
Material £ Unit
Total rate £
PLACING OF CONCRETE; REINFORCED Bases, footings, pile caps and ground slabs; thickness ne 150 mm 0.21 19.89 7.61 - m3 27.50 150 - 300 mm 0.18 17.05 6.51 - m3 23.56 300 - 500 mm 0.16 15.16 5.78 - m3 20.94 exceeding 500 mm 0.15 14.21 5.44 - m3 19.65 Suspended slabs; thickness ne 150 mm 0.27 25.58 9.78 - m3 35.36 150 - 300 mm 0.21 19.89 7.61 - m3 27.50 300 - 500 mm 0.19 18.00 6.89 - m3 24.89 exceeding 500 mm 0.19 18.00 6.89 - m3 24.89 Walls; thickness ne 150 mm 0.29 27.47 10.50 - m3 37.97 150 - 300 mm 0.22 20.84 7.96 - m3 28.80 300 - 500 mm 0.20 18.94 7.23 - m3 26.18 exceeding 500 mm 0.20 18.94 7.23 - m3 26.18 Columns and piers; cross-sectional area ne 0.03 m2 0.50 47.36 18.08 - m3 65.44 0.03 - 0.10 m2 0.40 37.89 14.47 - m3 52.36 0.10 - 0.25 m2 0.35 33.15 12.67 - m3 45.83 0.25 - 1.00 m2 0.35 33.15 12.67 - m3 45.83 exceeding 1 m2 0.28 26.52 10.12 - m3 36.65 Beams; cross-sectional area ne 0.03 m2 0.50 47.36 18.08 - m3 65.44 0.03 - 0.10 m2 0.40 37.89 14.47 - m3 52.36 0.10 - 0.25 m2 0.35 33.15 12.67 - m3 45.83 0.25 - 1.00 m2 0.35 33.15 12.67 - m3 45.83 exceeding 1 m2 0.28 26.52 10.12 - m3 36.65 Casings to metal sections; cross-sectional area ne 0.03 m2 0.47 44.52 17.01 - m3 61.53 0.03 - 0.10 m2 0.47 44.52 17.01 - m3 61.53 0.10 - 0.25 m2 0.40 37.89 14.46 - m3 52.35 0.25 - 1.00 m2 0.40 37.89 14.46 - m3 52.35 exceeding 1 m2 0.35 33.15 12.67 - m3 45.83 PLACING OF CONCRETE; PRESTRESSED Suspended slabs; thickness ne 150 mm 0.28 26.52 10.12 - m3 36.65 150 - 300 mm 0.22 20.84 7.96 - m3 28.80 300 - 500 mm 0.20 18.94 7.23 - m3 26.18 exceeding 500 mm 0.19 18.00 6.89 - m3 24.89 Beams; cross-sectional area ne 0.03 m2 0.50 47.36 18.08 - m3 65.44 0.03 - 0.10 m2 0.40 37.89 14.47 - m3 52.36 0.10 - 0.25 m2 0.35 33.15 12.67 - m3 45.83 0.25 - 1.00 m2 0.35 33.15 12.67 - m3 45.83 exceeding 1 m2 0.28 26.52 10.12 - m3 36.65
