ABSTRACT
RESOURCESLABOUR
Drains/sewers/culverts gang (small bore)
1 ganger/chargehand (skill rate 4)—50% of time
5.33
1 skilled operative (skill rate 4)
10.16
2 unskilled operatives (general)
19.04
1 plant operator (skill rate 3)
12.38
Total Gang Rate/Hour £ 46.91 Drains/sewers/culverts gang (large bore)
1 ganger/chargehand (skill rate 4)—50% of time
5.33
1 skilled operative (skill rate 4)
10.16
2 unskilled operatives (general)
19.04
1 plant operator (skill 12.38
rate 3)—30% of time
Total Gang Rate/Hour 50.62 Gullies gang 1 ganger/chargehand (skill rate 4)—50% of time
5.33
1 skilled operative (skill rate 4)
10.16
2 unskilled operatives (general)
19.04
Total Gang Rate/Hour £ 34.53 RESOURCESPLANT
Drains/sewers/culverts gang (small bore)
0.4 m3 hydraulic excavator
15.20
2 t dumper-30% of time
0.96
360 mm compaction plate-30% of time
0.41
2.80 m3/min compressor, 2 tool30% of time
1.14
disc saw-30% of time 0.36 extra 15 ft/50 m hose30% of time
0.07
small pump-30% of time
0.49
Total Gang Rate/Hour £ 18.64 Note: in addition to the above are the following allowances for trench struts/props/sheeting, assuming the need for close boarded earth support:
average 1.00 m deep – 0.92 – m 0.92 average 1.50 m deep – 1.02 – m 1.02 average 2.00 m deep – 1.19 – m 1.19 average 2.50 m deep – 1.45 – m 1.45 average 3.00 m deep – 1.80 – m 1.80 average 3.50 m deep – 2.22 – m 2.22
Note: excavation in hard materials as above but with the addition of breaker attachments to the excavator as follows:
generally: BRH91 (141 kg)
£ 3.19
reinforced concrete; BRH125 (310 kg)
£ 4.50
Drains/sewers/culverts gang (large bore)
i.e. greater than 700 mm bore
0.4 m3 hydraulic excavator
15.20
2 t dumper-30% of time
0.96
2.80 m3/min compressor, 2 tool30% of time
1.14
compaction plate/roller-30% of time
0.41
disc saw-30% of time 0.26 small pump-30% of time
0.49
10 t crawler crane30% of time
6.15
TOTAL GANG RATE/HOUR
£ 24.62
Gullies 2 t dumper-30% of time
0.96
Stihl disc saw-30% of time
0.26
Total Gang Rate/Hour £ 1.22 RESOURCESMATERIALS
For the purposes of bedding widths for pipe bedding materials, trenches have been taken as exceeding 1.50
generally 150 mm narrower than those given here so that the rates need to be reduced proportionately. DRAINS AND SERVICE DUCTS (EXCLUDING FILTER DRAINS, NARROW FILTER DRAINS AND FIN DRAINS)
Vitrified clay pipes to BS 65, plain ends with push-fit polypropylene flexible couplings
150 mm diameter drain or sewer in trench, depth to invert
average 1.00 m deep 0.17 7.97 6.04 10.76 m 24.77 average 1.50 m deep 0.19 8.91 6.65 10.76 m 26.32 average 2.00 m deep 0.22 10.32 7.82 10.76 m 28.90 average 2.50 m deep 0.26 12.20 9.55 10.76 m 32.51 average 3.00 m deep 0.34 15.95 12.02 10.76 m 38.74 average 3.50 m deep 0.42 19.70 14.85 10.76 m 45.31 Extra for Type N sand bed 650×100 mm
0.04 1.88 1.42 0.90 m 4.20
Type T sand surround 650 wide×100 mm
0.08 3.75 2.83 2.16 m 8.75
Type F granular bed 650×100 mm
0.05 2.35 1.78 1.25 m 5.37
Type S granular surround 650 wide×100 mm
0.16 7.51 5.67 2.98 m 16.15
Type A concrete bed 650×100 mm
0.11 5.16 3.68 4.55 m 13.38
Type B 100 mm concrete bed and haunch
0.24 11.26 8.03 3.88 m 23.17
Type Z concrete surround 650 wide×100 mm
0.22 10.32 7.36 10.89 m 28.57
rate £ 225 mm diameter drain or sewer in trench, depth to invert
average 1.50 m deep
0.20 9.38 4.43 30.61 m 44.42
average 2.00 m deep
0.24 11.26 8.51 30.61 m 50.38
average 2.50 m deep
0.28 13.13 9.91 30.61 m 53.66
average 3.00 m deep
0.35 16.42 12.36 30.61 m 59.39
average 3.50 m deep
0.44 20.64 15.54 30.61 m 66.80
average 4.00 m deep
0.56 26.27 19.78 30.61 m 76.66
Extra for Type N sand bed 750×150 mm
0.12 5.63 4.01 1.56 m 11.20
Type T sand surround 750 wide×150 mm
0.24 11.26 8.03 3.86 m 23.14
Type F granular bed 750×150 mm
0.13 6.10 4.35 2.14 m 12.59
Type S granular surround 750 wide×150 mm
0.24 11.26 8.03 5.31 m 24.60
Type A concrete bed 750×150 mm
0.19 8.91 6.35 7.87 m 23.14
Type B 150 mm concrete bed and haunch
0.29 13.60 9.70 6.06 m 29.37
Type Z concrete surround 750 wide×150 mm
0.36 16.89 12.04 19.52 m 48.45
300 mm diameter drain or sewer in trench, depth
m deep
average 2.00 m deep
0.26 12.20 9.23 51.99 m 73.42
average 2.50 m deep
0.30 14.07 10.63 51.99 m 76.70
average 3.00 m deep
0.37 17.36 13.10 51.99 m 82.45
average 4.00 m deep
0.61 28.62 21.59 51.99 m 102.19
average 5.00 m deep
1.01 47.38 35.68 51.99 m 135.05
Extra for Type N sand bed 800×150 mm
0.13 6.10 4.35 1.67 m 12.11
Type T sand surround 800×150 mm
0.26 12.20 8.54 5.37 m 26.10
Type F granular bed 800×150 mm
0.14 6.57 4.68 2.28 m 13.53
Type S granular surround 800 wide×150 mm
0.26 12.20 8.70 7.23 m 28.13
Type A concrete bed 800×150 mm
0.20 9.38 6.69 8.40 m 24.47
Type B 150 mm concrete bed and haunch
0.36 16.89 12.04 7.65 m 36.58
Type Z concrete surround 800 wide×150 mm
0.22 10.32 22.47 25.06 m 57.85
Vitrified clay pipes to BS 65, spigot and socket joints with sealing ring
400 mm diameter drain or sewer in trench, depth to invert
average 2.50 m deep
0.35 16.42 12.38 83.08 m 111.88
average 3.00 m deep
0.42 19.70 14.85 83.08 m 117.63
average 4.00 m deep
0.66 30.96 23.36 83.08 m 137.40
average 5.00 m deep
1.07 50.19 37.84 83.08 m 171.12
average 6.00 m deep
1.85 86.78 65.45 83.08 m 235.31
Extra for Type N sand bed 900×150 mm
0.14 6.57 4.68 1.87 m 13.13
Type T sand surround 900 wide×150 mm
0.28 13.13 9.36 7.67 m 30.17
Type F granular bed 900×150 mm
0.15 7.04 5.01 2.59 m 14.64
Type S granular surround 900×150 mm
0.28 13.13 9.36 10.56 m 33.06
Type A concrete bed 900×150 mm
0.21 9.85 7.02 9.44 m 26.31
Type B, 150 mm concrete bed and haunch
0.43 20.17 14.38 10.08 m 44.63
Type Z concrete surround 900 wide×150 mm
0.40 18.76 13.38 38.73 m 70.87
rate £ Concrete pipes with rebated flexible joints to BS 5911 Class L, M or H
piped culvert in trench, depth to invert
average 2.00 m deep
0.33 15.48 11.71 15.82 m 43.01
average 3.00 m deep
0.44 20.64 15.38 15.82 m 51.84
average 4.00 m deep
0.72 33.78 25.20 15.82 m 74.80
average 6.00 m deep
1.65 77.40 58.37 15.82 m 151.60
Extra for Type A concrete bed 1050×150 mm
0.24 11.26 8.03 11.01 m 30.30
Type Z concrete surround 1050 wide×150 mm
0.45 21.11 15.05 49.35 m 85.51
750 mm diameter piped culvert in trench, depth to invert
average 2.00 m deep
0.38 20.18 17.25 42.17 m 79.60
average 3.00 m deep
0.52 27.61 23.53 42.17 m 93.31
average 4.00 m deep
0.92 48.85 41.68 42.17 m 132.70
average 6.00 m deep
2.05 108.86 92.88 42.17 m 243.91
Extra for Type A concrete bed 1250×150 mm
0.26 13.81 8.70 15.25 m 37.76
Type Z concrete surround 1250 wide×150 mm
0.50 26.55 16.72 110.90 m 154.18
900 mm
in trench, depth to invert average 2.00 m deep
0.43 22.83 19.50 61.51 m 103.85
average 3.00 m deep
0.62 32.92 28.12 61.51 m 122.55
average 4.00 m deep
1.06 56.29 48.02 61.51 m 165.81
average 6.00 m deep
2.25 119.48 101.92 61.51 m 282.91
Extra for Type A concrete bed 1500×150 mm
0.28 14.87 9.36 17.86 m 42.09
Type Z concrete surround 1500 wide×150 mm
0.55 29.20 18.39 154.21 m 201.81
Corrugated steel pipes galvanised, hot dip bitumen coated (Armco type)
1000 mm diameter piped culvert in trench, Type S granular surround, depth to invert
average 2.00 m deep
0.99 52.57 44.86 70.11 m 167.54
1600 mm diameter piped culvert in trench, Type S granular surround, depth to invert
2000 mm diameter piped culvert in trench, Type S granular surround, depth to invert
average 2.00 m deep
2.97 157.71 134.60 226.01 m 518.31
2200 mm diameter piped culvert in trench, Type S granular surround, depth to invert
average 2.00 m deep
3.29 174.70 149.06 255.25 m 579.01
Clay cable ducts; Hepduct
100 mm diameter service duct in trench, Type S granular surround, depth to invert
average 1.00 m deep
0.14 6.57 4.83 8.13 m 19.52
Two 100 mm diameter service ducts in trench, Type S granular surround, depth to invert
average 1.00 m deep
0.24 11.26 8.30 16.09 m 35.65
Three 100
in trench, Type S granular surround, depth to invert average 1.00 m deep
0.32 15.01 11.06 23.10 m 49.17
Four 100 mm diameter service ducts in trench, Type S granular surround, depth to invert
average 1.00 m deep
0.40 18.76 13.85 31.95 m 64.56
Six 100 mm diameter service ducts in trench, Type S granular surround, depth to invert
average 1.00 m deep
0.60 28.15 20.72 43.66 m 92.52
Extra for Type Z concrete surround on single duct
0.08 3.75 2.68 5.80 m 12.23
Type Z concrete surround on additional ways
0.08 3.75 2.68 5.80 m 12.23
150 mm diameter conduit, per way
0.01 0.47 0.34 8.47 m 9.27
225 mm diameter
0.01 0.47 0.34 27.95 m 28.76
FILTER DRAINS
Vitrified clay perforated pipes to BS 65, sleeved joints
150 mm diameter filter drain in trench with Type A bed and Type A fill filter material,
average 1.00 m deep
0.26 12.20 8.88 18.77 m 39.84
average 2.00 m deep
0.30 14.07 10.21 23.33 m 47.61
average 3.00 m deep
0.35 16.42 11.93 27.91 m 56.27
150 mm pipes with Type A bed and Type B fill, depth
average 1.00 m deep
0.26 12.20 8.88 17.96 m 39.04
average 2.00 m deep
0.30 14.07 10.21 21.55 m 45.83
average 3.00 m deep
0.35 16.42 11.93 25.19 m 53.54
225 mm pipes with Type A bed and Type A fill, depth
average 1.00 m deep
0.27 12.67 9.21 29.22 m 51.09
average 2.00 m deep
0.31 14.54 10.50 34.93 m 59.97
average 3.00 m deep
0.36 16.89 12.32 40.07 m 69.28
225 mm pipes with Type A bed and Type B fill, depth
average 1.00 m deep
0.27 12.67 9.21 28.31 m 50.18
average 2.00 m 0.31 14.54 10.50 32.88 m 57.92
deep
300 mm pipes with Type A bed and Type A fill, depth
average 1.00 m deep
0.28 13.13 9.54 48.53 m 71.20
average 2.00 m deep
0.32 15.01 10.90 55.10 m 81.00
average 3.00 m deep
0.37 17.36 12.62 61.24 m 91.22
300 mm pipes with Type A bed and Type B fill, depth
average 1.00 m deep
0.28 13.13 9.54 47.47 m 70.15
average 2.00 m deep
0.32 15.01 10.90 52.71 m 78.62
average 3.00 m deep
0.37 17.36 12.62 57.64 m 87.62
Concrete porous pipe BS 5911 Pt 114, sleeved joints
150 mm pipes with Type A bed and Type A fill, depth
average 1.00 m deep
0.26 12.20 8.88 11.09 m 32.17
average 2.00 m deep
0.30 14.07 10.21 15.65 m 39.94
average 3.00 m deep
0.35 16.42 11.93 20.24 m 48.59
150 mm pipes with Type A bed and Type B
deep
average 2.00 m deep
0.30 14.07 10.21 13.87 m 38.16
average 3.00 m deep
0.35 16.42 11.93 17.51 m 45.86
225 mm pipes with Type A bed and Type A fill, depth
average 1.00 m deep
0.27 12.67 9.21 12.80 m 34.67
average 2.00 m deep
0.31 14.54 10.50 18.50 m 43.54
average 3.00 m deep
0.36 16.89 12.32 23.65 m 52.86
225 mm pipes with Type A bed and Type B fill, depth
average 1.00 m deep
0.27 12.67 9.21 11.88 m 33.76
average 2.00 m deep
0.31 14.54 10.50 16.45 m 41.49
average 3.00 m deep
0.36 16.89 12.32 20.52 m 49.74
300 mm pipes with Type A bed and Type A fill, depth
average 1.00 m deep
0.28 13.13 9.54 15.27 m 37.94
average 2.00 m deep
0.32 15.01 10.90 21.83 m 47.74
average 3.00 m deep
0.37 17.36 12.62 27.98 m 57.96
300 mm pipes with Type A bed and Type B fill, depth
average 1.00 m deep
0.28 13.13 9.54 14.21 m 36.88
average 2.00 m deep
0.32 15.01 10.90 19.45 m 45.35
average 3.00 m deep
0.37 17.36 12.62 24.38 m 54.36
Filter material
drains, subbase material and lightweight aggregate infill Type A 0.07 3.28 2.17 10.15 m315.60 Type B 0.07 3.28 2.26 7.93 m313.47 Excavate and replace filter material contiguous with filter drain
Type A 0.47 10.65 10.05 10.15 m330.85 Type B 0.47 10.65 10.05 7.93 m328.64 FIN DRAINS AND NARROW FILTER DRAINS
Fin Drain D.O.T. type 6 using ‘Trammel’ drainage fabrics and perforated clay drain; surrounding pipe with sand and granular fill
100 mm clay perforated pipes, depth
not exceeding 1.5 m
0.23 10.79 7.94 19.09 m 37.82
Fin Drain D.O.T. type 7 using ‘Trammel’ drainage fabrics and slotted UPVC drain; surrounding pipe with sand and granular
suitable material 100 mm UPVC slotted pipes, depth
not exceeding 1.5 m
0.23 10.79 7.94 67.95 m 86.67
rate £ Narrow Filter Drain D.O.T. type 8 using ‘Trammel’ drainage fabrics and perforated UPVC drain; surrounding pipe with sand and granular fill, backfilling with granular material
110 mm UPVC perforated pipes, depth
not exceeding 1.5 m 0.22 10.32 7.60 16.85 m 34.77 Narrow Filter Drain D.O.T. type 9 using ‘Trammel’ drainage fabrics and perforated UPVC drain; surrounding pipe with sand and granular fill, backfilling with granular material
110 mm UPVC perforated pipes, depth
not exceeding 1.5 m 0.23 10.79 7.94 22.35 m 41.07 CONNECTIONS Note: excavation presumed covered by new Trench.
