ABSTRACT
Excavate inspection chamber by machine; lay base of concrete 150 thick; allow for half section pipework and benchings Precast concrete inspection chamber
600× 400×600mm deep nr 355.00 600× 400×900mm deep nr 390.00
Polypropylene inspection chamber Mini access chamber 600 deep nr 290.00 475mm dia. × 900mm deep; polymer cover nr 460.00 475mm dia. × 900mm deep; ductile iron cover with screw down lid nr 495.00
GULLIES
Gullies; vitrified clay; excavate by hand; supply and set gully in concrete (C10P); connect to drainage system with flexible joints; backfilling with excavated material to 250mm below finished level. Lay 150mm type 1 to receive surface treatments (not included) Trapped mud (dirt) gully; complete with galvanized bucket and cast iron hinged locking grate and frame
loading to 1 tonne; 100 or 150mm outlet each 360.00 loading to 5 tonne; 100mm outlet each 410.00 loading to 5 tonne; 150mm outlet each 420.00
Trapped mud (dirt) gully with rodding eye; complete with galvanized bucket and cast iron hinged locking grate and frame
100 outlet; 300mm internal dia.; 300mm internal depth each 355.00 150 outlet; 400mm internal dia.; 750mm internal depth each 380.00
Concrete road gully Excavate and lay 100mm concrete base (1:3:6) 150 x150mm to suit given invert level of drain; supply and connect trapped precast concrete road gully set in concrete surround; connect to vitrified clay drainage system with flexible joints; supply and fix straight bar dished top cast iron grating and frame; bedded in cement: sand mortar (1:3)
450mm dia. × 1.07m deep with 160mm outlet each 210.00
Gullies PVC-u Excavate and lay 100mm concrete (C20P) base 150×150mm to suit given invert level of drain; connect to drainage system; backfill with DoT Type 1 granular fill; install gully; complete with cast iron grate and frame
yard gully 300mm dia. × 600mm deep each 340.00 trapped PVC-u gully; 110mm dia. × 215mm deep; ductile iron frame each 175.00 bottle gully 228×228×642mm deep each 150.00 bottle gully 228×228×317mm deep each 135.00
£ Excluding site overheads and profit
8.6.1 SURFACE WATER AND FOUL WATER DRAINAGE – cont
LINEAR DRAINAGE
Linear drainage to design sensitive areas Excavate trench by machine; lay Aco Brickslot channel drain on concrete base and surround to falls; all to manufacturers specifications
paving surround to both sides of channel m 205.00
Linear drainage to pedestrian area Excavate trench by machine; lay Aco Multidrain MD polymer concrete channel drain on concrete base and surround to falls; all to manufacturers specifications; paving surround to channel with brick paving PC £300.00/1000
Brickslot galvanized grating; paving to both sides m 205.00 Brickslot stainless steel grating; paving to both sides m 380.00 slotted galvanized steel grating; paving surround to one side of channel m 145.00
Excavate trench by machine; lay Aco Multidrain PPD recycled polypropylene channel drain on concrete base and surround to falls; all to manufacturers specifications; paving surround to channel with brick paving PC £300.00/1000
Heelguard composite black; paving surround to both sides of channel m 145.00
Linear drainage to light vehicular area Excavate trench by machine; lay Aco Multidrain PPD recycled polypropylene channel drain on concrete base and surround to falls; all to manufacturers specifications; paving surround to channel with brick paving PC £300.00/1000
Heelguard composite black; paving surround to both sides of channel m 175.00 ductile iron; paving surround to both sides of channel m 245.00
Accessories for channel drain Sump unit with sediment bucket nr 180.00 End cap; inlet/outlet nr 7.30
MANHOLES
Brick manhole; excavate pit including earthwork support and working space disposal of surplus spoil to dump on site not exceeding 100m; lay concrete (1:2:4) base 1500mm dia. × 200mm thick; reinforced with mesh reinforcement; 110mm vitrified clay channels; benching in concrete (1:3:6) allowing one outlet and two inlets for 110mm dia. pipe; construct inspection chamber 1 brick thick walls of engineering brick Class B; backfill with excavated material; complete with 2 nr cast iron step irons 1200×1200×1200mm
cover slab of precast concrete each 1025.00 access cover; Group 2; 600×450mm each 1075.00
1200×1200×1500mm access cover; Group 2; 600×450mm each 1275.00 recessed cover 5 tonne load; 600× 450mm; filled with block paviors each 1425.00
1200×1200×2000mm; Walls 327.5 thick access cover; Group 2; 600×450mm each 2025.00 recessed cover 5 tonne load; 600× 450mm; filled with block paviors each 2175.00
£ Excluding site overheads and profit
1500×1500×2500mm; Walls 327.5 thick access cover; Group 2; 600×450mm each 3200.00 recessed cover 5 tonne load; 600× 450mm; filled with block paviors each 3350.00
PIPE LAYING
PVC-u pipe laying; excavate trench 300mm wide by excavator; lay bedding; backfill to 150mm above pipe with gravel rejects; backfill with excavated material to ground level; lay surface water drain pipe to depth shown Trench 900mm deep; pipe 640-590mm deep; bedding on reject sand
110mm m 16.80 110mm; short lengths m 18.50 160mm m 28.00 160mm; short lengths m 45.00
Trench 900mm deep; pipe 640-590mm deep; bedding on 20mm shingle 110mm m 21.50 110mm; short lengths m 23.00 160mm m 33.00 160mm; short lengths m 50.00
Trench 1.20m deep; pipe 940-890mm deep; bedding on reject sand 110mm m 29.00 110mm; short lengths m 41.00 160mm m 51.00 160mm; short lengths m 68.00
Trench 1.20m deep; pipe 940-890mm deep; bedding on 20mm shingle 110mm m 29.00 110mm; short lengths m 41.00 160mm m 51.00 160mm; short lengths m 68.00
Vitrified clay pipe laying; excavate trench by excavator; lay bedding; backfill to 150mm above pipe with gravel rejects; backfill with excavated material to ground level; lay surface water drain pipe to depth shown Trench 900mm deep; pipe 640-590mm deep; bedding on reject sand
100mm m 20.00 100mm; short lengths m 21.00 160mm m 31.00 160mm; short lengths m 36.50
Trench 900mm deep; pipe 640-590mm deep; bedding on 20mm shingle 110mm m 25.00 110mm; short lengths m 26.00 160mm m 35.50 160mm; short lengths m 41.50
Trench 1.20m deep; pipe 940-890mm deep; bedding on reject sand 110mm m 32.00 110mm; short lengths m 44.00 160mm m 53.00 160mm; short lengths m 59.00
Trench 1.20m deep; pipe 940-890mm deep; bedding on 20mm shingle 110mm m 32.00 110mm; short lengths m 44.00 160mm m 54.00 160mm; short lengths m 60.00
£ Excluding site overheads and profit
8.6.1 SURFACE WATER AND FOUL WATER DRAINAGE – cont
SUBSOIL DRAINAGE – BY HAND
Main drain; remove 150mm topsoil and deposit alongside trench; excavate drain trench by machine and lay flexible perforated drain; lay bed of gravel rejects 100mm; backfill with gravel rejects or similar to within 150mm of finished ground level; complete fill with topsoil; remove surplus spoil to approved dump on site Main drain 160mm in supplied in 35m lengths
450mm deep 100m 2000.00 600mm deep 100m 2500.00 900mm deep 100m 3350.00
Extra for couplings each 2.35 As above but with 100mm main drain supplied in 100m lengths
450mm deep 100m 1300.00 600mm deep 100m 1675.00 900mm deep 100m 2325.00
Extra for couplings each 1.90
Laterals to mains above; herringbone pattern; excavation and backfilling as above; inclusive of connecting lateral to main drain 160mm pipe to 450mm deep trench
laterals at 1.0m centres 100m² 2000.00 laterals at 2.0m centres 100m² 1000.00 laterals at 3.0m centres 100m² 660.00 laterals at 5.0m centres 100m² 400.00 laterals at 10.0m centres 100m² 200.00
160mm pipe to 600mm deep trench laterals at 1.0m centres 100m² 2500.00 laterals at 2.0m centres 100m² 1250.00 laterals at 3.0m centres 100m² 830.00 laterals at 5.0m centres 100m² 500.00 laterals at 10.0m centres 100m² 250.00
160mm pipe to 900mm deep trench laterals at 1.0m centres 100m² 3350.00 laterals at 2.0m centres 100m² 1675.00 laterals at 3.0m centres 100m² 1100.00 laterals at 5.0m centres 100m² 670.00 laterals at 10.0m centres 100m² 335.00
Extra for 160/160mm couplings connecting laterals to main drain laterals at 1.0m centres 10m 95.00 laterals at 2.0m centres 10m 47.50 laterals at 3.0m centres 10m 31.50 laterals at 5.0m centres 10m 19.00 laterals at 10.0m centres 10m 9.50
100mm pipe to 450mm deep trench laterals at 1.0m centres 100m² 1300.00 laterals at 2.0m centres 100m² 660.00 laterals at 3.0m centres 100m² 430.00 laterals at 5.0m centres 100m² 260.00 laterals at 10m centres 100m² 130.00
£ Excluding site overheads and profit
100mm pipe to 600mm deep trench laterals at 1.0m centres 100m² 1675.00 laterals at 2.0m centres 100m² 830.00 laterals at 3.0m centres 100m² 550.00 laterals at 5.0m centres 100m² 330.00 laterals at 10.0m centres 100m² 165.00
100mm pipe to 900mm deep trench laterals at 1.0m centres 100m² 2325.00 laterals at 2.0m centres 100m² 1175.00 laterals at 3.0m centres 100m² 770.00 laterals at 5.0m centres 100m² 465.00 laterals at 10.0m centres 100m² 230.00
80mm pipe to 450mm deep trench laterals at 1.0m centres 100m² 1275.00 laterals at 2.0m centres 100m² 630.00 laterals at 3.0m centres 100m² 420.00 laterals at 5.0m centres 100m² 250.00 laterals at 10.0m centres 100m² 125.00
80mm pipe to 600mm deep trench laterals at 1.0m centres 100m² 1625.00 laterals at 2.0m centres 100m² 810.00 laterals at 3.0m centres 100m² 530.00 laterals at 5.0m centres 100m² 320.00 laterals at 10.0m centres 100m² 160.00
80mm pipe to 900mm deep trench laterals at 1.0m centres 100m² 2275.00 laterals at 2.0m centres 100m² 1150.00 laterals at 3.0m centres 100m² 750.00 laterals at 5.0m centres 100m² 455.00 laterals at 10.0m centres 100m² 230.00
Extra for 100/80mm couplings connecting laterals to main drain laterals at 1.0m centres 10m 44.00 laterals at 2.0m centres 10m 22.00 laterals at 3.0m centres 10m 14.70 laterals at 5.0m centres 10m 8.80 laterals at 10.0m centres 10m 4.40
8.6.4 LAND DRAINAGE
SUBSOIL DRAINAGE – BY MACHINE
Main drain; remove 150mm topsoil and deposit alongside trench, excavate drain trench by machine and lay flexible perforated drain; lay bed of gravel rejects 100mm; backfill with gravel rejects or similar to within 150mm of finished ground level; complete fill with topsoil; remove surplus spoil to approved dump on site Main drain 160mm supplied in 35m lengths
450mm deep 100m 700.00 600mm deep 100m 820.00 900mm deep 100m 1375.00
Extra for couplings each 2.35
£ Excluding site overheads and profit
8.6.4 LAND DRAINAGE – cont
Main drain – cont 100mm main drain supplied in 100m lengths
450mm deep 100m 1050.00 600mm deep 100m 1375.00 900mm deep 100m 2250.00
Extra for couplings each 1.90
Laterals to mains above; herringbone pattern; excavation and backfilling as above; inclusive of connecting lateral to main drain 160mm pipe to 450mm deep trench
laterals at 1.0m centres 100m² 700.00 laterals at 2.0m centres 100m² 350.00 laterals at 3.0m centres 100m² 230.00 laterals at 5.0m centres 100m² 140.00 laterals at 10.0m centres 100m² 70.00
160mm pipe to 600mm deep trench laterals at 1.0m centres 100m² 820.00 laterals at 2.0m centres 100m² 410.00 laterals at 3.0m centres 100m² 270.00 laterals at 5.0m centres 100m² 160.00 laterals at 10.0m centres 100m² 82.00
160mm pipe to 900mm deep trench laterals at 1.0m centres 100m² 1375.00 laterals at 2.0m centres 100m² 680.00 laterals at 3.0m centres 100m² 450.00 laterals at 5.0m centres 100m² 270.00 laterals at 10.0m centres 100m² 135.00
Extra for 160/160mm couplings connecting laterals to main drain laterals at 1.0m centres 10m 95.00 laterals at 2.0m centres 10m 47.50 laterals at 3.0m centres 10m 31.50 laterals at 5.0m centres 10m 19.00 laterals at 10.0m centres 10m 9.50
100mm pipe to 450mm deep trench laterals at 1.0m centres 100m² 1050.00 laterals at 2.0m centres 100m² 520.00 laterals at 3.0m centres 100m² 340.00 laterals at 5.0m centres 100m² 210.00 laterals at 10.0m centres 100m² 100.00
100mm pipe to 600mm deep trench laterals at 1.0m centres 100m² 1375.00 laterals at 2.0m centres 100m² 690.00 laterals at 3.0m centres 100m² 450.00 laterals at 5.0m centres 100m² 275.00 laterals at 10.0m centres 100m² 140.00
100mm pipe to 900mm deep trench laterals at 1.0m centres 100m² 2250.00 laterals at 2.0m centres 100m² 1125.00 laterals at 3.0m centres 100m² 740.00 laterals at 5.0m centres 100m² 450.00 laterals at 10.0m centres 100m² 225.00
£ Excluding site overheads and profit
80mm pipe to 450mm deep trench laterals at 1.0m centres 100m² 990.00 laterals at 2.0m centres 100m² 495.00 laterals at 3.0m centres 100m² 330.00 laterals at 5.0m centres 100m² 200.00 laterals at 10.0m centres 100m² 99.00
80mm pipe to 600mm deep trench laterals at 1.0m centres 100m² 1325.00 laterals at 2.0m centres 100m² 660.00 laterals at 3.0m centres 100m² 440.00 laterals at 5.0m centres 100m² 265.00 laterals at 10.0m centres 100m² 130.00
80mm pipe to 900mm deep trench laterals at 1.0m centres 100m² 2200.00 laterals at 2.0m centres 100m² 1100.00 laterals at 3.0m centres 100m² 730.00 laterals at 5.0m centres 100m² 440.00 laterals at 10.0m centres 100m² 220.00
Extra for 100/80mm junctions connecting laterals to main drain laterals at 1.0m centres 10m 44.00 laterals at 2.0m centres 10m 22.00 laterals at 3.0m centres 10m 14.70 laterals at 5.0m centres 10m 8.80 laterals at 10.0m centres 10m 4.40
Clay land drain Excavate trench by excavator to 450mm deep; lay 100mm vitrified clay drain with butt joints, bedding Class B; backfill with excavated material screened to remove stones over 40mm; backfill to be laid in layers not exceeding 150mm; top with 150mm topsoil remove surplus material to approved dump on site not exceeding 100m; final level of fill to allow for settlement 100m 1725.00
DRAINAGE DITCHES
Excavate and form ditch and bank with 45 degree sides in light to medium soils; all widths taken at bottom of ditch 300mm wide × 600mm deep 100m 105.00 600mm wide × 900mm deep 100m 100.00 1.20m wide × 900mm deep 100m 920.00 1.50m wide × 1.20m deep 100m 1550.00
Clear and bottom existing ditch average 1.50m deep, trim back vegetation and remove debris to licensed tip, lay jointed concrete pipes; including bedding, haunching and topping with 150mm concrete; 11.50N/mm2-40mm aggregate; backfill with approved spoil from site Pipes 300mm dia. 100m 6800.00 Pipes 450mm dia. 100m 8500.00 Pipes 600mm dia. 100m 11000.00
£ Excluding site overheads and profit
8.6.4 LAND DRAINAGE – cont
LAND DRAINS Excavate trench by excavator; lay Type 2 bedding; backfill to 150mm above pipe with gravel rejects; lay non woven geofabric and fill with topsoil to ground level Trench 600 deep
160mm PVC-u drainpipe 100m 2600.00 110mm PVC-u drainpipe 100m 1500.00 150mm vitrified clay 100m 2900.00 100mm vitrified clay 100m 1825.00
SOAKAWAYS
Construct soakaway from perforated concrete rings; excavation, casting in situ concrete ring beam base; filling with gravel 250mm deep; placing perforated concrete rings; surrounding with geofabric and backfilling to external surround of soakaway with 250mm wide granular surround and excavated material; step irons and cover slab; inclusive of all earthwork retention and disposal off site of surplus material 900mm dia.
