Crib Walls, Gabions and Reinforced Earth

PVC coated gabions 2×1×0.5m 27.44 0.67 47.50 5.44 83.09 nr 136.03 2×1×1.0m 38.50 1.33 95.00 10.89 149.80 nr 255.69

Mattress gabions 6×2×0.17m 94.90 1.00 71.25 8.16 208.43 nr 287.84 6×2×0.23m 103.10 1.50 106.88 10.89 256.69 nr 374.46 6×2×0.30m 121.08 2.00 142.50 12.25 321.42 nr 476.17

Embankments; Tensar International Embankments; reinforced with Tensar Geogrid RE520; geogrid laid horizontally within fill to 100% of vertical height of slope at 1.00m centres; filling with excavated material

slopes less than 45°; Tensartech Natural Green System 2.36 0.61 43.65 1.88 2.36 m3 47.89 slopes exceeding 45°; Tensartech Greenslope System 5.08 0.06 4.40 2.92 5.08 m3 12.40 extra over to slopes exceeding 45° for temporary shuttering; shuttering measured per m2 of vertical elevation – – – – 12.00 m2 12.00

PC Labour Labour Plant Excluding site overheads and profit £ hours £ £ £ rate £

Embankments; reinforced with Tensar Geogrid RE540; geogrid laid horizontally within fill to 100% of vertical height of slope at 1.00m centres; filling with excavated material

slopes less than 45°; Tensartech Natural Green System 2.92 0.61 43.65 1.88 2.92 m3 48.45 slopes exceeding 45°; Tensartech Greenslope System 6.28 0.06 4.41 2.92 6.28 m3 13.61 extra over to slopes exceeding 45° for temporary shuttering; shuttering measured per m2 of vertical elevation – – – – 12.00 m2 12.00

Extra for Tensar Mat 400; erosion control mats; to faces of slopes of 45° or less; filling with 20mm fine topsoil; seeding 3.95 0.01 0.47 0.25 5.38 m2 6.10 Embankments; reinforced with Tensar Geogrid RE540; geogrid laid horizontally within fill to 50% of horizontal length of slopes at specified centres; filling with imported fill PC £12.00/m3

300mm centres; slopes up to 45°; Tensartech Natural Green System 4.85 0.08 5.54 2.18 19.25 m3 26.97 600mm centres; slopes up to 45°; Tensartech Natural Green System 2.42 0.06 4.41 2.92 16.82 m3 24.15 extra over to slopes exceeding 45° for temporary shuttering; shuttering measured per m2 of vertical elevation – – – – 12.00 m2 12.00

Extra for Tensar Mat 400; erosion control mats; to faces of slopes of 45° or less; filling with 20mm fine topsoil; seeding 3.95 0.01 0.47 0.25 5.38 m2 6.10 Embankments; reinforced with Tensar Geogrid RE540; geogrid laid horizontally within fill; filling with excavated material; wrapping around at faces

300mm centres; slopes exceeding 45°; Tensartech Natural Green System 9.72 0.06 4.40 1.88 9.72 m3 16.00 600mm centres; slopes exceeding 45°; Tensartech Greenslope System 4.85 0.06 4.40 1.88 4.85 m3 11.13 extra over to slopes exceeding 45° for temporary shuttering; shuttering measured per m2 of vertical elevation – – – – 12.00 m2 12.00

Extra over embankments for bagwork face supports for slopes exceeding 45° – 0.17 11.87 – 14.00 m2 25.87 Extra over embankments for seeding of bags – 0.03 2.37 – 0.33 m2 2.70 Extra over embankments for Bodkin joints – – – – 1.10 m 1.10

PC Labour Labour Plant Excluding site overheads and profit £ hours £ £ £ rate £

CRIB WALLS, GABIONS AND REINFORCED EARTH – cont

Anchoring systems; surface stabilization; Platipus Anchors Ltd; centres and depths shown should be verified with a design engineer; they may vary either way dependent on circumstances Concrete revetments; hard anodized stealth anchors with stainless steel accessories installed to a depth of 1m

SO4 anchors to a depth of 1.001.50m at 1.00m centres 26.63 0.17 7.92 1.51 26.63 m2 36.06

Loadlocking and crimping tool; for stressing and crimping the anchors

hire rate per week 72.93 – – – 72.93 nr 72.93 Surface erosion; geotextile anchoring on slopes; aluminium alloy Stealth anchors

SO4/SO6 to a depth of 1.0-2.0m at 2.00m centres 9.10 1.00 47.50 1.51 9.10 m2 58.11

Brick block or in situ concrete distressed retaining walls; anchors installed in two rows at varying tensions between 18-50 kN along the length of the retaining wall; core drilling of wall not included

SO8/BO6/BO8 bronze Stealth and Bat anchors installed in combination with stainless steel accessories to a depth of 6m; average cost based on 1.50m centres; long-term solution 382.02 0.25 11.88 1.51 382.02 m2 395.41 SO8/BO6/BO8 cast SG iron Stealth and Bat anchors installed in combination with galvanized steel accessories to a depth of 6m; average cost based on 1.50m centres; short-term solution 163.22 0.25 11.88 1.51 163.22 m2 176.61

Timber retaining wall support; anchors installed 19 kN along the length of the retaining wall

SO6/SO8 bronze Stealth anchors including load plate and wege grip; installed in combination with stainless steel accessories to a depth of 3.0m; 1.00m centres; average cost 184.80 – – – – m2 –

PC Labour Labour Plant Excluding site overheads and profit £ hours £ £ £ rate £

Gabions; anchors for support and stability to moving, overturning or rotating gabion retaining walls

SO8/BO6 anchors including base plate at 1.00m centres to a depth of 4.00m 289.41 0.17 11.88 1.51 289.41 m2 302.80

Soil nailing of geofabrics; anchors fixed through surface of fabric or erosion control surface treatment (not included)

SO8/BO6 anchors including base plate at 1.50m centres to a depth of 3.00m 115.76 0.08 5.94 1.01 115.76 m2 122.71

Green faced reinforced soil; Phi Group Textomur reinforced soil system embankments; to reinforced soil slopes 55-70° to the horizontal; including facing and geogrid; excluding backfill material

retaining walls up to 3.0m – – – – – m2 145.00 retaining walls up to 6.0m – – – – – m2 150.00

Split face concrete blocks reinforced soil; Phi Group Modular blocks reinforced soil system embankments; to reinforced soil slopes near vertical; including geogrid; excluding backfill material

retaining walls up to 3.0m – – – – – m2 210.00 retaining walls up to 6.0m – – – – – m2 255.00

Embankments; Grass Concrete Ltd Grasscrete; in situ reinforced concrete surfacing; to 20mm thick sand blinding layer (not included); including soiling and seeding

GC1; 100mm thick – – – – 40.56 m2 40.56 GC2; 150mm thick – – – – 52.07 m2 52.07

Grassblock 103; solid matrix precast concrete blocks; to 20mm thick sand blinding layer; excluding edge restraint; including soiling and seeding

406× 406×103mm; fully interlocking – – – – 51.12 m2 51.12

PC Labour Labour Plant Excluding site overheads and profit £ hours £ £ £ rate £

CRIB WALLS, GABIONS AND REINFORCED EARTH – cont

Flexible sheet materials; Tensar International Tensar Mat 400 erosion mats; 3.0-4.5m wide; securing with Tensar pegs; lap rolls 100mm; anchors at top and bottom of slopes; in trenches 4.40 0.01 0.39 – 4.40 m2 4.79 Topsoil filling to Tensar Mat; including brushing and raking 1.03 0.01 0.39 0.09 1.03 m2 1.51 Tensar Bi-axial Geogrid; to graded compacted base; filling with 200mm granular fill; compacting (turf or paving to surfaces not included); 400mm laps

TriAx 150; 39×39mm mesh 1.40 – 0.32 0.16 7.16 m2 7.64 TriAx 160; 39×39mm mesh 1.82 – 0.32 0.16 7.58 m2 8.06 TriAx 170; 39×39mm mesh 2.15 – 0.32 0.16 7.91 m2 8.39

Flexible sheet materials; Terram Ltd Terram synthetic fibre filter fabric; to graded base (not included)

Terram 1000; 0.70mm thick; mean water flow 50 l/m2/s 0.41 0.01 0.39 – 0.41 m2 0.80 Terram 2000; 1.00m thick; mean water flow 33 l/m2/s 0.62 0.01 0.39 – 0.62 m2 1.01 Terram Minipack 0.71 – 0.08 – 0.71 m2 0.79

Flexible sheet materials; Greenfix Ltd Greenfix; erosion control mats; 10-15mm thick; fixing with 4 nr crimped pins in accordance with manufacturer's instructions; to graded surface (not included)

unseeded Eromat 1; 2.40m wide 103.47 0.67 47.50 – 167.47 100m2 214.97 unseeded Eromat 2; 2.40m wide 130.69 0.67 47.50 – 194.69 100m2 242.19 unseeded Eromat 3; 2.40m wide 147.03 0.67 47.50 – 211.03 100m2 258.53 seeded Covamat 1; 2.40m wide 166.25 0.67 47.50 – 230.25 100m2 277.75 seeded Covamat 2; 2.40m wide 210.00 0.67 47.50 – 274.00 100m2 321.50 seeded Covamat 3; 2.40m wide 227.50 0.67 47.50 – 291.50 100m2 339.00

Bioroll; 300mm diameter; to river banks and revetments 19.00 0.04 2.97 – 21.47 m 24.44 Extra over Greenfix erosion control mats for fertilizer applied at 70 g/m2 7.81 0.07 4.75 – 7.81 100m2 12.56 Extra over Greenfix erosion control mats for Geojute; fixing with steel pins 1.32 0.01 0.53 – 1.32 m2 1.85 Extra over Greenfix erosion control mats for laying to slopes exceeding 30° – – – – – 25% –

PC Labour Labour Plant Excluding site overheads and profit £ hours £ £ £ rate £

Extra for the following operations Spreading 25mm approved topsoil

by machine 0.99 – 0.15 0.16 0.99 m2 1.30 by hand 0.99 0.01 0.83 – 0.99 m2 1.82

Grass seed; PC £4.50/kg; spreading in two operations; by hand

35g/m2 15.75 0.06 3.96 – 15.75 100m2 19.71 50g/m2 22.50 0.06 3.96 – 22.50 100m2 26.46 70g/m2 31.50 0.06 3.96 – 31.50 100m2 35.46 100g/m2 45.00 0.07 4.75 – 45.00 100m2 49.75 125g/m2 56.25 0.67 47.50 – 56.25 100m2 103.75

Extra over seeding by hand for slopes over 30° (allowing for the actual area but measured in plan)

35 g/m2 2.34 – 0.04 – 2.34 100m2 2.38 50g/m2 3.38 – 0.04 – 3.38 100m2 3.42 70g/m2 4.72 – 0.04 – 4.72 100m2 4.76 100g/m2 6.75 – 0.04 – 6.75 100m2 6.79 125g/m2 8.41 – 0.04 – 8.41 100m2 8.45

Grass seed; PC £4.50/kg; spreading in two operations; by machine

35g/m2 15.75 – – 0.52 15.75 100m2 16.27 50g/m2 22.50 – – 0.52 22.50 100m2 23.02 70g/m2 31.50 – – 0.52 31.50 100m2 32.02 100g/m2 45.00 – – 0.52 45.00 100m2 45.52 125 kg/ha 562.50 – – 51.99 562.50 ha 614.49 150 kg/ha 675.00 – – 51.99 675.00 ha 726.99 200 kg/ha 900.00 – – 51.99 900.00 ha 951.99 250 kg/ha 1125.00 – – 51.99 1125.00 ha 1176.99 300 kg/ha 1350.00 – – 51.99 1350.00 ha 1401.99 350 kg/ha 1575.00 – – 51.99 1575.00 ha 1626.99 400 kg/ha 1800.00 – – 51.99 1800.00 ha 1851.99 500 kg/ha 2250.00 – – 51.99 2250.00 ha 2301.99 700 kg/ha 3150.00 – – 51.99 3150.00 ha 3201.99 1400 kg/ha 6300.00 – – 51.99 6300.00 ha 6351.99

Extra over seeding by machine for slopes over 30° (allowing for the actual area but measured in plan)

35 g/m2 2.36 – – 0.08 2.36 100m2 2.44 50g/m2 3.38 – – 0.08 3.38 100m2 3.46 70g/m2 4.72 – – 0.08 4.72 100m2 4.80 100g/m2 6.75 – – 0.08 6.75 100m2 6.83 125 kg/ha 84.38 – – 7.80 84.38 ha 92.18 150 kg/ha 101.25 – – 7.80 101.25 ha 109.05 200 kg/ha 135.00 – – 7.80 135.00 ha 142.80 250 kg/ha 168.75 – – 7.80 168.75 ha 176.55 300 kg/ha 202.50 – – 7.80 202.50 ha 210.30 350 kg/ha 236.25 – – 7.80 236.25 ha 244.05 400 kg/ha 270.00 – – 7.80 270.00 ha 277.80 500 kg/ha 337.50 – – 7.80 337.50 ha 345.30 700 kg/ha 472.50 – – 7.80 472.50 ha 480.30 1400 kg/ha 945.00 – – 7.80 945.00 ha 952.80