ABSTRACT

Importing and storing selected and approved

topsoil; 20 tonne load = 11.88m3 average

20 tonne loads 33.60 – – – 33.60 m3 33.60

Surface treatments

Compacting

bottoms of excavations – 0.01 0.10 0.04 – m2 0.14 Surface preparation

Trimming surfaces of cultivated ground to final

levels; removing roots, stones and debris

exceeding 50mm in any direction to tip off

site; slopes less than 15°

clean ground with minimal stone content – 0.25 4.81 – – 100m2 4.81 slightly stony; 0.5 kg stones per m2 – 0.33 6.41 – 0.01 100m2 6.42 very stony; 1.0-3.0 kg stones per m2 – 0.50 9.63 – 0.02 100m2 9.65 clearing mixed, slightly contaminated

rubble; inclusive of roots and vegetation – 0.50 9.63 – 0.06 100m2 9.69 clearing brick-bats, stones and clean

rubble – 0.60 11.55 – 0.04 100m2 11.59

D41 CRIB WALLS/GABIONS/REINFORCED

EARTH

CRIB WALLS

Crib walls; Phi Group

Permacrib (timber) or Andacrib (concrete) crib

walling system; machine filled infill with

crushed rock; inclusive of concrete footing and

rear wall drain; excluding excavation and

backfill material

retaining walls up to 2.0m – – – – – m2 160.00 retaining walls up to 4.0m – – – – – m2 180.00 retaining walls up to 6.0m – – – – – m2 200.00

GABIONS

Retaining walls; Maccaferri Ltd

Wire mesh gabions; galvanized mesh

80 ×100mm; filling with broken stones

125-200mm size; wire down securely to manufacturer’s instructions; filling front face by hand

2× 1× 0.50m 19.09 0.67 38.50 3.72 66.97 nr 109.19

2× 1× 1.0m 26.82 1.33 77.00 7.45 122.58 nr 207.03

PVC coated gabions

2× 1× 0.5m 24.84 0.67 38.50 3.72 72.72 nr 114.94

2× 1× 1.0m 34.16 1.33 77.00 7.45 129.92 nr 214.37

PC

Excluding site overheads and profit £ hours £ £ £ rate £

GABIONS – cont

Retaining walls – cont Reno mattress gabions

6× 2× 0.17m 80.78 1.00 57.75 5.59 178.46 nr 241.80

6× 2× 0.23m 87.62 1.50 86.63 7.45 219.77 nr 313.85

6× 2× 0.30m 102.82 2.00 115.50 8.38 275.19 nr 399.07

REINFORCED EARTH

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 35.38 1.60 2.36 m3 39.34

slopes exceeding 45°; Tensartech

Greenslope System 5.08 0.06 3.57 2.31 5.08 m3 10.96

extra over to slopes exceeding 45° for

temporary shuttering; shuttering measured

per m2 of vertical elevation – – – – 12.00 m2 12.00 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 35.38 1.60 2.92 m3 39.90

slopes exceeding 45°; Tensartech

Greenslope System 6.28 0.06 3.57 2.31 6.28 m3 12.16

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 0.38 0.21 5.26 m2 5.85

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 £11.20/m3

300mm centres; slopes up to 45°;

Tensartech Natural Green System 4.85 0.08 4.49 1.80 18.29 m3 24.58

600mm centres; slopes up to 45°;

Tensartech Natural Green System 2.42 0.06 3.57 2.31 15.86 m3 21.74

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 0.38 0.21 5.26 m2 5.85

PC

Excluding site overheads and profit £ hours £ £ £ rate £

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 3.57 1.60 9.72 m3 14.89

600mm centres; slopes exceeding 45°;

Tensartech Greenslope System 4.85 0.06 3.57 1.60 4.85 m3 10.02

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 9.62 – 14.00 m2 23.62 Extra over embankments for seeding of bags – 0.03 1.92 – 0.32 m2 2.24 Extra over embankments for Bodkin joints – – – – 1.10 m 1.10

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 1.00-1.50m at 1.00m centres 26.63 0.17 6.42 1.77 26.63 m2 34.82

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 38.50 1.77 9.10 m2 49.37

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 base on 1.50m centres;

long-term solution 382.02 0.25 9.63 1.77 382.02 m2 393.42

SO8/BO6/BO8 cast SG iron Stealth and

Bat anchors installed in combination with

galvanized steel accessories to a depth of

6m; average cost base on 1.50m centres;

short term solution 163.22 0.25 9.63 1.77 163.22 m2 174.62

PC

Excluding site overheads and profit £ hours £ £ £ rate £

REINFORCED EARTH – cont

Anchoring systems – cont 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 0.25 14.44 1.41 184.80 m2 200.65

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 9.63 1.77 289.41 m2 300.81

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 4.81 1.18 115.76 m2 121.75

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 120.00 retaining walls up to 6.0m – – – – – m2 125.00

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 180.00 retaining walls up to 6.0m – – – – – m2 210.00