The work package is the lowest level of each branch of the WBS and is usually determined by the lowest level of cost collection. A unique WBS field is assigned to each work package. Work packages include detailed activities and milestones that are us...
Essentially required in order to reduce expected ground settlement and to protect underground utilities / structures etc.Deep compaction by 350 mm dia Vibroflot, 3 m centres in sand.Working on 12 hour basis, a vibroflot will achieve an output of 3-4,...
Compact & Consolidate using Vibratory Roller or compactor. Sand 31.25 m2/hr Soil 58.82 m2/hr Clay 55.56 m2/hr Hardcore 38.46 m2/hr Ash 57.85 m2/hr
Soil Mix Wall Three auger machine drilling and mixing cement into three cores. H-piles dropped into two, then machine moves along by two holes. An average output was 4 - 5 m/day.
Strutting To install simple horizontal heavy duty strutting, a typical rate of 2 days per strut/gang is reasonable. To install diagonal slab/roof cross-brace strutting, a typical rate of 6 days per strut/gang is reasonable. To remove these struts, al...
Multiple Bell Ground Anchors Often used in London Clay. Uncased, 10 m long 2.0 no/day Top Cased type, 15 m long 1.0 no/day Anchor Stressing 2.0 no/day
Removable Ground Anchors Recent innovation of "removable" ground anchor system. Steel cables are doubles up and threaded over a roller at the anchor end. Once de-stressed, they can be pulled out. 1 rig can achieve... Drill 30 m shaft 7.0 hrs Install ...
Slurry mix wall (for noise restrictions/obstructions) grab excavation to full depth, fill with cement or bentonite mix, drop and hold sheet piles in place.Excavation 1 panel (4.5 m long on plan) with grab and crane.Excavate 1 panel in 2 days + 1 day ...
Sheet Piling On reclamation, sand fill, sheet piling by crane and drop hammer, vibro hammer or diesel hammer.A rate of 20 - 25 No/day to 20 to 35 m deep.1 no = 0.4 m wide on plan and 6 m long.Therefore 8 - 10 m/day per rig is achievable.On more diffi...
Loose from side of excavation, including compaction (m3/hr)... Material Ne 100m 100-200mm 200-300mm exc 300m Loose Sand/Soil 0.85 1.02 1.28 1.69 Clay/Heavy Chalk 0.77 0.92 1.16 1.56 Hoging 0.81 0.97 1.20 1.61 Hardcode 0.71 0.84 1.06 1.41
Installation of temporary traffic decking, consisting of steel beam decking and concrete panels. A typical rate of = 1.6 m2/hr.
To setup a cofferdam dewatering system, including boring, pump installation and outflow pipework and drainage tanks etc, typical rates are...Small 2 hole system, for an overrun tunnel, with a single drilling rig takes about 7 - 10 days to get up and ...
A typical rate of 3 days per instrument can be used to calculate detailed ground monitoring scenarios.
Vertical Grout Curtain Application of grout curtain. A typical rate of 6.20 hrs/m run.
Machine Rail Mounted Hydraulic Grab Rate of 30 - 50 m3 of sand per hour (dependant upon depth), with 1.5 m3 made (2.0 m3 bucket) with each machine lift. Giving a required lift rate of 2.4 mins. A rate of 37 m3/hr (per rig) was achieved on HK Station ...
Tender rates are often quoted as between 20 and 25 m3/hr. With adequate supervision and sufficient loose spoil material supplied to the crane drop area, these rates can easily be increased. Grabs mounted on crawler cranes, rates depend on... Depth of...
Tractor with backactor, Massey Ferguson or JCB.3 has a 0.3 m3 bucket. Smaller 360 degree excavator has a 0.4 m3 bucket. JCB.6D, Liebherr 400, Hymak 580 or typical 360 degree machine has a 0.5 m3 bucket. 360 degree excavator machine has a 0.6 m3 bucke...
Wagon sizes and tonnage capacities vary and should be taken into consideration. Rock = 2.5 T/m3 Concrete = 2.4 T/m3 Landfill / CDG = 1.9 T/m3 Sand = 1.8 T/m3
Ground Excavation Rates (m3/hr):Ground TypeBucketBulk WorksBasementsTrenchesSmall & DeepSand/Soil0.3m38.78.07.18.4> 0.4m328.515.425.010.0 0.5m350.020.028.613.3Gravel0.3m37.16.96.14.5 0.4m325.914.322.28.7 0.5m340.018.128.611.1Clay/Chalk0.3m37.16.56.14...