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Labour Factor Database

Our comprehensive database makes it simple to search for and find the exact labour factors you need. The advanced filtering options let you narrow down your search based on your project needs, helping you plan and schedule your construction projects more effectively.

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Excavation

For a feasibility study, your Excavation breakdown is 20% labour, 15% material and 65% fixed costs.

Description
Man Hours
Unit

Site Clearance




Strip 50mm topsoil and remove from site (machine)


0.03
hrs/m3

Strip 50mm topsoil and cart to temporary stockpile on site (machine)


0.01
hrs/m3

Strip 100mm topsoil and cart to temporary stockpile on site (machine)


0.02
hrs/m3

Strip 150mm topsoil and cart to temporary stockpile on site (hand)


5.0
hrs/m3

Strip 150mm topsoil and cart to temporary stockpile on site (machine)


0.03
hrs/m3

Excavation, Backfilling and Filling




Hand Excavation & Filling




Hand Excavation in trenches not exceeding 1m deep




  • in sand

    • 1.20
    hrs/m3
  • in medium soil

    • 2.20
    hrs/m3
  • in heavy soil

    • 3.30
    hrs/m3
  • Large footings
  • Ground beams
  • Column pads

    • 3.25
    hrs/m3
  • Footings under 300mm x 150mm dwarf walls without footings

    • 6.50
    hrs/m3
  • Small column pads under 450mm x 450mm

    • 10.50
    hrs/m3
  • Pile excavations without footings

    • 15.00
    hrs/m3
  • Form battens to excavated faces

    • 0.04
    hrs/m2

    Hand Loading and Removal




  • in sand

    • 1.00
    hrs/m3
  • in medium soil

    • 1.30
    hrs/m3
  • in heavy soil

    • 1.90
    hrs/m3

    Wheel not exceeding 50m, spread and level


    1.25
    hrs/m3

    Backfilling and compaction


    1.00
    hrs/m3
  • Place only backfilling material

    • 0.04
    hrs/m3
  • Large footings
  • Ground beams
  • Column pads

    • 1.30
    hrs/m3
  • Combined rate for excavation, backfilling and disposal of surplus

    • 4.00
    hrs/m3
  • Load up for disposal

    • 0.30
    hrs/m3
  • Place backfill material and consolidate by tamping

    • 0.8
    hrs/m3

    Machine Excavation and backfilling




  • in trenches not exceeding 1m deep, in medium soil

    • 0.20
    hrs/m3

    Add




  • Backhoe
    • + operator
    0.20
    hrs/m3
  • Front-end loader
    • + operator
    0.08
    hrs/m3
  • Tipper
    • + operator
    0.10
    hrs/m3
  • Vibrating plate
    • + operator
    0.10
    hrs/m3

    Basecourse filling in 150mm thick layers under slabs


    1.00
    hrs/m3

    Planking and Strutting




    Planking and strutting to excavation




  • Not exceeding 1.5m deep

    • 0.20
    hrs/m2
  • Not exceeding 3m deep

    • 0.25
    hrs/m2
  • Not exceeding 4m deep

    • 0.30
    hrs/m2

    Surface Treatments




    Sand Blinding to filling under slabs




  • 25mm thick

    • 0.06
    hrs/m2
  • 50mm thick

    • 0.10
    hrs/m2

    Level and Grade Surface


    0.05
    hrs/m2

    Membranes




    Underlay, plastic film


    0.03
    hrs/m2
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