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Mechanical Services

Common labour factors for Mechanical Services.

For a feasibility study, your Mechanical Services (air conditioning) breakdown is 35% labour, 65% materials and 0% fixed costs.

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Mechanical Services
Description
Man Hours
Unit

Pipework




Constants exclude bends,junctions,tees and flanges, installed complete, including standard supports but excluding insulations, diameter




Copper piping with silver soldered joints.




  • 15mm

    • 0.25
    hrs/m
  • 20mm

    • 0.28
    hrs/m
  • 25mm

    • 0.32
    hrs/m
  • 32mm

    • 0.37
    hrs/m
  • 40mm

    • 0.43
    hrs/m
  • 50mm

    • 0.50
    hrs/m
  • 65mm

    • 0.62
    hrs/m
  • 80mm

    • 0.75
    hrs/m
  • 100mm

    • 0.95
    hrs/m
  • 150mm

    • 1.50
    hrs/m

    Long sweep bend




  • 15mm

    • 0.16
    hrs/no.
  • 20mm

    • 0.16
    hrs/no.
  • 25mm

    • 0.18
    hrs/no.
  • 32mm

    • 0.23
    hrs/no.
  • 40mm

    • 0.30
    hrs/no.
  • 50mm

    • 0.37
    hrs/no.
  • 65mm

    • 0.50
    hrs/no.
  • 80mm

    • 0.70
    hrs/no.
  • 100mm

    • 0.85
    hrs/no.
  • 150mm

    • 1.00
    hrs/no.

    Junction




  • 15mm

    • 0.20
    hrs/no.
  • 20mm

    • 0.20
    hrs/no.
  • 25mm

    • 0.22
    hrs/no.
  • 32mm

    • 0.27
    hrs/no.
  • 40mm

    • 0.33
    hrs/no.
  • 50mm

    • 0.43
    hrs/no.
  • 65mm

    • 0.65
    hrs/no.
  • 80mm

    • 0.85
    hrs/no.
  • 100mm

    • 1.00
    hrs/no.
  • 150mm

    • 1.30
    hrs/no.

    Single bronze flange, with gasket and bolts




  • 15mm

    • 0.16
    hrs/no.
  • 20mm

    • 0.16
    hrs/no.
  • 25mm

    • 0.18
    hrs/no.
  • 32mm

    • 0.23
    hrs/no.
  • 40mm

    • 0.30
    hrs/no.
  • 50mm

    • 0.40
    hrs/no.
  • 65mm

    • 0.56
    hrs/no.
  • 80mm

    • 0.76
    hrs/no.
  • 100mm

    • 0.93
    hrs/no.
  • 150mm

    • 1.15
    hrs/no.

    Black Carbon Steel Schedule 40 piping




    with butt welded joints, installed complete but excluding insulation and supports, diameter




  • 20mm

    • 0.46
    hrs/m
  • 25mm

    • 0.50
    hrs/m
  • 32mm

    • 0.57
    hrs/m
  • 40mm

    • 0.67
    hrs/m
  • 50mm

    • 0.81
    hrs/m
  • 65mm

    • 1.00
    hrs/m
  • 80mm

    • 1.80
    hrs/m
  • 100mm

    • 1.38
    hrs/m
  • 150mm

    • 1.66
    hrs/m

    Bend




  • 20mm

    • 1.00
    hrs/no.
  • 25mm

    • 1.10
    hrs/no.
  • 32mm

    • 1.25
    hrs/no.
  • 40mm

    • 1.45
    hrs/no.
  • 50mm

    • 1.70
    hrs/no.
  • 65mm

    • 2.00
    hrs/no.
  • 80mm

    • 2.40
    hrs/no.
  • 100mm

    • 3.00
    hrs/no.
  • 100mm

    • 3.00
    hrs/no.
  • 150mm

    • 4.10
    hrs/no.

    Tee




  • 20mm

    • 1.50
    hrs/no.
  • 25mm

    • 1.60
    hrs/no.
  • 32mm

    • 1.80
    hrs/no.
  • 40mm

    • 2.00
    hrs/no.
  • 50mm

    • 2.30
    hrs/no.
  • 65mm

    • 2.80
    hrs/no.
  • 80mm

    • 3.50
    hrs/no.
  • 100mm

    • 4.20
    hrs/no.
  • 150mm

    • 5.20
    hrs/no.

    Single flange, with gasket and bolts




  • 20mm

    • 1.15
    hrs/no.
  • 25mm

    • 1.25
    hrs/no.
  • 32mm

    • 1.40
    hrs/no.
  • 40mm

    • 1.80
    hrs/no.
  • 50mm

    • 2.20
    hrs/no.
  • 65mm

    • 2.60
    hrs/no.
  • 80mm

    • 2.60
    hrs/no.
  • 100mm

    • 3.40
    hrs/no.
  • 150mm

    • 4.60
    hrs/no.

    Galvanised Carbon Steel heavy duty piping




    with screwed joints, installed complete but excluding insulation and supports diameter




  • 20mm

    • 0.38
    hrs/m
  • 25mm

    • 0.44
    hrs/m
  • 32mm

    • 0.52
    hrs/m
  • 40mm

    • 0.61
    hrs/m
  • 50mm

    • 0.73
    hrs/m
  • 65mm

    • 0.91
    hrs/m
  • 80mm

    • 1.12
    hrs/m
  • 100mm

    • 1.31
    hrs/m
  • 150mm

    • 2.12
    hrs/m

    Bend




  • 20mm

    • 0.06
    hrs/no.
  • 25mm

    • 0.65
    hrs/no
  • 32mm

    • 0.75
    hrs/no
  • 40mm

    • 0.85
    hrs/no
  • 50mm

    • 1.00
    hrs/no
  • 65mm

    • 1.25
    hrs/no
  • 80mm

    • 1.50
    hrs/no
  • 100mm

    • 2.10
    hrs/no
  • 150mm

    • 3.80
    hrs/no

    Tee




  • 20mm

    • 0.75
    hrs/no.
  • 25mm

    • 0.85
    hrs/no.
  • 32mm

    • 1.00
    hrs/no.
  • 40mm

    • 1.10
    hrs/no.
  • 50mm

    • 1.30
    hrs/no.
  • 65mm

    • 1.60
    hrs/no.
  • 80mm

    • 2.00
    hrs/no.
  • 100mm

    • 3.00
    hrs/no.
  • 150mm

    • 5.00
    hrs/no.

    Single flange, with gasket and bolts




  • 20mm

    • 0.60
    hrs/no.
  • 25mm

    • 0.65
    hrs/no.
  • 32mm

    • 0.75
    hrs/no.
  • 40mm

    • 0.85
    hrs/no.
  • 50mm

    • 1.00
    hrs/no.
  • 65mm

    • 1.25
    hrs/no.
  • 80mm

    • 1.54
    hrs/no.
  • 100mm

    • 2.10
    hrs/no.
  • 150mm

    • 3.80
    hrs/no.

    Stainless Steel Schedule 40 piping




    with welded joints, installed complete but excluding insulation and supports, diameter




  • 20mm

    • 0.70
    hrs/m
  • 25mm

    • 0.75
    hrs/m
  • 32mm

    • 0.82
    hrs/m
  • 40mm

    • 0.92
    hrs/m
  • 50mm

    • 1.06
    hrs/m
  • 65mm

    • 1.22
    hrs/m
  • 80mm

    • 1.32
    hrs/m
  • 100mm

    • 1.44
    hrs/m
  • 150mm

    • 1.91
    hrs/m

    Bend




  • 20mm

    • 1.30
    hrs/no.
  • 25mm

    • 1.45
    hrs/no.
  • 32mm

    • 1.60
    hrs/no.
  • 40mm

    • 1.80
    hrs/no.
  • 50mm

    • 2.00
    hrs/no.
  • 65mm

    • 2.50
    hrs/no.
  • 80mm

    • 3.15
    hrs/no.
  • 100mm

    • 4.00
    hrs/no.
  • 150mm

    • 4.90
    hrs/no.

    Tee




  • 20mm

    • 2.00
    hrs/no.
  • 25mm

    • 2.20
    hrs/no.
  • 32mm

    • 2.40
    hrs/no.
  • 40mm

    • 2.65
    hrs/no.
  • 50mm

    • 2.90
    hrs/no.
  • 65mm

    • 3.30
    hrs/no.
  • 80mm

    • 4.00
    hrs/no.
  • 100mm

    • 4.60
    hrs/no.
  • 150mm

    • 5.45
    hrs/no.

    Single flange, with gasket and bolts




  • 20mm

    • 1.50
    hrs/no.
  • 25mm

    • 1.60
    hrs/no.
  • 32mm

    • 1.80
    hrs/no.
  • 40mm

    • 2.00
    hrs/no.
  • 50mm

    • 2.30
    hrs/no.
  • 65mm

    • 2.80
    hrs/no.
  • 80mm

    • 3.50
    hrs/no.
  • 100mm

    • 4.20
    hrs/no.
  • 150mm

    • 5.20
    hrs/no.

    Mild Steel heavy duty piping




    with Victualic joints, installed complete but excluding insulation and supports, diameter




  • 50mm

    • 0.56
    hrs/m
  • 80mm

    • 0.86
    hrs/m
  • 100mm

    • 0.95
    hrs/m
  • 150mm

    • 1.50
    hrs/m

    Bend




  • 50mm

    • 0.37
    hrs/no.
  • 80mm

    • 0.60
    hrs/no.
  • 100mm

    • 0.75
    hrs/no.
  • 150mm

    • 1.10
    hrs/no.

    Tee




  • 50mm

    • 0.47
    hrs/no.
  • 80mm

    • 0.07
    hrs/no.
  • 100mm

    • 0.85
    hrs/no.
  • 150mm

    • 1.30
    hrs/no.

    Single flange adaptor, with gasket and bolts




  • 50mm

    • 0.41
    hrs/no.
  • 80mm

    • 0.65
    hrs/no.
  • 100mm

    • 0.80
    hrs/no.
  • 150mm

    • 1.20
    hrs/no.

    Pipe Supports




    Typical fixing centres are shown




    Rod hanger fixed to concrete, diameter




  • 20mm @ 2m centres

    • 0.45
    hrs/no.
  • 25mm @ 2m centres

    • 0.45
    hrs/no.
  • 32mm @ 2m centres

    • 0.45
    hrs/no.
  • 40mm @ 2m centres

    • 0.45
    hrs/no.
  • 50mm @ 2.4m - 3m centres

    • 0.06
    hrs/no.
  • 65mm @ 2.4m - 3m centres

    • 0.06
    hrs/no.
  • 80mm @ 2.4m - 3m centres

    • 0.65
    hrs/no.
  • 100mm @ 3m - 4m centres

    • 0.65
    hrs/no.
  • 150mm @ 3m - 4m centres

    • 0.65
    hrs/no.

    Suspended pipe




    roller assembly fixed to concrete, per metre run, diameter




  • 20mm @ 2m centres

    • 0.80
    hrs/no.
  • 25mm @ 2m centres

    • 0.80
    hrs/no.
  • 32mm @ 2m centres

    • 0.80
    hrs/no.
  • 40mm @ 2m centres

    • 0.80
    hrs/no.
  • 50mm @ 2.4m - 3m centres

    • 0.90
    hrs/no.
  • 65mm @ 2.4m - 3m centres

    • 0.90
    hrs/no.
  • 80mm @ 2.4m - 3m centres

    • 1.00
    hrs/no.
  • 100mm @ 3m - 4m centres

    • 1.00
    hrs/no.
  • 150mm @ 3m - 4m centres

    • 1.10
    hrs/no.

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