For small additions to buildings or for partitioning in commercial contracts, allow extra time to the give rate - up to 50% as required. Better to have more time than less.
For a feasibility study, your Carpentry breakdown is 45% labour, 55% materials and 0% fixed costs.
Rafter
100mm x 50mm
150mm x 50mm
200mm x 50mm
Collar tie
150mm x 25mm
Strut and brace
100mm x 50mm
100mm x 75mm
Purlin/Roofing Batten
75mm x 50mm
100mm x 50mm
150mm x 50mm
200mm x 50mm
Eaves framing
75mm x 50mm
100mm x 50mm
Fascia
100mm x 50mm
150mm x 50mm
Ridge board
150mm x 25mm
200mm x 25mm
100mm x 50mm
Valley board
150mm x 25mm
200mm x 25mm
150mm x 50mm
200mm x 50mm
Purlin Beams and Lintels
200mm x 50mm
300mm x 75mm
200mm x 100mm
300mm x 100mm
Posts
100mm x 100mm
Prefabricated roof trusses, erection only
6m span
9m span
12m span
