break down of unit rates 17-02-14
DESCRIPTION
Breakdown Unit Rate Calculation for Roadworks - Sample CalculationTRANSCRIPT
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BREAKING DOWN FOR MAJOR RATES
S/NDESCRIPTIONUNIT RATE/M2BREAK DOWN FOR UNIT RATES
1Asphaltic Binding Course (100mm) thick
1 tonne of Asphalt from quarry site & VAT = N18,250.00Haulage for 1ton = 4,000.00Cost of asphalt & haulage = 22,250.00i5 tons = 3.80m3N22,250 x 5 = N111,250 for 1 Tipper1m3 = 111,250/3.80 = N29,276.32
For 100mm thick asphaltic binder course1m3 will lay 6.0m2Allow 0.75%(i.e 25% shrinkage) for compaction6.0 x 0.75% = 4.5m21m3 = 29,276.32/4.5 6,505.85
iiLabour for laying and compaction with equipmentAllow N400/m2400.00
iiIAllow N200 for Tack Coat200.007,105.85Add 25% profit and overhead1,776.46Approximately use minimum8,882.31
8,882.31Approximately use maximum9,000.00
S/NDESCRIPTIONUNIT RATE/M2BREAK DOWN FOR UNIT RATES
2Asphaltic wearing course (50mm) thick
1 tonne of Asphalt from quarry site & VAT = N18,250.00Haulage for 1ton = 4,000.00Cost of asphalt & haulage = 22,250.00i5 tons = 3.80m3N22,250 x 5 = N111,250 for 1 Tipper1m3 = 111,250/3.80 = N29,276.32
For 50mm thick asphaltic wearing course1m3 will lay 12m2Allow 0.75%(i.e 25% shrinkage) for compaction12 x 0.75% = 9m21m3 = 29,276.32/93,252.92
iiLabour for laying and compaction with equipmentAllow N735/m2735.00
iiIAllow 0.45L/m2for Tack Coat200.004,187.92Add 40% profit and overhead1,675.17Approximately use 5,863.095,863.09
Approximately use maximum5,863.09
S/NDESCRIPTIONUNIT RATE/M2BREAK DOWN FOR UNIT RATES
3First & Second Coat surface dresssing
1 tonne of granite from quarry site & Haulage = N5,600i5 tons = 3.80m3N5,600 x 5 = N28,000 for 1 Tipper1m3 = 28,000/3.80 = N7,368.42
1m3 will lay 20m2Allow 0.75%(i.e 25% shrinkage) for compaction20 x 0.75% = 15m21m3 = 7,368.42/15 491.23
Second Coat638.60
iiLabour for laying and compaction with equipmentAllow N300/m2300.00
iiIAllow 1.3L/m2 @ N100 for prime coat130.00Spraying with Tar Boiler (N20/m2)20.00Blinding with sand or quarry dust for blinding(5000 x 0.013)65.00Labour for priming15.001,659.82Add 30% profit and overhead497.95
Approximately use minimum2,157.77
Approximately use maximum2,178.20
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