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Edit Slab
Name of the Slab
Length (mm):
Width (mm):
Thickness (mm):
Select Thickness
100 mm
125 mm
150 mm
175 mm
200 mm
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Cost of Concrete per Cubic Meter
Select Concrete Cost
Nairobi; Class 1:2:4 (20/20) = ksh12650
Nairobi; Class 1:1.5:3 (25/20) = ksh14250
Nairobi; Class 1:1:2 (30/20) = ksh16300
Nairobi; Class (40/20) = ksh19850
Coastal; Class 1:2:4 (20/20) = ksh16000
Coastal; Class 1:1.5:3 (25/20) = ksh15500
Coastal; Class 1:1:2 (30/20) = ksh19100
Coastal; Class (40/20) = ksh29500
Western; Class 1:2:4 (20/20) = ksh13300
Western; Class 1:1.5:3 (25/20) = ksh15100
Western; Class 1:1:2 (30/20) = ksh16200
Western; Class (40/20) = ksh21800
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Formwork Cost Per Sqm
Select Formwork Cost Per Sqm
Nairobi; Sawn formwork to slabs not exceeding 3.50m high = ksh540
Coastal; Sawn formwork to slabs not exceeding 3.50m high = ksh610
Western; Sawn formwork to slabs not exceeding 3.50m high = ksh610
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Labor Cost
Select Labor Cost Percentage
20% of Material Cost
25% of Material Cost
30% of Material Cost
35% of Material Cost
40% of Material Cost
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Diameter of Bars
Select Diameter
8 mm
10 mm
12 mm
16 mm
20 mm
25 mm
32 mm
40 mm
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Spacing of Long Bars(Top&Bottom)
Select Spacing of Long Bars
100 mm
150 mm
200 mm
250 mm
300 mm
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Spacing of Short Bars(Top&Bottom)
Select Spacing of Short Bars
100 mm
150 mm
200 mm
250 mm
300 mm
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Crank Length Ratio (Top Bars)
Crank Length Ratio (Top Bars)
20% of span
25% of span
30% of span
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Bars Cost per Kg
Select Bar Cost Per Kg
Nairobi Region = ksh170
Coastal Region = ksh180
Western Region = ksh190
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Update Slab