WAFFLE SLAB CALCULATION | QUANTITY SURVEY | VOLUME OF CONCRETE & AREA OF SHUTTERING

WAFFLE SLAB CALCULATION | QUANTITY SURVEY | VOLUME OF CONCRETE & AREA OF SHUTTERING

 

For a given drawing of waffle, Slab find

1. Volume of Concrete

2. Area of Shuttering

 

1. Volume of Concrete = Area x Depth

= L x B x D

= 5.30 x 6 x 0.27

= 8.58 m³

 

Deduction for the Waffle Cone:   

L1 = 0.20; B1 = 0.20

L2 = 0.40: B2 = 0.40

 

Volume of Waffle Cone = L x B x D x no. of Cones

Average Length = (L1 + L2)/2

= (0.20 + 0.40)/2

= 0.30m

Average Breadth = (B1 + B2)/2

= (0.20 + 0.40)/2

= 0.30m

 

Volume of Waffle Cone = L x B x D x no. of Cones

= 0.30 x 0.30 x 0.20 x 25  

= 0.45 m³

 

Total Volume of Concrete required = 8.58 ‐ 0.45     `

= 8.13 m³    

 

2. Shuttering Area = Bottom area of Slab

= L x B

= 5.30 x 6

= 31.8 m²

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