Determine the amount of the rod on the roof Determine the vote of the rod on the roof

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Determine the vote of the rod on the roof

i think

Roof area is 1000 sqft

Holds 5"

And 1% or 1.5% or 2% of total concrete is taken for roof.. !!

We charge 1.5%.

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The formula is,

Area × Volume ÷ 12( 12"=1') × (1.5%) × Unit Weight = Answer (kg).

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So,

we get,

1000×(5÷12)×(1.5÷100)×222 =1387.50 kg.

Here the depth is 5" so divided by 12" in feet...

1.5% = (1.5÷100)

And,

Unit weight of iron is 222 kg/cft

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So 1000 sft of roofing iron required is 1387.50 kg.