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# Thread: How to calculate the surface area of CONE ROOf Tank.

1. Junior Member

Join Date
Jul 2010
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## How to calculate the surface area of CONE ROOf Tank.

Dear All,
Attached file is for ref.
I am bit confused about formulae to calculate the surface area of Cone roof tank.
ID is 6.0 Mtr.
Height is 5.0 Mtr.
Insulation thickness is 50 MM.
How much the surface area of Shell and cone roof.what is the method of calculation.
Moreover,roof slope is 1:6
One more question How do we know top of floating roof of a tank is cone or Dome.
Is there any general way to know ?

Rgds,
Aligahk06

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3. Member

Join Date
Jul 2009
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Below are the formulas for cone and dome roof areas.
surface area of Cone = π *r*s
surface area of Dome =2*π*r*h
Height of dome h = ( Rr²-r²)^½
s = slant height of cone

Cone roof is specified by angle with horizontal whereas Dome roof is specified by Dome radius.

Hope this helps.

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