SOLUTION: I'm building a kiln. How many 4"x8" bricks are needed to build the pit, size 8' in diameter by 4' high?

Question 838433: I'm building a kiln. How many 4"x8" bricks are needed to build the pit, size 8' in diameter by 4' high?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
I'm building a kiln. How many 4"x8" bricks are needed to build the pit, size 8' in diameter by 4' high?
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You can calculate the area.
For the bottom, it's {{pi*r^2 = 16pi}}} sq ft
= sq inches
Each brick is 32 sq inches
=~ 226.2 bricks on the bottom
but you have to take into account that they can't all fit into a circular area.
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For the sides:
sq inches
You only gave 2 dimensions for the bricks. If the 4 by 8 faces from the sides, then you need 4608*pi/32 bricks
=~ 452.4 bricks
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If this is for actual construction, get a few extra.
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