Friday Night Math Problem
calculate the number of 4 x 8 foot sheets of insulation I need to cover the area of a 19 foot diameter circle, using as few sheet AND as few cuts at possible.
edit: cheating by using some on-line calculator is fine! (just give me the damn link) 
= new reply since forum marked as read
...but unless you specify which constraint is more important you can't expect just one answer.
I will toss out a guess at 12 sheets, you won't find a lower number unless you do a LOT more cutting.
Confession, I used a pad of graph paper and a compass.
Last edited Fri Aug 16, 2013, 02:28 AM - Edit history (1)
I found a graphic that roughly fits your situation, imagine if you will, or print out and draw the following:
Divide the 20 x 20 foot frame into five vertical slices four feet wide.
Two sheets each in the left and right-most vertical columns will take out their share of the circle (with some waste).
Two sheets laid horizontally and centered across the left-right horizontal axis will take out a center bar, like an "H" with the previous two.
This will leave two chunks of the circle above and below the horizontal H bar that each can be covered by three sheets laid out vertically.
This all comes out to two plus two plus two plus three plus three.
Equals twelve.
It cannot be better than that.
I was just thinking about you!
Haya-doin?
But noooooo.
It's Thursday, not Friday.
cool! that means I have another day this week to not get finished with the stuff I was trying to get done
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And what's this talk about studs?
Take that to cliffordu, right up there ^.
it is to place under an above-ground swimming pool
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I bought an above ground swimming pool kit that I have not yet had assembled.
Putting insulation underneath it never occurred to me,
Damm good idea - it will be done!
CC
ps: - it's 18 feet by 54 inches deep - gonna be nice next summer!
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CC
