How do you estimate the size of a roll of carpet?
We have a couple of carpet roll remnants in a storage unit and need to recarpet some rooms. I need to know if the remnants are large enough. It seems silly to unroll each roll of carpet just to measure. Is there an easy way to estimate the area of carpet remaining on each roll?
Digging out my long forgotten 6th grade geometry, I know I could estimate each carpet ring using (pi)x(diameter)x(length), but I never see our carpet guys using calculators. Do flooring folks have some easy method of estimate rolls of flooring?
I found a reference posted here:
http://mathforum.org/library/drmath/view/56481.html
to make the calculation but I think it’s more complicated than it needs to be. You could probably get a good estimate by measuring the diameter of each winding of carpet and then multiply that by pi. This will give you the circumference for each winding which will be your linear length when it’s unrolled. Add up all your winding "lengths" and you’ll have close to the full length. Also, you want to measure the diameter to the underside of the carpet so you don’t overestimate the diameter.
If the rolls are very big and have too many windings to measure each, you could further simplify it by counting the number of windings and measuring the inner and outer windings and just evenly divide it out.
?
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Sorry but you need to measure the room and then the carpet, you don’t want to jack it up! Remember, when measuring carpet make it 1/4 of an inch short on all sides to leave room for baseboards!
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well u could unroll it
or do some rather compicated geometry equations
id unroll it
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We own a carpet store. There is no easy way to be sure your remnants will fit. You need to measure your room exactly, including closets, offsets and into the doorways. Then you need to measure the carpet length and width at both ends (it may not be cut evenly). You also need to roll out the pieces to check for damage from storage (roll marks, etcetera, which you may need to steam out). Good luck.
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Tape string around & around each circle. Measure string.
Unroll & measure would be the most accurrate.
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I found a reference posted here:
http://mathforum.org/library/drmath/view/56481.html
to make the calculation but I think it’s more complicated than it needs to be. You could probably get a good estimate by measuring the diameter of each winding of carpet and then multiply that by pi. This will give you the circumference for each winding which will be your linear length when it’s unrolled. Add up all your winding "lengths" and you’ll have close to the full length. Also, you want to measure the diameter to the underside of the carpet so you don’t overestimate the diameter.
If the rolls are very big and have too many windings to measure each, you could further simplify it by counting the number of windings and measuring the inner and outer windings and just evenly divide it out.
References :