convert CY to tons

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convert CY to tons

Postby Humphreyd » Fri Apr 27, 2007 2:05 am

Please help with this
D1 gravel for road
7000 feet long 30' wide with 6"D1
7000' x 30' x 6" = 1,260,000 ( cubic inches? or cubic FT ?)
Do I divide or multiply by 12 to get cubic FT? and then divide or multiply by 27 to get CY then multiply or divide by 1.6 ( coefficent for D1 of tons per CY) to equal tons?????
thanks
drh
Humphreyd
 

Postby Dirtman » Sat Apr 28, 2007 11:48 am

D1 gravel for road
7000 feet long 30' wide with 6"D1
7000' x 30' x 6" = 1,260,000 ( cubic inches? or cubic FT ?)


It's neither cubic feet or cubic inches, but a mix. An easy way to obtain cubic feet is to let all factors be in feet. To convert inches to decimal feet, divide inches by 12, e.g., 6 inches / 12 = 0.5 feet.

So: 7000' * 30' * 0.5' = 105,000 cf (cubic feet)

Do I divide or multiply by 12 to get cubic FT? and then divide or multiply by 27 to get CY then multiply or divide by 1.6 ( coefficent for D1 of tons per CY) to equal tons?????


To obtain cubic yards from cubic feet, divide cubic feet by 27, so: 105,000 cubic feet / 27 = 3,888.89 cubic yards.

You have a volume to weight factor (D1) of 1.6, so: 3,888.89 cubic yards * 1.6 = 6,222.22 tons
Dirtman
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