Bigfoot tech info: concrete calculator site map

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Our footing form and pier footing concrete volume calculations - great for DIY and contractors

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Volume calculations for concrete footing forms:
Model Volume of concrete Model Volume of concrete
BF20 1.75 cubic feet BF24 2.50 cubic feet
BF28 3.25 cubic feet BF36 6 cubic feet
BFT8 1.4 cubic feet
Concrete volume calculations for sono tubes:
Tube Diameter 6" 8" 10" 12" 14" 18"
Volume of Concrete / Unit of Tube Length
cu.ft. / ft. 0.196 0.349 0.545 0.785 1.067 1.767
cu.in. / ft. 339.3 603.07 941.76 1356.48 1843.78 3053.38
cu.metres / meter 0.018 0.032 0.050 0.071 0.097 0.161

Note: Volume is per foot of construction tube. For example:

  • 10" construction tube 6 feet long:

    6 ft x 0.545 cu.ft. / ft. (of tube length) = 3.27 cubic feet
    6 ft. x 941.76 cu.in. / ft. (of tube length) = 5,650.56 cubic inch
    1.8288 m. x 0.051 cu.m. / meter (of tube length) = 0.095 cubic metres

  • Using both Bigfoot Systems Footing Forms and construction tubes combined - Model BF24 with a 10 inch tube 6 feet long:
    6 ft. x 0.545 cu.ft. + 2.50 cu.ft. = 5.77 cubic feet (0.163 cubic meters) of concrete

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