Total concrete volume:
total concrete volume=length×width×depth
Total gravel volume:
total gravel volume=length×width×gravel depth
Total rebars length:
total rebars length=(length−2×edge rebar spacingrebar spacing)×(width−2×edge rebar spacing)×2
Rebar pieces:
rebar pieces=total rebars lengthsingle rebar length
Total forms length:
total forms length=2×(length+width)
Total costs:
total cost=total concrete volume×concrete price+total gravel volume×gravel price+total rebars length×rebar price+total forms length×form price