2007-01-13 06:30:52 · 4 answers · asked by Debra S 1 in Home & Garden ➔ Garden & Landscape
Just go out and buy a a bag of concrete mix. It should say on the bag what it covers. I would worry more about the type of concrete. Anyone can pull out a calculator and do math, but if you get the wrong kind, the math will be how much does it cost to replace this.
2007-01-13 06:38:07 · answer #1 · answered by RB 3 · 0⤊ 0⤋
Length: 75 feet = 25 yards
Depth: 1 foot = 1/3 yards
Width: 4 inches = 1/3 feet = 1/9 yards
Volume = Length * Width * Depth = 25 yards * 1/9 yards * 1/3 yards= 25/27 cubic yards = .925925... cubic yards.
Unless there's a different meaning to "cubic yard volume" than I understand.
Does this help?
2007-01-13 14:41:49 · answer #2 · answered by The Iron Star 2 · 1⤊ 0⤋
You know how much now. Remember,Footings shall be supported on undisturbed natural soils or engineered fill which
is compacted in two foot lifts. Minimum specified compressive
strenght of the concrete shall be 2500 to 3000 at 28 days psi.
When you order the concrete(that's to much to hand mix) tell
them you want at least 2500# mix. If your area is subject to freezing the concrete must be air entrained.Total air content
shall not be less than 5% or more than 7%.
It is very important to start off with the right footings.
Good Luck
2007-01-13 15:24:24 · answer #3 · answered by Lionman 3 · 0⤊ 0⤋
It is 25 cubic ft so the cubic yd is 0.925926
2007-01-13 14:39:53 · answer #4 · answered by sentrysharpshooter 2 · 1⤊ 0⤋