I plan to do the following.
10 x 22 slab in front of garage 220 sq ft.
6 x 12 shed floor 72 sq ft.
TOTAL = 292 sq feet.
All will be 4 inches thick. That means I get 81 sq feet per yard.
I planned to order 3.5 yards, but that's only 283.5 sq ft.
However, the shed is 6 ft on the outside, so the inside is a little
less, plus it has several posts that will mean a little less. So, I
guess I can say I really need about 70 sq ft.
With this in mind, I am short by 6.5 sq ft.
But, I plan to cover much of the ground with flat and small rocks that
I saved when I did built the shed from the post holes and other rocks
I keep. The shed floor will particularly get the rocks, because the
driveway will get some wire mesh, whereas the shed wont.
I am estimating that with the rocks I should be darn close. I intend
to make the end of my driveway form adjustable so if I am a little
short, or have extra concrete I can adjust to suit what I get. (It
dont have to be exactly 22 feet long).
Am I figuring this right, or should I order another 1/4 yard (it can
be ordered in 1/4 yard increments).
I should also mention that I may not have the soil leveled so it's
precisely 4 inches thick. Some spots may be a little more, others a
What would you do?
(I dont want a lot of waste either).