2007-10-13 04:59:16 · 9 answers · asked by klewiswa50 1 in Home & Garden ➔ Do It Yourself (DIY)
my husband is a senior special inspector (he does this for a living) and he said you need 3.25 cubic yards...i hope this helps!!!
2007-10-13 05:03:37 · answer #1 · answered by Savannah's Mommy! 4 · 0⤊ 0⤋
12' X 22' = 264 sq ft. Divide that by 3 (4" is 1/3 of a foot) and the answer is 88 cu ft. Divide that by 27 (3 X 3 X 3) and the answer is 3.26 cu yd. Allow about 5% over that and it would be 3.42 cu yd. Order 3 1/2 cu yds.
You need to have the surface well prepared; dirt hardened or at least tamped down; cover with a layer of sand. Make certain the frames are staked so they won't move on you. Concrete is heavy, and when it is dumped, there is a tremedous force pushing things out.
You should have 3 - 4 men to level it out with a screed (2" X 4", 12' long (the smaller dimension of your patio) then you will need a float (I never use one, just my Dad's old trowel), then trowel it smooth. Use tools to round the corner and to make those grooves or "cracks" across the concrete to prevent cracking. (You can buy those tools at Home Depot, Lowes, Ace, where ever if you don't already have them. If a one time thing, you won't run any more concrete, just opt for the cheaper ones.)
2007-10-13 13:06:56 · answer #2 · answered by Nothingusefullearnedinschool 7 · 1⤊ 1⤋
Chelby is correct but I'll give yout the simple formula for future reference.
Length X Width (12ft X 22ft) = 264
Times thickness in inches (264 X 4)= 1056
Divided by 300 (constant) = 3.32 cubic yards
"Give a man fish feed him for a day. Teach a man to fish feed him for a life"
You'll probably have to order 3.5 yards though. Always good to be some over anyway.
2007-10-13 12:09:39 · answer #3 · answered by pappy 5 · 0⤊ 1⤋
The other answers of 3.5 yards are correct.
It always takes a little more than the numbers suggest.
A helpful formula: length X width = sq. ft.
80 sq. ft. per yard at 4" thick.
60 sq. ft. per yard at 6" thick
40 sq. ft. per yard at 8" thick
I advise ordering from a ready mix company. 3.5 yards is a lot to hand mix.
Your time is better spent finishing the concrete than mixing it.
You will get a more consistent finish, a stronger patio and it is cheaper than ordering material in bulk or in bags.
If you know someone with tools and experience invite him over to help. There usually isn't enough time to learn how to finish concrete while it is setting.
Just as important is the tools. I have been finishing concrete for 40 years and I would not want to go to work with a bucket of new tools. Untill they are broken in they can be very frustrating to use.
One trick we use for new tools is to sand them (sandpaper) slightly rounding the working edges in order to simulate a used or broken in tool.
good luck
2007-10-13 19:51:58 · answer #4 · answered by Bruce Goss 2 · 0⤊ 0⤋
3.2592592 cubic yards. Order 2 1/2 cubic yards, better to have a little extra just in case.
2007-10-14 00:59:16 · answer #5 · answered by luther 4 · 0⤊ 0⤋
you will need 3 1/3 yards 12X23 divided by 3 = #cubic ft divide by27 # of cubic ft in a yard
2007-10-13 12:09:43 · answer #6 · answered by don c 2 · 1⤊ 1⤋
3.23 yards is exact it is always better to have a little more rather than being a bucket short.
2007-10-13 12:07:34 · answer #7 · answered by sam hill 4 · 0⤊ 0⤋
it comes out to 3.23 but order 3.5 yds. as most homeowners arent as fussy with their grades as those of us who do this everyday...even we order a little extra cause it costs a bundle to have them come back with more...
2007-10-13 13:50:07 · answer #8 · answered by Anonymous · 0⤊ 1⤋
what is a pation?
2007-10-13 15:22:08 · answer #9 · answered by evander 3 · 0⤊ 0⤋