You need to read the label instructions for coverage to be sure. Typically, a ready mix bag of concrete will cover less than 1 cubic foot (about 2/3), and you have 7 x 10 x 1/2 =35 cubic feet, so you will need 50-60 bags
It works out to about 13.1 bags for every inch deepyou're planning on.
100
144
152.54
Not enough information. 8x8 what?
18 bags (80 pounds) of quikrete for a 4 inch thick slab.
20
It works out to about 13.1 bags for every inch deepyou're planning on.
If you pour to a standard 4-inch thickness you will need 5.6 cubic yards.
2x2
If you use a standard 4-inch thickness you will need a minimum of 6.17 cubic yards.
I assume this might be to keep any dirty ground water from running into the pool.
10 x 10= 100, but divide by 3. 4 inches is one third of a foot. You need 33 and a third cubic feet of concrete. Mixed concrete is usually sold in cubic yards (3 ft x 3ft x3 ft- or 27 cu ft to a cubic yard) and you would need ABOUT 1.25 yards. If you want to mix your own by buying prepackaged concrete mix at the hardware store, you would need ABOUT 112 of the 40 pound bags, or ABOUT 56 of the 80 lb bags. See the link below for a handy calculator for home concrete. PS- sound like you might be pouring a patio or floor for a small shed. Be sure to use reinforcing wire mesh in the floor, or it may crack.
Your slab is slightly over 40 cubic feet. Home Depot sells a 60 pound redi-mix bag which contains 1/2 cubic foot. You will need at least 80 bags. You will need slightly more (maybe 90-100) if you dig you area under the slab unevenly or too deep.
Where are 12 inch concrete blocks applied?
It depends on your climate and what the patio cover is made of.
I'm guessing it's a 6 foot by 8 foot patio (but 6 inches, not feet deep). {Note that typically something like a patio may only use 4 inch depth of concrete}. In the case of 6 inches, it should be specified as 6'x8'x6". A yard of concrete has a volume of 1 cubic yard, which is 3x3x3 = 27 cubic feet.For the patio depth of 6 inches converts to 0.5 feet, so we have 6 ft x 8 ft x 0.5 ft = 24 ft³. Take 24/27 = 8/9 or 0.8889 cubic yards [0.8889 yards of concrete].