(1.76 Yards.)--12ftx12ft=144Sq ft-----4in=.33ft-------144sq ft x.33ft=47.52 cubic ft
there are 27 cubic ft in a cu yd---(3ft x3ft x3ft = 27 cu ft)
47.52/27 = 1.76
concrete is sold in cubic yards in the united states. I hope you are using a 1/4 inch diameter reinforce mesh. 1680 / 81 = 20.74 cubic yards without subtracting the mesh volume.
84 cubic inches!
It depends on how thick you want the concrete.
Volume of concrete needed = 4 x 12 x 1/3 = 4 x 4 = 16 cubic feet
Volume = 900 sqft * 1/12 ft = 75 cubic feet.
On average, concrete weighs about 12.5 pounds per square foot per inch thick. This can vary based on the type and density of the concrete mix.
2.15
14.81 yds
At least 28.5 cubic yards for a 6-inch depth.
For a 4-inch thick slab you will need at least 1.2 cubic yards.
625 times 0.5 = 312.5 cubic feet will be needed
Poured concrete has an R value of about 0.08/inch. Fiberglass batt has an R value of about 3.14/inch (blown fiberglass wall insulation is about 3.2/inch). From these values we can calculate that the equivalent insulating thickness of concrete would be about 3.5x3.14/0.08 = 137.4 inches. Note that concrete blocks have a somewhat better insulating value due to the incorporated air pockets. A 4" concrete block has an R value of about 0.2/inch An 8" concrete block has an R value of about 0.15/inch A 12" concrete block has an R value of about 0.1/inch
concrete is sold in cubic yards in the united states. I hope you are using a 1/4 inch diameter reinforce mesh. 1680 / 81 = 20.74 cubic yards without subtracting the mesh volume.
you can do the math: LXWXD DIVIDED BY 27
Where are 12 inch concrete blocks applied?
That depends on how deep (thick) you need it to be. You'll need 1 yard of concrete for every 3/4 inch of thickness of the pad.
84 cubic inches!