The amount of rebar depends on the thickness of what you are making. All three dimensions.
20' by 26' by 5" requires at least 10 cubic yards of cement.
A minimum of 1.23 cubic yards at 4" thick.
Assuming you use the standard 4" depth, you will need at least 1.75 cubic yards.
28 feet by 32 feet by 6 inches thick requires at least 16.59 Cubic Yards.
To determine how much cement you need for a 20x20 foundation, first calculate the volume of the foundation in cubic feet. If the foundation is, for example, 4 inches deep, convert that to feet (4 inches = 1/3 feet), giving you a volume of 20 x 20 x (1/3) = approximately 133.33 cubic feet. Since concrete is typically measured in cubic yards, divide that by 27 (cubic feet in a cubic yard), resulting in about 4.94 cubic yards of concrete needed. For cement, you'll need about 1/3 of that volume in cement, which is roughly 1.65 cubic yards, but it's best to consult a concrete mix calculator for precise ratios based on your specific mix design.
As much as the engineered load calls for to perform the task the cement is required to perform.
20' by 26' by 5" requires at least 10 cubic yards of cement.
Three and one-quarter million cubic yards. There are 4,360,000 cubic yards of concrete in the dam
If you pour to a 4" depth, you will need at least 24.89 cubic yards. If you use a 6" depth, you will need at least 37.33 cubic yards.
A minimum of 1.23 cubic yards at 4" thick.
3 cubic feet or about one-tenth of a cubic yard. Cement is generally quantified in yards or cubic yards. It takes 27 cubic feet (3x3x3) to make a cubic yard. Therefore 3 cubic feet is about .111 or about one-tenth of a cubic yard (3 divided by 27).
To cast 41 cubic yards of concrete, you typically use a mix ratio of 1 part cement, 2 parts sand, and 3 parts gravel (aggregate). For 41 yards of concrete, you'll need approximately 6.8 cubic yards of cement, 13.6 cubic yards of sand, and 20.4 cubic yards of gravel. Adjust the mix based on specific project requirements or concrete strength needed. Always consider adding water based on the moisture content of the materials and desired workability.
Answer #1:9 cubic yards cement weight nearly 1260 lbs=============================Answer #2:Answer #1 is a very intriguing one. It says that 9 cubic yards (9 x 27 cubic feet)of cement weighs nearly 1,260 pounds. If so, then each cubic foot would weighnearly 5.2 pounds, which corresponds to nearly 8.3% of the density of water.So cement would float quite high in water. Mysteriously, it doesn't.I found one online conversion reference that says that1 cubic foot of Portland cement weighs 94.02 pounds.(94.02 pounds/cubic foot) x (9 cubic yards) x (27 cubic foot/cubic yard) = 22,847 pounds(rounded)Somehow, that sounds more like it.Also, if the question actually meant 'concrete, limestone with Portland cement"instead of 'cement', then the weight is nearly 60% greater than that.
13 1/3 cubic yards
Assuming you use the standard 4" depth, you will need at least 1.75 cubic yards.
You'll need 3.53 cubic yards of cement.
The capacity of a cement mixer typically ranges from 1 to 3 cubic yards, depending on the size and model. Smaller mixers may hold around 2 to 3 cubic feet, while larger commercial mixers can accommodate up to 10 cubic yards or more. It's essential to check the manufacturer's specifications for the exact capacity of a specific mixer model.