There is no constant value for the ratio of the rebars and concrete volume.
The rebars depends on the structural designer's safety factor and
the factors affecting the framing like wind, earthquake and soil.
There is cubic volume or there is weight but not cubic weight.
To determine the pounds of concrete needed to repave a highway, you first need to know the total area to be repaved (in square feet) and the thickness of the concrete layer (in feet). Multiply the area by the thickness to get the volume in cubic feet, then convert that to cubic yards (1 cubic yard = 27 cubic feet). Finally, multiply the volume in cubic yards by the weight of concrete (approximately 4,000 pounds per cubic yard) to find the total weight in pounds.
concrete weight
the lightweight concrete weights are depends upon their aggregates.... basically the weight of lightweight concrete is 50lb/cubic feet
The weight of concrete typically averages around 150 pounds per cubic foot. Therefore, 9 cubic feet of concrete would weigh approximately 1,350 pounds (9 cubic feet x 150 pounds per cubic foot). This can vary slightly based on the specific mix of the concrete used.
Normal weight concrete weighs about 4000 lb. per cubic yard. Lightweight concrete weighs about 3000 lb. per cubic yard. If a truck is carrying 10 cubic yards, then the weight of the concrete is approximately 40,000 lb. The truck will weigh approximately 26,000 lb. for a total of 66,000 lb.
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In the United States, if you are buying concrete mixed up and ready to pour, it is typically sold by the cubic yard (3ft x 3ft x 3ft) volume. But they usually call this just a 'yard' of concrete, knowing that it is a cubic yard.
weight of 1 cubic mitre of concrete
To calculate the weight of a concrete slab measuring 24 x 24 x 2 inches, first determine the volume in cubic inches: 24 x 24 x 2 = 1,152 cubic inches. Since concrete typically weighs about 150 pounds per cubic foot, convert cubic inches to cubic feet (1,152 cubic inches ÷ 1,728 cubic inches per cubic foot = 0.6667 cubic feet). Finally, multiply by the weight of concrete: 0.6667 cubic feet x 150 pounds per cubic foot ≈ 100 pounds. Thus, the slab weighs approximately 100 pounds.
A cubic yard of concrete weighs the same underwater as it does on land, which is approximately 4,000 to 4,500 pounds. The weight is determined by the density of the concrete mix, not the surrounding environment.
4050 lbs