Q:

# How much does a cubic yard of asphalt weigh?

A:

One square yard of asphalt that is 1 inch thick weighs 110 pounds, so 36 inches thick is 3,960 pounds per cubic yard, which is nearly 2 tons. A total of 1,548 tons of asphalt makes a 1-mile stretch of road 24 feet long at a thickness of 2 inches.

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One ton of asphalt, at 2 inches thick, makes 8.78 square yards of roadway. At 1 inch thick, the same asphalt makes more than 17 square yards.

The first true asphalt road in the United States was laid in front of city hall in Newark, N.J., in 1870 by Belgian chemist Edmund J. DeSmedt. His design was based upon similar pavement placed on a French highway in 1872. DeSmedt also paved Pennsylvania Ave. in Washington, D.C.

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## Related Questions

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A yard of river rock weighs 2,700 pounds and is equivalent to 1.35 tons, according to Cedar River Garden Center. A typical skid loader delivers a yard of river rock in two scoops.

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In general, load-bearing blocks must be able to withstand 2,500 to 3,000 psi (pounds per square inch) upon manufacture. However, since concrete blocks come in a range of sizes and shapes, their load-bearing capacity varies, therefore builders should test each specific type of block they plan to use.

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The average cinder block, which measures 8 inches wide by 8 inches tall by 16 inches long, weighs approximately 36 to 40 pounds. Factors such as block shape — which can include solid, semisolid, stretcher and open cell — and block material determine the actual weight.