Which statement best describes the standard shoring weights used for design calculations?

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Multiple Choice

Which statement best describes the standard shoring weights used for design calculations?

Explanation:
The main idea is using standard unit weights (densities) for quick dead-load estimates in shoring design. For typical design calculations, the common reference values are about 150 pounds per cubic foot for concrete, about 490 pcf for steel, and about 35 pcf for wood. This combination matches the well-established densities engineers rely on when sizing shoring systems. That’s why the choice with concrete near 150 pcf, steel near 490 pcf, and wood near 35 pcf is the best fit. The other options mix values that aren’t representative of these materials—concrete around 350 pcf or 200 pcf is far heavier than usual, steel at 900 pcf is not correct for structural steel, and wood at 120 or 600 pcf is outside typical wood densities.

The main idea is using standard unit weights (densities) for quick dead-load estimates in shoring design. For typical design calculations, the common reference values are about 150 pounds per cubic foot for concrete, about 490 pcf for steel, and about 35 pcf for wood. This combination matches the well-established densities engineers rely on when sizing shoring systems.

That’s why the choice with concrete near 150 pcf, steel near 490 pcf, and wood near 35 pcf is the best fit. The other options mix values that aren’t representative of these materials—concrete around 350 pcf or 200 pcf is far heavier than usual, steel at 900 pcf is not correct for structural steel, and wood at 120 or 600 pcf is outside typical wood densities.

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