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The two general ingredients in concrete are _______. Select two.

Prolonged moist curing leads to lower concrete strength.

Grade 40, 60, and 75 reinforcement have minimum ultimate tensile strengths of 40 ksi, 60 ksi, and 75 ksi, respectively.

Which two tests are generally used to test the tensile strength of concrete?

Given that dead load = 40 psf, live load = 75 psf, roof live load = 30 psf, snow load = 50 psf, and wind load = 15 psf, determine the largest factored load.

Given that dead load = 20 psf, live load = 95 psf, roof live load = 20 psf, snow load = 50 psf, and wind load = 30 psf, determine the largest factored load.

At very slow loading rates, the strength of concrete increases.

Plain (non-reinforced) concrete has an assumed unit weight of _______.

The long term strength of concrete that is hot cured will be _______ concrete that is cold cured.

Flat-plate floors are widely used in apartments because the underside of the slab is flat and can therefore be used as the ceiling of the room below.