Given a structural design calling for 1-inch rebar with 2 inches of cover and a spacing of 2 inches center-to-center in a 9-inch thick wall section and the concrete is to be pumped through a 3-inch pipe, what is the nominal maximum aggregate size allowed by the ACI 318-08 code?

Answer is 3/4 inch.

Refer below.

Explanation:

The nominal maximum aggregate size allowed by the ACI 318-08 code is:

3/4 inch

3/4 inch

Explanation: Since the structural design for 1 inch rebar with 2 inches of cover and a spacing of 2 inches center-to-center in a 9-inch thick wall section and the concrete is to be pumped through a 3-inch pipe.

The nominal maximum aggregate size allowed by the ACI 318-08 code is " 3/4 INCH ".

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