Common use of Concrete Clause in Contracts

Concrete. Unless specified to the contrary in the Drawings, concrete design compressive strengths shall be as follows: All structural concrete 4,000 psi Pipe support concrete 2,900 psi Electrical duct encasement and 2,000 psi lean concrete backfill • Compressive strength (f’c) refers to strength at 3 days.

Concrete. Unless specified to the contrary in the Drawings, concrete a. Concrete design compressive strengths shall be as follows: Use f’c All structural concrete 4,000 psi Pipe support concrete 2,900 psi Electrical duct encasement and 2,000 psi lean concrete backfill • backfill b. Compressive strength (f’c) refers to strength at 3 28 days.