SECTION 02821

F. Truss Rods: 3/8-inch diameter with threaded end to be utilized with a pressed steel industrial truss rod tightener. G. Concrete: (Class F1 as defined by ACI 318-14 Section 19.3.1) Portland Cement concrete having a minimum compressive strength of 3500 psi at 28 days, maximum water/cement ratio of 0.55, target air content of 5% +/- 1%. ................
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