TEEL FOR CONCRETE AND mAsONRy: II. FOR SIZE MO LOCATION OF ROOF. FLOOR MO WALL OPENINGS. 2. CONCRETE SHALL HAVE A 141NROf COMPRESSIVE STRENGTH SEE ARCHITECTURAL. MECHANICAL MO ELECTRICAL DRAWINGS. FRAME AFTER 28 DAYS EWA! TO OR GREATER THAN 3,000 PSI. 2. REINFORCING BARS: ASTM A615. GRADE 60. ALL REINFORCIN