A treatise on concrete, plain and reinforced : materials, construction, and design of concrete and reinforced concrete; 2nd ed. . Fig. 145. Reinforcement of la Continuous Beam. {See p. 452.) The maximum diameter of stirrups which can be used by these assump-tions without danger of slipping is determined by the bond and can befigured by the formulas given below. Leti = diameter of stirrup = area of stirrup = circumference of stirrup bar. 454 A TREATISE ON CONCRETE d = depth from surface of beam to center of tension = allowable bond stress per unit of surface of and Cj
A treatise on concrete, plain and reinforced : materials, construction, and design of concrete and reinforced concrete; 2nd ed. . Fig. 145. Reinforcement of la Continuous Beam. {See p. 452.) The maximum diameter of stirrups which can be used by these assump-tions without danger of slipping is determined by the bond and can befigured by the formulas given below. Leti = diameter of stirrup = area of stirrup = circumference of stirrup bar. 454 A TREATISE ON CONCRETE d = depth from surface of beam to center of tension = allowable bond stress per unit of surface of and Cj, = constants to use in formulas (39) to (42).Then for vertical stirrup \\ith straight upper end.* ^ „ u A _^ — <^— < i Cgd (39) For round or square stirrups — = i»j Hence i< C,d For rods inclined at 45° the above formulas change tofi <^ Cf^d for round or square sections A _and — < ^ Cj,J for other shapes. (40) (41)(42) The table below gives the values of C, and Cj, for different values oftension and bond when units are inches and pounds. Valties of Constants to Use in Formulas (39) to (42.
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