10.28 A reinforced concrete beam has a cross-section as shown in figure 10.22. The allowable tensile stress in the steel is 120 MPa and the allowable compressive stress in the concrete is 6 MPa. If it is to be an economic section and the modular ratio is 15, calculate (a) the diamater of the three reinforcing rods; (b) the total moment of resistance of the beam. 550 mm 75 to00 200 Figure 10.22 (29,8 mm; 106,3 kN.m] 400 mm

10.28 A reinforced concrete beam has a cross-section as shown in figure 10.22. The allowable tensile stress in the steel is 120 MPa and the allowable compressive stress in the concrete is 6 MPa. If it is to be an economic section and the modular ratio is 15, calculate (a) the diamater of the three reinforcing rods; (b) the total moment of resistance of the beam. 550 mm 75 to00 200 Figure 10.22 (29,8 mm; 106,3 kN.m] 400 mm

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter1: Introduction

Section: Chapter Questions

Problem 1.5.6P: The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular...

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10.28 A reinforced concrete beam has a cross-section as shown in figure 10.22. The
allowable tensile stress in the steel is 120 MPa and the allowable compressive
stress in the concrete is 6 MPa. If it is to be an economic section and the
modular ratio is 15, calculate (a) the diamater of the three reinforcing rods;
(b) the total moment of resistance of the beam.
550 mm
75
o00
200
Figure 10.22
(29,8 mm; 106,3 kN.m]
400mm

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