The reinforced concrete beam is made usingtwo steel reinforcing rods of diameter 2 in.each. The modulus of elasticity for the steel isEst = 29000 ksi and the modulus of elasticity forthe concrete is Econc = 3600 ksi, determine themaximum tensile stress in the section. Take M= 60 kip.ft, b = 10 in., and d = 18 in.-concretedTwosteelreinforcingrodsSelect one:5.91 ksi.6.06 ksi.7.7 ksi.6.2 ksi.b

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Answered: The reinforced concrete beam is made…

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter5: Stresses In Beams (basic Topics)

Section: Chapter Questions

Problem 5.12.13P: A plain concrete wall (i.e., a wall with no steel reinforcement) rests on a secure foundation and...

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(ohsm 2) b. throps A simply supported beam has a rectangular cross-section of 50 mm wide and 120 mm deep. It is loaded as shown in Fig. 3b. Calculate the maximum stresses and draw the stress distribution diagram. The weight of the beam is assumed negligible. mot dit to sbutingsm s A - 2 m edband Im 10 kN B Fig. 3b 136 say xovbizon 2 m C
A plain concrete wall (i.e., a wall with no steel reinforcement) rests on a secure foundation and serves as a small dam on a creek (see figure). The height of the wall is h = 6.0 ft and the thickness of the wall is t = 1.0 ft. Determine the maximum tensile and compressive stresses o*!and trt, respectively, at the base of the wall when the water level reaches the top {d = h). Assume plain concrete has weight density ye= 145 lb/ft . Determine the maximum permissible depth dnuxof the water if there is to be no tension in the concrete.
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C-S at E: 40 mm TB The pipe assembly is subjected to the loads shown. Determine the state of 1 kN 30 mm stress at point A on cross-section E and show the results on a volume element. (Ans: 0A = -5.615 MPa, Ta = 5.372 MPa) 0.4 m X 0.3 m B 0.5 m 0.1 m 0.1 m 60" E 0.25 m 2 kN
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Question 2 : The composite beam consists of a wood core and two plates of steel. If the allowable bend ng stress for the wood is (oaiow )y = 20MPa and for the s(o aienl =130MPA zilow determine the maximum moment that can be applied to the beam. E, =11GPA , E= 200GPA Take: A = 125 mm A mm B = 75 mm M 20 mm- B mm 20 mm Solution : E 200(10" E 1110° The width of steel must be increased to an equivalent width for wood: Page 1 18.182 W. mm

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