A reinforced concrete beam is shown in the figure below. 0.75-in, diameter rods Wo 20 in. 2.5 in. 8 ft- 8 ft 10 in. Part A Determine the maximum uniform distributed load wn that can be supported by the reinforced concrete beam if the allowable tensile stress for the steel is (Ost )allow = 30 ksi and the allowable compressive stress for the concrete is (oconc )allow = 3 ksi . Assume the concrete cannot support a tensile stress. Take Est = 29(10) ksi , Econe = 3.6(103) ksi Express your answer to three significant figures.

A reinforced concrete beam is shown in the figure below. 0.75-in, diameter rods Wo 20 in. 2.5 in. 8 ft- 8 ft 10 in. Part A Determine the maximum uniform distributed load wn that can be supported by the reinforced concrete beam if the allowable tensile stress for the steel is (Ost )allow = 30 ksi and the allowable compressive stress for the concrete is (oconc )allow = 3 ksi . Assume the concrete cannot support a tensile stress. Take Est = 29(10) ksi , Econe = 3.6(103) ksi Express your answer to three significant figures.

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter12: Composite Materials

Section: Chapter Questions

Problem 12.7P: Estimate the transverse tensile strength of the concrete in Problem 12.6.

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1. Shown is a composite plate joined together by rivets. The components consist of two tension bar plates that is % X 4 inch and riveted together by two splice plates which is 0.8 X 6 inch. Each rivet has a diameter of 25.4 mm. Considering that the allowable stress for the tension bar plates and splice plates is o=20.0 ksi, the allowable shear stress for the rivets is o=25.0 ksi and the allowable bearing stress on the rivets and splice plates is o=25.0 ksi. What will be the maximum permissible load P such that none of the allowable stresses will be exceeded? Splice Plates a-0.75 in Bar Lc =0.80 in. Bar P d = 1.0 in. b=4.0 in. Rivets 'e = 6.0 in.
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The modulus of elasticity of "reinforced concrete" in RC design, is O A. 420 GPa B. 200 GPa C. None () D. 220 GPa
Problem 2 A composite beam made of steel and concrete has the dimensions and layout shown below. Determine (a) the location of the neutral axis; (b) The maximum allowable positive moment for the beam cross-section; and (c) the maximum allowable negative moment for the beam cross-section. = 200 GPa and a yield stress oy, steel = = 25 GPa and a yield stress oy, concrete = 30 MPa. The steel has an elastic modulus Esteel 275 MPa. The concrete has an elastic modulus Econcrete Assume that the concrete cannot carry any tensile stress. 2500mm 100mm 10mm 260mm 6mm 100mm
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A rectangular steel block is 75 mm in the x-direction, 50 mm in the y-direction and 100 mm in the z direction. The block is subjected to triaxial loading consisting of three uniformly forces as follows: KN tension in the x-direction, 250 KN compression in the y-direction, and 240 KN tension in the z-direction. If u = 0.3 andE = 200 GPa, Determine the total resulting strain in the x- direction. %3D
(A)-Use the ultimate strength method to determine the design strength (Mu) for the beam shown in figure below, is limited in cross section for engineering reasons (fy = 400 MPa, fc = 25 MPa, a = 185 mm, fs=fy, d = 60 mm, D = 0.734). Assume design as doubly reinforced concrete. 400mm 300mm O O 2020 6025 00 (B)- In the working stress method, proved K= nfc/(fs+nfc)
! Required information A steel bar (Es= 210 GPa) and an aluminum bar (Ea = 70 GPa) are bonded together to form the composite bar shown. 8 mm 8 mm 8 mm Aluminum 24 mm -Steel Determine the maximum stress in steel when the bar is bent about a horizontal axis, with M= 56 N.m. The maximum stress in steel is - MPa.
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A RECTANGULAR ALUMINUM BLOCK IS 40mm LONG IN THE Y DIRECTION,20mm WIDE IN THE Z DIRECTION AND 25mm THICK IN THE XDIRECTION. IT IS SUBJECTED TO A TRIAXIAL LOADING CONSISTING OF AUNIFORMLY DISTRIBUTED FORCE OF Px=3kN (COMPRESSION), Py=4kN(TENSION) AND Pz=7kN (COMPRESSION) IN THE X, Y AND Z DIRECTIONSRESPECTIVELY. IF THE POISSON’S RATIO = 1/4 & E = 70 GPa,DETERMINE THE STRAINS IN THE X, Y AND Z DIRECTIONS. ALSODETRMINE A SINGLE DISTRIBUTED FORCE IN THE Y DIRECTION THEWOULD PRODUCE THE SAME X DEFORMATION AS THE ORIGINAL.