A rectangular concrete beam measures 12 in. wide and has an effective depthof 18 in. Compression steel consisting of two No. 8 (No. 25) bars is located2.5 in. from the compression face of the beam. If f.60,000 psi, what is the design moment capacity of the beam, according to theACI Code, for the following alternative tensile steel areas? (a) A, = three No. 10(No. 32) bars in one layer, (b) A, = four No. 10 (No. 32) bars in two layers, (c)A, = six No. 9 (No. 29) bars in two layers. (Note: Check for yielding of com-pression steel in each case.) Plot M, versus p and comment on your findings.= 4000 psi and f, =%3D

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Answered: A rectangular concrete beam measures 12…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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determine the minimum thickness of the steel bar. answer set c only
A beam carrying an allowable actual moment of -38 KN- m is reinforced as shown. If the the concrete is normal weight and f'c = 25MPa and fy = 420MPa. Determine the following: a. The cracking moment of the beam. b. The transformed moment of Inertia. c. The actual tension steel stress. d. Check the stress if it is correct by force checks. mm www.009 4-020 О 140 mm 300 mm 170 mm * 170 mm: ww.08 ✓ 60 mm
A. Beams Analysis - Determining Moment Capacity for beam (Under-Reinforced, Over-Reinforced, Balanced Conditions) 3 #19 -350 mm- 520 mm 600 mm 80 mm *For the problem above, use f'c = 28MPa and Fy = 414MPa. C. What is the depth of the compression block "a"? d. What is the stress in the steel fs? How about the stress in f's?
Time left 0:16:22 (CLO 1, 2)Determine the stress in the Aluminum rod (Psi) after the load 142 (kips) is applied. The light rigid bar ABCD is pinned at B and connected to two vertical rods. Assuming that the bar was initially horizontal and the rods stress-free. Steel L = 3 ft A = 0.5 in? E = 29 x 10° psi 4 ft - Aluminum P. 2 ft 2 ft-> L= 4 ft A = 0.75 in? E = 10 x 10° psi %3D
F (kN)=36 L1 (m)= 37.0053 Eal (GPa)=74
5. The rod bar shown has steel, brass, and aluminum sections. Axial loads are applied at cross sections A, B, C and D. The allowable stresses are 125 MPa in steel, 70 MPa in the brass, and 85 MPa in the aluminum. Assume that the allowable stresses are the same for tension (T) and compression (C). (a) Determine the diameter required for the brass bar. (b) Determine the required diameter for the steel bar. (c) Determine the required diameter for the aluminum bar. Express your answer in millimeters. Steel Brass C Aluminum B A 100 kN 85 kN 200 kN 215 kN 0.5 m 0.5 m 0.5 m
A rectangular steel block is 3.2 inches long in the x-direction, 2.9 inches long in the y-direction, and 4.5 inches long in the z-direction. The block is subjected to a tri-axial loading of three uniformly distributed forces as follows: 48 kips tension in the x-direction, 65 kips compression in the y-direction, and 54 kips tension in the z-direction. If Poisson's ratio is 0.30 and E = 29 x 106 psi, find the uniformly distributed load that must be added in the x-direction to produced no deformation in the z-direction. Your final answer should include two decimal places
Please show your solution clearly thank you
The assembly consists of two posts AD and CF made of steel and having cross- sectional area of 1000 mm², and an aluminium post BE having a cross-sectional area of 1500 mm². If a central load P is applied to the rigid member ABC, determine the normal stress in each post. Take elastic modulus of steel and aluminium as 200 GPa and 70 GPa, respectively. PKN P [kN] -0.5 m- Last digit of Student ID 0, 1, 2, 3, 4 5,6,7,8,9 500 700 e.g. SID 21051234 P=700 A B -0.5 m C 0.4 m F Fig. 1-1 System with three posts Last digit
Part A The composite beam is made of steel (A) bonded to brass (B) and has the cross section shown. Epr = 100 GPa, Est = 200 GPa. The allowable bending stress for the steel is (oallow)st = 180 MPa, and for the brass (oallow )br = 54 MPa . (Figure 1) Determine the maximum moment M that can be applied to the beam. Express your answer to three significant figures and include the appropriate units. HA ? M = 111.01 kN • m Figure < 1 of 1 Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining 50 mm Provide Feedback 200 mm B M 175 mm
dae 11.25 kips st steel ∙Alum in um A fully bonded aluminum Outer shell and Steel inner core bar is axially loaded. Find the ✓1.25 kips normal stress for the alum', num outer shell. Answer in ksi Given: EA = 11,000 ksi Al Est = 29,000 ks; XAL = 13.5 x 10-6 Y OF Xst = 6.5 x 10-6 1/F dAl = 1.0 in. dst = 0.25 in. AT = 65 °F

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