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n the 28th day after concrete was mixed, a 6.00-in-diame a compressive testing at a load of 145 000 lb. ) Determine the ultimate strength of the concrete, in lb/i ) Determine the allowable compressive stress with a fa ultimate strength. ) Determine the maximum permissible load that the ce

n the 28th day after concrete was mixed, a 6.00-in-diame a compressive testing at a load of 145 000 lb. ) Determine the ultimate strength of the concrete, in lb/i ) Determine the allowable compressive stress with a fa ultimate strength. ) Determine the maximum permissible load that the ce

Structural Analysis
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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Question 10.8 please

179% v - + 7 Annotate T| Edit Trial expired Unlock Full Version Q- ENGR 263 A A A 오 With the results in Exercises 10.1 through 10.4, plot the stress-strain curves for each material on a single stress-strain diagram. Compare ultimate strengths and moduli of elasticity. 10.6 With the results in Exercise 10.1, approximate the strain that remains if: (a) The specimen is initially tensioned to a stress of 15 000 lb/in and then unloaded. (b) The specimen is initially tensioned to a stress of 30 000 lb/in and then unloaded. (c) The specimen is initially tensioned to a stress of 45 000 lb/in and then unloaded. (d) The specimen is initially tensioned to a stress of 60 000 lb/in and then unloaded. 10.5 10.7. As shown in Tables A.3 and A.4, aluminum, concrete, copper, steel, and wood (Douglas fir) have unique moduli of elasticity. (a) Plot the slope of the modulus of elasticity for each material on a single stress-strain diagram (similar to that shown in Figure 10.7). (b) Identify the stiffest material of those examined. Simple Design 10.8 On the 28th day after concrete was mixed, a 6.00-in-diameter concrete cylinder failed in a compressive testing at a load of 145 000 lb. (a) Determine the ultimate strength of the concrete, in lb/in. (b) Determine the allowable compressive stress with a factor of safety of 5.0 against ultimate strength. (c) Determine the maximum permissible load that the concrete can carry using the strength design method. Use a strength reduction factor of 0.60 against ultimate strength.
Transcribed Image Text:179% v - + 7 Annotate T| Edit Trial expired Unlock Full Version Q- ENGR 263 A A A 오 With the results in Exercises 10.1 through 10.4, plot the stress-strain curves for each material on a single stress-strain diagram. Compare ultimate strengths and moduli of elasticity. 10.6 With the results in Exercise 10.1, approximate the strain that remains if: (a) The specimen is initially tensioned to a stress of 15 000 lb/in and then unloaded. (b) The specimen is initially tensioned to a stress of 30 000 lb/in and then unloaded. (c) The specimen is initially tensioned to a stress of 45 000 lb/in and then unloaded. (d) The specimen is initially tensioned to a stress of 60 000 lb/in and then unloaded. 10.5 10.7. As shown in Tables A.3 and A.4, aluminum, concrete, copper, steel, and wood (Douglas fir) have unique moduli of elasticity. (a) Plot the slope of the modulus of elasticity for each material on a single stress-strain diagram (similar to that shown in Figure 10.7). (b) Identify the stiffest material of those examined. Simple Design 10.8 On the 28th day after concrete was mixed, a 6.00-in-diameter concrete cylinder failed in a compressive testing at a load of 145 000 lb. (a) Determine the ultimate strength of the concrete, in lb/in. (b) Determine the allowable compressive stress with a factor of safety of 5.0 against ultimate strength. (c) Determine the maximum permissible load that the concrete can carry using the strength design method. Use a strength reduction factor of 0.60 against ultimate strength.
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