Please answer part a Stress- 10 psi50403020100Stress - 10³ psi0₁ -P100806040201000 lb/in.²Constant ratio a,:03 15:1Uniaxial810Axial strain-103 in./in.(a)Constant ratio 0₁:0₂ 8:1-1000 psi123000 psi-2000 psi₁. = 1 + NquUniaxial121620Axial strain - 103 in./in.(b)4000 lb/in²5000 lb/in.³142416Lateral pressure281832Figure 3.10 Stress difference versus axial strain curves as a function of con-fining pressure in triaxial compression experiments on sandstone (a) andnorite (b). [From Bieniawski (1972).]stresses are compressive. In practice, empirical curve fitting is the best proce-dure for producing a criterion of failure tailored to any given rock type. See, forexample, Herget and Unrug (1976). A satisfactory formula for many purposeswill be afforded by the union of a tension cutoff, 3 = To, and a power law(Bieniawski, 1974):(3.15)The constants N and M will be determined by fitting a curve to the family ofpoints 8. (a) For the sandstone of Figure 3.10, determine the value of op and Sip thatbest fits the peak strengths given. (The subscript p denotes "peak.")(b) Find best fit values of o, and Sir describing the residual strength of thesandstone.(c) Find values of M and N to express the peak strength of the sandstone inFigure 3.10 according to Equation 3.15.(d) Find , and Sip for the norite of Figure 3.10.(e) Find d, and Sir for the norite.(f) Find M and N for the norite.

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Answered: 8. (a) For the sandstone of Figure…

8. (a) For the sandstone of Figure 3.10, determine the value of op and Sip that best fits the peak strengths given. (The subscript p denotes "peak.")

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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