17. Equation 3.15 was generalized by Yudhbir et al. (1983) by replacing the unity on the right side by the constant A. Permitting A to vary between 1 and 0 offers a continuous variation of rock mass quality in the criterion of failure. They propose linking A to Barton's Q (see Chapter 2) according to the relation A = 0.0176QM. (a) Find a corresponding relationship between A and RMR. (b) Based on the answer to part (a), use Equation 3.15 to express th major principal stress as a function of confining pressure for a sandstone with M = 0.65, N = 5, qu= 2.0 MPa, and RMR = 50. C

17. Equation 3.15 was generalized by Yudhbir et al. (1983) by replacing the unity on the right side by the constant A. Permitting A to vary between 1 and 0 offers a continuous variation of rock mass quality in the criterion of failure. They propose linking A to Barton's Q (see Chapter 2) according to the relation A = 0.0176QM. (a) Find a corresponding relationship between A and RMR. (b) Based on the answer to part (a), use Equation 3.15 to express th major principal stress as a function of confining pressure for a sandstone with M = 0.65, N = 5, qu= 2.0 MPa, and RMR = 50. C

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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Concept explainers

Crack Detection

Concrete materials are meant for supporting structures, building foundations and they act as several load-bearing structures. Over time, due to environmental conditions, and based on the constituent materials used, concrete materials are subjected to a great degree of distress. Corrosion of the reinforcement bars due to chemical influences, uneven base, earthquake, drying shrinkages, and alkali-aggregate reactions are some of the reasons for concrete distress.

Question

Exercises at the end of the third chapter of Goodman's book Introduction to Rock Mechanics

σ 1,2
(3.15)
qu
The constants N and M will be determined by fitting a curve to the family of
points
=1
σy
qu
*
1.p
qu

17. Equation 3.15 was generalized by Yudhbir et al. (1983) by replacing the
unity on the right side by the constant A. Permitting A to vary between 1
and 0 offers a continuous variation of rock mass quality in the criterion of
failure. They propose linking A to Barton's Q (see Chapter 2) according to
the relation A = 0.01760M.
(a) Find a corresponding relationship between A and RMR.
(b) Based on the answer to part (a), use Equation 3.15 to express th
major principal stress as a function of confining pressure
sandstone with M = 0.65, N= 5, qu = 2.0 MPa, and RMR = 50.
a

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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