FIGURES & TABLESππ(i)(iii)(iv)(v)Figure 1: Compression test on intact and jointed/discontinuous rock samplesWEATHERING DESCRIPTIONRESIDUAL SOIL; ORIGINAL TEXTURESTRUCTURE AND MINERALOGYCOMPLETELY DESTROYEDCOMPLETELY WEATHERED DECOMPOSEDAND FRIABLE, BUT ROCK TEXTURE ANDHIGHLY WEATHERED; WEATHERINGEXTENDS THROUGHOUT ROCKMASS ANDROCK MATERIAL IS PARTLY FRIABLEMODERATELYWEATHERED;SLIGHTLY WEATHERED; PENETRATIVEWEATHERING ON OPEN DISCONTINUITYSURFACES, BUT ONLY SLIGHTWEATHERING OF ROCK MATERIALFRESH, NO VISIBLE SIGN OF WEATHERINGOR FAINTLY WEATHERED WITHWEATHERING LIMITED TO SURFACE OFMAJOR DISCONTINUITIES0.004 0.010.04 0.10.4 1.0STRENGTH REDUCTION FACTORI0.281.0VIV STRUCTURE PRESERVEDIV=|||=I0.001 (d) Figure 1 shows rock samples being tested for their uniaxial compressivestrength (UCS). Some samples display fracture/weakness planes that are atdifferent orientation with respect to the loading axis (as shown by the arrows).The loading configuration of each sample is shown in (i) to (v). Answer thefollowing questions:Between samples (ii) and (iii) which one will display a lower strain atfailure?Between sample (ii) and (iv) which one will display a lower Poisson's ratio?Explain briefly why sample (i) and (ii) will exhibit almost similar strengths?Among the 5 samples (i) to (v), which sample will display the lowestcompressive strength? State reason for your answer☐

Part A Between the samples (ii) and (iii) sample (iii) will display lower strain at failure because…

(d) Figure 1 shows rock samples being tested for their uniaxial compressive strength (UCS). Some samples display fracture/weakness planes that are at different orientation with respect to the loading axis (as shown by the arrows). The loading configuration of each sample is shown in (i) to (v). Answer the following questions: Between samples (ii) and (iii) which one will display a lower strain at failure? Between sample (ii) and (iv) which one will display a lower Poisson's ratio? Explain briefly why sample (i) and (ii) will exhibit almost similar strengths? Among the 5 samples (i) to (v), which sample will display the lowest compressive strength? State reason for your answer

(d) Figure 1 shows rock samples being tested for their uniaxial compressive strength (UCS). Some samples display fracture/weakness planes that are at different orientation with respect to the loading axis (as shown by the arrows). The loading configuration of each sample is shown in (i) to (v). Answer the following questions: Between samples (ii) and (iii) which one will display a lower strain at failure? Between sample (ii) and (iv) which one will display a lower Poisson's ratio? Explain briefly why sample (i) and (ii) will exhibit almost similar strengths? Among the 5 samples (i) to (v), which sample will display the lowest compressive strength? State reason for your answer

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

Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can sustain.

Question

FIGURES & TABLES
π
π
(i)
(iii)
(iv)
(v)
Figure 1: Compression test on intact and jointed/discontinuous rock samples
WEATHERING DESCRIPTION
RESIDUAL SOIL; ORIGINAL TEXTURE
STRUCTURE AND MINERALOGY
COMPLETELY DESTROYED
COMPLETELY WEATHERED DECOMPOSED
AND FRIABLE, BUT ROCK TEXTURE AND
HIGHLY WEATHERED; WEATHERING
EXTENDS THROUGHOUT ROCKMASS AND
ROCK MATERIAL IS PARTLY FRIABLE
MODERATELY
WEATHERED;
SLIGHTLY WEATHERED; PENETRATIVE
WEATHERING ON OPEN DISCONTINUITY
SURFACES, BUT ONLY SLIGHT
WEATHERING OF ROCK MATERIAL
FRESH, NO VISIBLE SIGN OF WEATHERING
OR FAINTLY WEATHERED WITH
WEATHERING LIMITED TO SURFACE OF
MAJOR DISCONTINUITIES
0.004 0.01
0.04 0.1
0.4 1.0
STRENGTH REDUCTION FACTORI
0.28
1.0
VI
V STRUCTURE PRESERVED
IV
=
|||
=
I
0.001

(d) Figure 1 shows rock samples being tested for their uniaxial compressive
strength (UCS). Some samples display fracture/weakness planes that are at
different orientation with respect to the loading axis (as shown by the arrows).
The loading configuration of each sample is shown in (i) to (v). Answer the
following questions:
Between samples (ii) and (iii) which one will display a lower strain at
failure?
Between sample (ii) and (iv) which one will display a lower Poisson's ratio?
Explain briefly why sample (i) and (ii) will exhibit almost similar strengths?
Among the 5 samples (i) to (v), which sample will display the lowest
compressive strength? State reason for your answer
☐

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