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Day 29-Oct 17-worksheet-PWD-Working stress method&PSC intro.

Authored by WINCENTRE CLASSES

Engineering

1st - 5th Grade

Day 29-Oct 17-worksheet-PWD-Working stress method&PSC intro.
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The modular ratio used in the working stress method partially accounts for the effect of —

Shrinkage of concrete

Elastic shortening

Creep of concrete

Fatigue of steel

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For M 25 concrete, the permissible bending compressive stress σcbc as per WSM is —

6 N/mm²

8.5 N/mm²

9 N/mm²

11.5 N/mm²

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In prestressed concrete, the force is transmitted to concrete by bond between steel and concrete in —

Post-tensioned system

Pre-tensioned system

Centrally tensioned system

Load-balanced system

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A reinforced concrete column has 1 % steel and modular ratio = 10. The ratio of load carried by steel to that carried by concrete (Ps/Pc) is —

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The critical depth of neutral axis for Fe 415 steel under WSM is —

0.40 d

0.289 d

0.253 d

0.33 d

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In WSM, the stress–strain curve of concrete is assumed to be linear up to the permissible stress.

True

False

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The modular ratio (m) decreases as the grade of concrete increases.

True

False

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