Civil Engineering - Theory of Structures

Exercise :: Theory of Structures - Section 3

21. 

The equivalent length is of a column of length L having both the ends fixed, is

A. 2L
B. L
C.
D.

Answer: Option C

Explanation:

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22. 

The moment of inertia of a rectangular section of width B and depth D about an axis passing through C.G. and parallel to its width is

A.
B.
C.
D.
E.

Answer: Option C

Explanation:

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23. 

A masonry dam (density = 20, 000 N/m3) 6 m high, one metre wide at the top and 4 m wide at the base, has vertical water face. The minimum stress at the base of the dam when the reservoir is full, will be

A. 75 N/m2
B. 750 N/m2
C. 7500 N/m2
D. 75000 N/m2

Answer: Option C

Explanation:

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24. 

The ratio of tangential and normal components of a stress on an inclined plane through θ° to the direction of the force, is :

A. sin θ
B. cos θ
C. tan θ
D. cos θ
E. sec θ

Answer: Option C

Explanation:

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25. 

For calculating the allowable stress of long columns is the empirical formula, known as

A. Straight line formula
B. Parabolic formula
C. Perry's formula
D. Rankine's formula.

Answer: Option B

Explanation:

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