RCC Structures Design - Section 1 (3)

Directions to Solve

This is a section which is filled with RCC Structures Design and this is
the part of this civil engineering. You can solve all the MCQs based on this topic.

17.

The advantage of a concrete pile over a timber pile, is

A.	no decay due to termites
B.	no restriction on length
C.	higher bearing capacity
D.	not necessary to cut below the water mark
E.	all the above.

Answer: Option E

Explanation:

No answer description available for this question. Let us discuss.

18.

If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width

A.	R + T
B.	T-R
C.	√R2 + T2
D.	R-T

Answer: Option C

Explanation:

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19.

For initial estimate for a beam design, the width is assumed

A.	1/15th of span
B.	1/20th of span
C.	1/25th of span
D.	1/30th of span
E.	1/40th of span.

Answer: Option D

Explanation:

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20.

A foundation rests on

A.	base of the foundation
B.	subgrade
C.	foundation soil
D.	both (b) and (c)

Answer: Option D

Explanation:

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21.

According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 grade concrete, is

A.	5 kg/cm2
B.	10 kg/cm2
C.	15 kg/cm2
D.	20 kg/cm2
E.	25 kg/cm2

Answer: Option A

Explanation:

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22.

In a beam the local bond stress S_b, is equal to

A.
B.
C.
D.
E.	None of these.

Answer: Option A

Explanation:

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23.

The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm², safe shear stress 5 kg/cm² and B.M. 24 mt,

A.	is safe in shear
B.	is unsafe in shear
C.	is over safe in shear
D.	needs redesigning.

Answer: Option B

Explanation:

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24.

A short column 20 cm x 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm² and 300 kg/cm², the Safe load on the column, should not exceed

A.	4120 kg
B.	41, 200 kg
C.	412, 000 kg
D.	none of these.

Answer: Option B

Explanation:

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RCC Structures Design - Section 1 (3)

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