309. The ratio of the strength of compression members with helical reinforcement to those having lateral lies, is
A.1.02
B.1.03
C.1.04
D.1.05

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310.  Pick up the correct statement from the following:
A. all compression members are designed for a certain minimum eccentricity
B. for its neutral axis to be outside the section, the axial load on the column must be larger compared to bending
C. for neutral axis to be inside the section, the bending should be large as compared to axial loads
D. all of these

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311. When the neutral axis lies along one edge of the section,the strain varies from
A. 0.0020 at the highly compressed edge to zero at the opposite edge
B. 0.0025 at the highly compressed edge to zero at the opposite edge
C. 0.0030 at the highly compressed edge to zero at the opposite edge
D. none of these

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312.  For a column subjected to maximum compression at one edge and zero at the other edge, intersects the uniform strain line at a depth of from the highly compressed edge where D is the diameter of column
A. DI7
B. 2DI7
C. 3DI7
D. 5D/7

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313.  The reinforced concrete wall with a greatest lateral dimension exceeding four times the lateral dimension may be designed as column provided vertical reinforcement is not less than
A.0.20%
B.0.30%
C.0.40%
D.0.50%

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314.  Vertical and horizontal reinforcement in reinforced concrete walls, shall be spaced not further apart than
A. twice the thickness of wall
B. three times the thickness of wall
C. four times the thickness of wall
D. five times the thickness of wall nor 450 mm13.

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