The thickness of the steel exposed to weather and accessible for repainting, sho

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Question
The thickness of the steel
Options
A. exposed to weather and accessible for repainting, should be not less than 6 mm
B. in main members not directly exposed to weather should not be less than 6 mm
C. in secondary members not directly exposed to weather shall be not less than 4.5 mm
D. All the above.

Correct Answer

All the above.

Structural Design Specifications problems

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5. Pick up the correct statement from the following:
Options
A. Net sectional area of a tension member is its gross area less deductions for holes
B. Gross diameter of river hole is 1.5 mm in excess of its normal diameter if it is greater than 25 mm
C. Gross diameter of the rivet hole is 2.0 mm in excess of its normal diameter if it is greater than 25 mm
D. The total deduction area for the holes is obtained by the product of the thickness and sum of the diameters of the holes in any chain across the member
E. All the above.

7. The concrete may be accepted if the average equivalent cube strength of the cores, is at least 85% of the cube strength of the concrete grade at the specified age and no individual core possesses strength less than
Options
A. 90%
B. 85%
C. 80%
D. 75%
E. 70%

8. Pick up the correct statement from the following:
Options
A. The unit weight of plain concrete is assumed as 2400 N/m³
B. The unit weight of reinforced concrete is assumed as 2500 N/m³
C. The dead load includes self weight of the structural member plus weight of finishes and walls or partitions
D. All the above.

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