The creep coefficient i.e. the ratio of ultimate creep and elastic strain after

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Question
The creep coefficient i.e. the ratio of ultimate creep and elastic strain after
Options
A. 7 days is 2.2
B. 28 days is 1.6
C. 365 days is 1.1
D. all the above.

Correct Answer

all the above.

Structural Design Specifications problems

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3. The concrete is deemed not to comply with the strength requirements if the strength is less than the greater of
Options
A. characteristic strength minus 1.35 times the standard deviation
B. 0.8 times the characteristic strength
C. the average strength of all the samples is less than the characteristic strength plus times the standard deviation.
D. all the above.

4. For heavily reinforced concrete member, the nominal maximum size of the aggregates should be restricted to
Options
A. 5 mm less than the minimum clear distance between the main bars
B. 5 mm less than the minimum cover to the reinforcement
C. smaller of (a) and (b)
D. greater of (a) and (b)

7. The depth 'd' of webs without horizontal stiffeners and consisting of tongue plates is taken lesser than the depth of the girder between the flanges less the sum of the depth of the tongue plates, and
Options
A. eight times the sum of the thickness of tongue plates
B. six times the sum of the thickness of tongue plates
C. four times the sum of the thickness of tongue plates
D. None of the above.

9. Pick up the correct statement regarding columns.
Options
A. The cross sectional area of longitudinal reinforcement, should not be less than 0.8% nor more than 4% of its gross sectional area
B. The minimum of longitudinal bars provided in rectangular and circular columns are 4 and 6 respectively
C. In helically reinforced column, the minimum number of longitudinal reinforcement should be six
D. If the effective length of a column is less than three times its lateral dimension, it is generally called a pedestal
E. All the above.

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