This set of Structural Analysis Multiple Choice Questions & Answers (MCQs) focuses on “Loading Conditions for Allowable Stress Design”.

1. With the allowable stress method, which conditions are computed?

Explanation: This method computes most severe loading conditions and elastic stresses but appreciably below the ultimate stresses.

a) Simultaneous
b) Non- simultaneous
c) Mixture of both

3. Live load and roof live loads are represented by the same symbol.
State whether the above written statement is true or false.
a) True
b) False

Explanation: L represents live load, while Lr is used to represent roof live load.

4. Which of the following simultaneous loading conditions are not necessary to be considered for the most severe situations:-
a) D + F
b) D + H + F + L + T
c) D + H + F
d) 0.6D + W + H

Explanation: Necessary conditions are mentioned in Section 2 of ASCE 7-02. These can be matched from there.

5. With which loads are impact effects considered?
a) Rain
b) Snow
c) Live
d) Fluids

Explanation: Impact effects occur when live loads are quickly applied. So, they are considered with them only.

6. Which of the following load do not vary appreciably with time?
a) Snow
c) Rain
d) Wind

Explanation: There is never a permanent presence of snow on a structure, nor is that of rain and wind.

7. If a full dead load is not acting during an earthquake or a severe wind storm, then chances of overturning of building will:-
a) Decrease
b) Increase
c) Remain same
d) Depend upon case

Explanation: Earthquake and wind load acts in lateral direction, enhancing overturning. While, dead load acts in the vertical downward direction resisting overturning.

a) 0.60
b) 0.65
c) 0.70
d) 0.75

Explanation: In these conditions, most likely loads other than dead one do not achieve their maximum values simultaneously. This assumption is validated by load surveys.

a) Compulsory
b) Compulsory in some case
c) Depends upon the engineer

Explanation: Factor of 0.75 is only helping in listing the minimum conditions to be considered.

Sanfoundry Global Education & Learning Series – Structural Analysis.

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