1. Reduction factors given in Section 4.8 of ASCE 7-02 & in Section 1607.9.1 of IBC-2003 are:-
a) Different
b) Same
c) Vary in some cases
d) There is no reduction factor in Section 4.8 of ASCE 7-02
Explanation: Both have same reduction factor which is L = Lo(0.25 + (15/((KLL*AT)0.5))).
2. What is the minimum limit of influence area (in sq. ft) till which live loads can be reduced?
a) 100
b) 200
c) 300
d) 400
Explanation: From the equation of reduction factor, it can be shown that the lower limit is 400sq.ft.
3. In the case of a structural member supporting more than one floor with load exceeding 100psf., what is the maximum permitted reduction %?
a) 10
b) 15
c) 20
d) 25
Explanation: In buildings supporting more than one floor, studies have shown that rarely it is loaded (a floor) with more than 80% of its design load.
4. Loads used to obtain column design forces and to obtain beam design forces are:
a) Necessarily same
b) Necessarily different
c) Most likely same
d) Most likely different
Explanation: This happens because the reduction factor are most likely to be different.
5. When column supports the top floor of a building, then live load reduction is:-
a) Permitted
b) Not permitted
c) Depends upon type of beam
d) Depends upon amount of load
Explanation: When column support a floor, it should be thought of as supporting a single floor only.
6. Live load element factor KLL remains constant for all types of structure.
a) True
b) False
Explanation: Live load element factor KLL depends upon type of structure in question.
7. With the allowable stress method, which conditions are computed?
a) Most severe loading conditions and inelastic stresses
b) Most severe loading conditions and elastic stresses
c) Feeble loading conditions and inelastic stresses
d) Feeble loading conditions and elastic stresses
Explanation: This method computes most severe loading conditions and elastic stresses but appreciably below the ultimate stresses.
8. Allowable stress method considers which type of loadings?
a) Simultaneous
b) Non- simultaneous
c) Mixture of both
d) Only dead loads
Explanation: It considers simultaneous loading possibilities to determine most severe loading conditions.
9. Live load and roof live loads are represented by the same symbol.
a) True
b) False
Explanation: L represents live load, while Lr is used to represent roof live load.
10. 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.