# Structural Analysis Questions and Answers – Analysis of Frames : Sidesway-I

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This set of Structural Analysis Multiple Choice Questions & Answers (MCQs) focuses on “Analysis of Frames : Sidesway-I”. AB = 12m, BC = 15m, CD = 18m
Load of 40 kN is acting at joint B as shown.
EI is constant throughout the frame.
All force options are given in KN and all moment options are given in KN-M.
FEM represent fixed end moments.

1. This beam is a non – sway frame.
State whether this statement is true or false.
a) true
b) false

Explanation: This frame is a sway frame. Members and loading are unsymmetrical.

2. What will be the value of FEMBC?
a) 80
b) 0
c) -160
d) 160

Explanation: No moment or force is acting on beam BC. The 40KN force will be considered in joint equilibrium.

3. What will be the value of rotation at point A?
a) 137.1/EI
b) -137.1/EI
c) 0
d) 100/EI

Explanation: There won’t be any rotation at point A as it is a fixed support.

4. How many deflection unknowns will be there in this case for which we would need equations?
a) 0
b) 1
c) 2
d) 3

Explanation: Initially, there will be 3 displacement unknowns, but all but of them will come out to be zero as members are always considered inextensible.

5. How many unknowns will be left finally which is non-zero?
a) 0
b) 1
c) 2
d) 3

Explanation: Rotation at points B and C and displacement of beam BC will be left finally to be calculated from equations.

6. How many total slope deflection equations will be written in this question?
a) 8
b) 6
c) 4
d) 3

Explanation: 3 members are there and non joint has a zero moment, so there will be 6 sde equations.

7. What will be the FEMAB ?
a) 80
b) -80
c) 0
d) 160

Explanation: No load is acting on the member AB and same goes for member CD.

8. Which of the following set of points should be chosen to generate extra equations?
a) A and B
b) B and C
c) C and D
d) D and A

Explanation: All unknown will come in account if we conserve moment about points B and C.

9. What will be the value of shear in beam AB?
a) mBA + mAB/12
b) mBA + mCB/12
c) mBA + mBC/12
d) mAB + mBC/12

Explanation: Separate out the beam AB and conserve moment about any one of the ends.

10. What will be the value of shear in beam CD?
a) mBA + mCA/12
b) mBA + mCB/18
c) mBA + mBC/18
d) mCD + mDC/18

Explanation: Separate out the beam CD and conserve moment about any one of the ends.

11. What will be the value of rotation at point B?
a) 438.81/EI
b) -137.1/EI
c) 0
d) 136.18/EI 