This set of Structural Analysis Questions and Answers for Experienced people focuses on “Internal Loadings at a Specified Point-2”.

We have followed following sign convention in our questions.

Following sign convention for force direction is followed:-

In the following figure, point A has pin support, while point C has roller type support. Point B is a fixed end.
Following figure has been used in Q1-Q3.
All the options are given in KN and KN/M wherever applicable.
AB = 4m and BC = 8m.

1. What will be the internal force in y direction at joint B?
a) 10
b) 20
c) 30
d) 40

Explanation: Separate out the part between points B and C and balance the force along y direction.

2. What will be the internal force in x direction at joint B?
a) 0
b) 20
c) 30
d) 40

Explanation: Separate out the part between points B and C and balance the force along x direction.

3. What will be the internal moment generated at joint B due to above shown loading?
a) 80
b) 120
c) 240
d) 160

Explanation: It can be found out by balancing moment about point B in the part between points B and C.

Following figure has been used in Q4-Q9.
In the following figure AB=BC=CD=2m, and DE=EF=1m.
A is a fixed support while C and F are of roller type. B and D are hinges.
All the options are given in KN and KN/M wherever applicable.
BMD and SFD starts from point A.

4. What will be the internal force generated at hinge D due to the above loading?
a) 5
b) 10
c) 15
d) 20

Explanation: We will cut out the first part from point D to F (Since, D is a hinge). Now balancing moment about point F, internal force will come out to be 15KN.

5. What will be the internal force generated at hinge B due to the above loading?
a) 5
b) 10
c) 15
d) 20

Explanation: We can separate the part from point B to D. Now, we have internal load at D so, we can balance moment about point C and find out the force at point B.

6. What will be the support force due to point C?
a) 15
b) 20
c) 25
d) 30

Explanation: This can be found out by balancing force in the part between both the hinges.

7. What will be the support reaction generated by support A?
a) 25
b) 10
c) 15
d) 20

Explanation: This can be found out by balancing force in the part between joints A and B.

8. What will be the support reaction generated by support F?
a) 5
b) 7.5
c) 10
d) 15

Explanation: This can be found out by balancing force between points D and F.

9. What will be moment generated by support A?
a) 5
b) 7.5
c) 10
d) 12.5

Explanation: This can be found out by balancing moment between points A and C.

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