End-Semester Examination

Programme: B.Tech

Branch: Civil EngineeringCourse Title: Structural Analysis-III

Course Code: UCE- 351Session: 2014-15 (Jan 2015-May 2015)

Semester: 6thMax. Marks: 100

Time duration: 3 hrsNote: Attempt five questions in all, selecting one question each from the sections A, B, C and D. Section

E is compulsory. Assumed any missing data. No data book or code is allowed.Sr. No.QuestionMarks

1.

2.Section-A

Analyse the frame as shown in fig.-1 in which A and B end fixed and span BC carrying uniformly distributed load of 12KN/m and 20 KN at point D by slope deflection method.

(Fig.-1)Determine the vertical and the horizontal deflection at the free end of the bent shown in fig.-2.Assume uniform flexural rigidity EI throughout using unit load method.

(Fig.-2)20

20

34

Section-BDevelop the stiffness matrix for the the end loaded prismatic member AB with reference to the coordinates as shown in fig.- 3. Comment on the relevance of the chosen coordinates. Examine the reciprocity of the stiffness matrix.

(Fig.-3)Develop the flexibility matrix for frame ABCD in which AB and BC are 10m with 4I flexural rigidity and CD is 5m with I flexural rigidity with reference to the coordinates as shown in fig. -4

B C

21(Fig.- 4)D

3

A20

20

5 6Section-CAnalyse the continuous beam as shown in fig. -5 by force method in which span AB carrying a uniformly distributed load of 40KN/m, span BC carrying load of 120KN at a distance of 4m from B and span CD carrying load of 20KN/m. Take EI constant throughout.

(Fig.-5)Analyse the pin jointed plane frame as shown in fig-.6 by displacement method the lengths of the members are shown in figure. The numbers in parenthesis are the cross sectional areas of the members in mm2. Take E= 200KN/mm2

(Fig. 6)20

20

78

Section-DAnalysis the Pin jointed plane frame as shown in figure 7. The flexibility for each member is 0.025mm/KN by Force Method?

(Fig.7)

Analysis the Pin jointed plane frame as shown in figure 7. The axial stiffness for each member is 40KN/mm the member (Fig - 6) by Displacement Method?

20

20

4(i)

(ii)

(iii)(iv)

(v)

(vi) (vii)

(viii)

(ix)

(x)

(Short answer type questions - Attempt all sub-parts at one place)

What is the relationship between Flexibility and Stiffness?

What is Conjugate Beam Method.What do you mean by Discritization of structures ?Define Hybrid Structure.Why we need to study the Structural Analysis-III.What is inextensibility ?

Define pin jointed plane frames.Define local coordinates.Define flexibility.What is degree of static indeterminacy?

(2)(2)(2)(2) (2)(2)(2)(2) (2)(2)

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