Test Papers / Previous Question Papers of IGNOU ET502B Structural Analysis December 2005

B.Tech. Civil (Construction Management) / B.Tech. Civil (Water Resources Engineering)
Term-End Examination

December, 2005

ET-502(B): STRUCTURAL ANALYSIS

Time: 3 hours
Maximum Marks: 70

1. Analyse the portal frame as show in Figure 1. The ends A and D are fixed and joints B and C are rigid. Draw tbe bending moment and shear force diagram. Use moment distribution method for the analysis. (14)

FIGURE

2. A pin jointed frame with two diagonals as shown in Figure 2, is assembled. In this frame bar BC is the last member to be fitted and was short by 5 mm. Find forces in all members when the member BC is forced into position. The cross-sectional area of each diagonal is 1500 mm² and the other remaining members have cross-sectional area of 2000 mm². Assume E = 2 x 10² N/mm². (14)

FIGURE

3. Analyse the rigid frame as shown in Figure 3 using the slope deflection method. Draw bending moment and shear force diagram. (14)

FIGURE

4 . Three hinged unsymmetrical arch of 90 m span (figure 4) consists of portion AC and CB. The point'B' is 8 m above the left hand 'A'. The crown C is 40 m from 'A' and 20 m above it. Determine the reactions and draw the bending moment diagram under the given loads at D. (14)

FIGURE

5. Analyse the continuous beam as shown in Figure 5 using Clapeyron's theorem/three moment theorem. Draw bending moment and shear force diagram. (14)

FIGURE

6. A portal frame has plastic moment values as shown in Figure 6. Determine the collapse load and also draw bending moment diagram at collapse. (14)

FIGURE

7. Find the deflection and slope at Point C (Figure 7) of a simply supported beam AB of span I, and loaded with uniformly distributed load of intensity w per unit length throughout the span. (14)

FIGURE

8. (a) State the Maxwell's reciprocal theorem. (3)

(b) Draw the influence line diagrams for beam as shown in Figure 8 for the following components : (11)

(i) The reaction at support C
(ii) The bending moment at point S
(iii) The shear force at point S

FIGURE