1. Choose the most appropriate answer from the following alternatives in each case
Nominal diameter of a rivet is 16 mm. Gross diameter of the rivet is 18mm

(ii) 16mm

(iii) 17·5 mm

(iv) 17mm Shear force in rolled steel beams is resisted by top flange only

(ii) flanges only

(iii) web only

(iv) both the flange and web Net cross-sectional area of a rivet jointed tension member is Area of the member divided by the area of the rivet holes

(ii) Area of the member minus twice the area of the rivet holes

(iii) Area of the member minus the area of the rivet holes

(iv) Area at the mid section The slenderness ratio of a compression member carrying compressive loads resulting from dead and superimposed loads only should be less than 350

(ii) 250

(iii) 180

(iv) 400 The size of the butt weld is denoted by its effective throat thickness, but in case of incomplete penetration, the effective throat thickness is taken as
Half the thickness of the thicker part connected
Five-eighth thickness of the thinner part connected

(iii) Half the thickness of the thinner part connected
None of the above
Maximum permissible eccentricity of load for no tension at the base of a masonry wall having a base width is
B/3
B/6

(iii) B/4
B/2 The ratio of depth of purlin to its span should be more than
1/60
1/45

(iii) 1/50
None of the above

2. Calculate the fixed end moments and the support reactions for the fixed beam shown in Figure 1. Also draw B.M. and S.F. diagrams. <img src='./qimages/10601-2.jpg'>

3. Design a simply supported I-section beam carrying a UDL of 35 kN/m. Effective span of the beam is 6 m and the compression flange may be assumed to be laterally supported throughout its length. Assume fy =250 N/mm^2 .

4.(a) Discuss the steps to design a purlin of a roof truss.
Discuss the steps to design a built-up column.
Define Lug Angle. Discuss its utility.

5. A portal frame is loaded as shown in Figure 2. Analyze the frame assuming the moment of inertia as shown in within circles. Draw B.M. and S.F.diagrams also.
<img src='./qimages/10601-5.jpg'>

6. A masonry retaining wall of 6 m height is 1·5 m wide at top and 4.5 m wide at base. The water face of the wall is vertical. Calculate the maximum and minimum stresses at the base. Assume the weight of masonry as 22 kN/m^3 and free board as 500 mm.

7. Write short notes on any four of the following:
Web buckling of I-section Grillage Base
Euler's formula for critical load Stiffness of a beam and distribution factor in Moment Distribution Method
Advantages of welding joint
Lacing in compound columns
Assumptions for the design of riveted joints

8.(a) A tension member consists of two IS angles of 150 x 75 x 10 mm. These angles are connected by their long legs to a 12 mm gusset plate by 16 mm diameter rivets (single row). Calculate the net effective
area of the angles, if the angles are connected on the same side of the gusset plate and tack-riveted properly. Calculate the design load of a discontinuous strut of 1·9 m effective length as shown in Figure 3. It consists of two equal angles ISA 50 x 50 x 6 mm and is connected to the same side of gusset plate by two rivets on each angle at both ends. Assume yield stress of 250 N/mm^2.
<img src='./qimages/10601-8b1.jpg'>

Allowable stress in axial compression for Fy =250 N/mm^2.
<img src='./qimages/10601-8b2.jpg'>