STUPIDSID
Answer any one question from Q1 and Q2
1 (a)
Draw stress distribution diagram for plastic, compact, semi compact and slender section. Also classify ISHB 400 @ 77.4 kg/m and ISMC 400 @ 49.4 kg/m.
6 M
1 (b)
Determine the design strength of a column section ISLB 500 @ 75 kg/m with the effective length of the column as 5 m. Assume buckling axis as z-z axis and yield stress of steel fy = 250 MPa.
4 M
2 (a)
A tension member of roof truss consists of 2 ISA 90×90×10 mm @ 13.4 kg/m connect to 10 mm thick gusset plate by fillet weld. Design welded connection assuming 5 mm weld size and draw the design sketch.
6 M
2 (b)
Differentiate lacing and battening in a built up column section on the basis of general and design consideration.
4 M
Answer any one question from Q3 and Q4
3 (a)
A strut of truss consist of 2-ISA 80×80×8 mm @ 9.6 kg/m placed back to back on opposite side of gusset plate is to carry factored load of 275 kN. Design the bolted connection and draw design sketch.
4 M
3 (b)
Design a slab base for the column consisting of ISMB 400@ 61.6 kg/m carrying an axial factored load of 450 kN. Use M20 grade of concrete.
6 M
4 (a)
A built up column of length 10 m carries a factored load of 1100 kN. The column is restrained in position but not in direction at both ends. Design a column section using two channels section.
4 M
4 (b)
A column section ISLB 350 @ 82.2 kg/m having effective length of 3.5 m is subjected to factored axial load of 450 kN and factored moment of 50 kNm. Check adequacy for section strength only.
6 M
Answer any one question from Q5 and Q6
5 (a)
A simply supported beam of effective span 6 m carries a uniformly distributed load of w kN/m throughout the span. The compression flange is laterally supported throughout the span. Determine the intensity of uniformly distributed load w so that the section ISMB 500 @ 86.9 kg/m provided for beam can carry safely. Check the case of high or low shear.
10 M
5 (b)
Explain web buckling and crippling with suitable sketches. Also state the design check for web buckling and crippling.
6 M
6
Design a suitable I-section for a simply supported beam of span 5 m. The beam is subjected to dead load of 25 kN/m and live load of 35 kN/m. The compression of beam is laterally unsupported throughout the span. Check for serviceability.
16 M
Answer any one question from Q7 and Q8
7 (a)
Show the arrangement of secondary and primary floor beam in the plan of building.
4 M
7 (b)
Design a seat connection for a factored beam end reaction of 110 kN. The beam section is ISMB 250 @ 37.3 kg/m connected to the flange of column section ISHB 200 @ 37.3 kg/m using bolted connection.
12 M
8
A simply supported welded plate girder of span 24 m is subjected to uniformly distributed load 30 kN/m on whole span excluding self weight of plate girder. Design cross section of plate girder and check for shear buckling of web and shear capacity of end panels. Assume compression flange is laterally supported throughout the span and the yield stress of steel is fy = 250 Mpa.
16 M
Answer any one question from Q9 and Q10
9
Determine the design force in the members Lo2U1, L0L1 and U1L1 of a pratt truss as shown in Fig. 9. The design wind pressure is 1200 N/m2, the trusses are covered with A C sheet and the centre to centre spacing of truss is 6 m.
18 M
10 (a)
Determine the maximum wheel load, shear force and bending moment for the granty girder as per following data:
Crane capacity: 200 kN
Self weight of crane girder: 200 kN
Self weight of trolley, motor hook etc: 40 kN
Min approach of hook: 1.2m
Wheel base: 3.5m
Span o crane girder: 16 m
Span of granty girder: 8m
Self weight of rail section: 300 N/m
Diameter of crane wheels: 150 mm
Crane operates: 225 days
Working hours: 9am to 5 pm
Maximum number of trip per hour: 03
Design life: 50 years
Grade of steel: fe 410.
Crane capacity: 200 kN
Self weight of crane girder: 200 kN
Self weight of trolley, motor hook etc: 40 kN
Min approach of hook: 1.2m
Wheel base: 3.5m
Span o crane girder: 16 m
Span of granty girder: 8m
Self weight of rail section: 300 N/m
Diameter of crane wheels: 150 mm
Crane operates: 225 days
Working hours: 9am to 5 pm
Maximum number of trip per hour: 03
Design life: 50 years
Grade of steel: fe 410.
10 M
10 (b)
Check for fatigue strength of section of gantry girder as per data given in Q.10 a. A girder is subjected to factor moment and factor shear force of 680 kNm and 380 kN respectively. The elastic section modulus is 3765?03 mm3 and the c/s sectional area is 4560 mm2.
8 M
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