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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER- VI • EXAMINATION SUMMER-2017
Subject Code: X60604 Date: 04/05/2017
Subject Name: Structural Design I
Time: 10.30AM to 01:00PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of IS 800:2007, IS 875 Part II, II, SP-6 and Steel Table are permitted.
5. Consider fy 250 N/mm2 and fu 410 N/mm2 for steel, if not mentioned.
Q.1

Enlist various limit states as per Indian Standard. Explain any one in detail.
07

Explain different types of load to be considered for the design of steel structure.
07
Q.2

Design seat angle connection between the beam ISMB 250 37.3kg/m and column ISHB 250 51kg/m. The beam reaction is 100kN due to factored load. Use M16 bolts of 4.6 grade and steel Fe 410.
07

An ISLB 300 37.7kg/m transmits an end reaction of 300kN (due to factored load); to the web of ISMB 450 72.4kg/m. Design a suitable web cleat connection.
07
OR

Give advantages and disadvantages of steel structures.
07
Q.3

Considering non-sway column in a building frame with flexible joints of 6.0m height and subjected to the factored axial load 1000kN at an eccentricity of 50mm. Design a suitable column, if the column is hinged at both ends.
14
OR
Q.3

Select suitable section of the simply supported gantry girder and show the check for buckling resistance for the following data:
Span of gantry girder 6m, Span of crane girder 12m, Crane capacity 150kN, Self-weight of crane girder excluding trolley 100kN, Self-weight of trolley 50kN, Minimum hook approach 1m, Distance between wheels 3m, Self-weight of rails 0.25 kN/m.
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Q.4

Select suitable configuration of the truss and determine panel point load due to dead load, live load and wind load; using following data:
Location Ahmedabad, Span of truss 20m, spacing of truss 5m rise of truss 3m, height of eaves 10m.
Also, design any one member of the truss.
14
OR
Q.4

Design web and flange of simply supported plate girder of 20m span subjected to factored uniformly distributed load of 50kN/m throughout. In this plate girder transverse stiffener should be avoided. Use simple post critical method for checking of shear buckling of web. Assume 0.3, E 2 x 105 N/mm2.
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Q.5

A portal frame consists of two hinge supported column of 5m height separated by a beam of span 7m and loaded up to collapse with downward uniformly distributed load of 20kN/m. Find the plastic moment of resistance if it is of uniform strength.
14
OR
2
Q.5

Design the foot bridge for N type lattice girder having 10 Nos. of panels and laterally supported by rakers. The span of bridge is 20 m and width of walk way is 3.0 m. The RCC flooring slab of 110mm thick subjected to floor finish load and live load of 1.0kN/m2 and 3.0kN/m2 respectively.
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