Design a gantry girder for the following data Longitudinal spacing of gantry columns= 8m. C/C distance between the gantry girders = 14m Width of wheel base = 3m Clear edge distance for the hook of the crane = 1m Crane (EOT) capacity = 160KN Wt of crane girder = 80 KN Self Wt of crab = 30KN (Note: check for lateral and longitudinal loads need not be done) Draw the plan and C/S of the gantry girder for the above problem. Draw the line diagram of the layout of the ganty system (including columns, girders, trolley) if the length of the building is 32m.
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PART-A
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Note:- 1. Answer One question from PART-A and any Three questions from PART-B. 2. Use of IS 800 and IS 875 is permitted 3. Any missing data may be suitably assumed
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Design the cross section and the lacing system of a built up column for a capacity of 1600KN. The effective length of the column=4.2m. Adopt 4 angles box section. Draw the plan and the side view of the above problem to a suitable scale. Draw the typical joint of a truss. PART-B
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3.a) Explain the various types of failures in a rivetted joint. b) The flange of T section is connected to the flange of a column section ISMB 300 (with the flange of the T section vertical). A vertical load of 450KN is acting on the web of T section at 150mm from the junction of the flanges. Design the rivetted connection. (contd…2)
Code No.310107
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Write the design principles of eccentrically loaded columns. Design a double angle tie to carry a load of 450KN (both angles on same side of gusset plate) i) When sufficient tacking rivets are provided ii) When tacking rivets are not provided
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Explain briefly the necessity of intermediate stiffeners A plate girder carrying a total load of 45 KN/m is 18m long. The C/S of the girder at mid span is as follows. Web plate – 6 x 2000mm; flange angles 2IS A 150 x 150 x 15 on both sides, 3 cover plates 400 x 8mm on both sides (top and bottom) Design the intermediate stiffeners and their connection to the web of the girder.
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Calculate the design forces in the members of a roof truss whose span is 12m. C/C spacing of the trusses is 4m. The building is located in the urban locality of Hyderabad. The length of the building is 25m. Assume K1=1.0, K3=1.0 and medium permeability for the walls. Access is not provided to the truss except for maintenance. Height of truss above ground level = 4.5m.
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6.a) What are the secondary design considerations in beams. b) A beam of 6m span (effective) has to carry a superimposed load of 40KN/m. ISMB 300 sections are available. Design a compound beam if the compression flange is restrained. Design the connection between the plates and I section and find the theoretical curtailment lengths of the plates.
(I Semester) Examination, Nov. 2002. STRUCTURAL ENGINEERING
C/C distance between the gantry girders = 14m · Width of wheel base = 3m · Clear edge distance for the hook of the crane = 1m · Crane (EOT) capacity = 160KN.
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