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GATE 2020 Steel Structures Quiz 3

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Question 1

A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 – 2007) values, respectively, of effective length factor of the column are

Question 2

For connecting lacing flat to column section with M20 bolts, the minimum width of flat (in mm) should be

Question 3

A column is provided using ISHB 350@ 661.2 N/m. If the effective length of column is 3 m, the design compressive stress (in N/mm²) is ____ N/mm².
[Relevant section properties:

N/mm². Symbols have their usual meanings]

Question 4

A compound column has beam fabricated with 4 angles of ISA 50*50*6 mm placed at corners of a square 400 mm X 400 mm. The radius of gyration of the angle is 12 mm for fabricated column. The overall slenderness ratio is 50. The maximum spacing of lacing bar (in mm) attachments of fabricated column is

Question 5

Four angles of ISA 100X100X10 are used for a used for a built up column. The column is subjected to a compressive force of 1800 kN. If a flat of 80*10 mm size is used as lacing bar for the single lacing system and inclination of the lacing bar is 45⁰ with vertical, then each lacing bar is designed for an axial force of

Question 6

A steel column of ISHB 350 @ 72.4 kg/m is subjected to a factored axial compressive load of 2000 kN. The load is transferred to a concrete pedestal of grade M20 through a square base plate. Consider bearing of concrete as 0.45

where

is the characteristic strength of concrete. Using limit state method and neglecting the self weight of base plate and steel column, the length of a side of the base plate to be provided is

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ESE & GATE CE Design of Steel Structures

Nov 10ESE & GATE CE