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G192009 Pages:3

concrete. The load is transferred to the base plate by welded connection.

What is lateral torsional buckling of beams?

Design the simply supported main beam of a building supporting concrete floor slab with
the following data:

Centre to centre distance of beams — 6m

Span of beam - 0

Thickness of concrete slab — 240mm

Finished screed — 40mm thick

Weight of concrete slab and finished screed- 24kN/m*

Imposed load — 4kN/m?

PART C

Answer any two full questions, each carries 20 marks.
Design a purlin on a sloping roof truss with the dead load of 0.15 kN/m’, a live load of 2.5
kN/m? and a wind load of 0.6 kN/m? (suction) . The purlins are 1.8m centre to centre and
a span of 3.8m, simply supported on a rafter at a slope of 20°.
A roof truss has a span of 20m and a rise of 4m is placed at 3.5m c/c. calculate the live
load on the roof truss.
The details of a shed situated in Thiruvananthapuram is given below
Span of truss — 15m
Rise of truss - 4m
Eaves height - 8m
Spacing of truss - 3m
Spacing of purlin— 4m
Find the design wind pressure and wind load on purlin.
Design the bracket connection shown below. The connection supports a load of 15010,
The column section is ISHB 150@ 300.19N/m. The thickness of bracket plate is 10mm.
Use M16 bolts of grade 4.6.

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