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00000CE401121904

PART B
Answer any two full questions, each carries 15 marks.
Explain the classification of cross sections as per the IS 800: 2007 based on yield

and plastic moments & rotational capacities.

Determine the design compressive load capacity of a column made of a rolled
steel section ISMC200@217N/m if length of the column is 3m, with both ends
fixed.

Differentiate between web buckling & web crippling.

An [email protected]/m has been used as a simply supported beam over a span
of 7.2m. Determine the safe uniform load that the beam can carry in flexure if

the compression flange of the beam is restrained against lateral buckling.

Design a built up column with two channels placed back-to-back and separated
apart. The column is of 6m effective length and supports a factored load of
15001. Also design the bolted lacing system.

PART C
Answer any two full questions, each carries 20 marks.
Explain various loads and load combinations to be considered in the design of a

roof truss.

Design an I section purlin for an industrial building, located at Chennai, with
Galvanised iron sheets as the roofing material.

Span of the truss =13m

Spacing of trusses = 6m 0/0

Spacing of purlins = 1.2m 0/0

Wind pressure intensity = 2 kKN/m?

Weight of GI sheets =130N/m”

Grade of steel : Fe 410

Classify the timber based on grades, modulus of elasticity, durability, location
and treatability.

Design a bolted bracket connection (in plane) to support an end reaction of
500kN due to the factored loads supported by the beam, as shown in figure
below. The eccentricity of the end reaction is 200 mm. The steel used is of grade
Fe410 and bolts are of 20mm diameter, grade 4.6. The thickness of bracket plate
may be taken as 10 mm. The column section is ISHB200 @366N/m.

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