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b)

G1009 Pages: 3

2m ‏.ا‎ The pitch of truss is 28° and span of truss is 18m. The roof consists of
asbestos sheets with 150 N/m?.Design a suitable I section purlin

Design a beam of clear span 3m at spacing of 1.5m in a roof. The bearing at each
end is 30cm. The dead load of roof covering is 2kKN/m? and live load is 2.5
kN/m?. Assume that teak wood is used.

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

treatability.

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