A W 6 x 9 is used as a purlin for a roof truss. The top chord of the truss is inclined at 26.6° from the horizontal. Distance between trusses is 5.6 m and sag rods are used at the midpoints between trusses. Full lateral support is assumed to be supplied from the roof above. Given: Live load = 1440 Pa Dead load including weight of purlins and roof materials = 430 Pa Spacing of purlins = 1.4 m Assume all loads is acting at the top of the purlins Properties of W6x9 d = 149.86 mm b₁ = 100.08 mm t₁ = 5.46 mm Zx = 102 (10³) mm³ Sy = 18 (10³) mm³ Z₁ = 28 (103) mm³ Fy = 345 MPa Sx = 91 (103) mm³ Compute the factored load moment about the y-axis. y= 23mm

A W 6 x 9 is used as a purlin for a roof truss. The top chord of the truss is inclined at 26.6° from the horizontal. Distance between trusses is 5.6 m and sag rods are used at the midpoints between trusses. Full lateral support is assumed to be supplied from the roof above. Given: Live load = 1440 Pa Dead load including weight of purlins and roof materials = 430 Pa Spacing of purlins = 1.4 m Assume all loads is acting at the top of the purlins Properties of W6x9 d = 149.86 mm b₁ = 100.08 mm t₁ = 5.46 mm Zx = 102 (10³) mm³ Sy = 18 (10³) mm³ Z₁ = 28 (103) mm³ Fy = 345 MPa Sx = 91 (103) mm³ Compute the factored load moment about the y-axis. y= 23mm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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