3. Select a W6 purlin for a roof system whose trusses are 5m on center and sag rods are used at the third points between trusses. The span of the truss is 15m, purlin spacing is 1.4m, and the height of truss is 3.6m. Full lateral support is supplied by the roof above. Use Fy = 350MPa and LRFD method. The following loads are in terms of kilonewtons per square meter of roof surface. Roofing = 0.30kPa Wind pressure = 0.75kPa Roof live load = 0.60kPa.

3. Select a W6 purlin for a roof system whose trusses are 5m on center and sag rods are used at the third points between trusses. The span of the truss is 15m, purlin spacing is 1.4m, and the height of truss is 3.6m. Full lateral support is supplied by the roof above. Use Fy = 350MPa and LRFD method. The following loads are in terms of kilonewtons per square meter of roof surface. Roofing = 0.30kPa Wind pressure = 0.75kPa Roof live load = 0.60kPa.

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter5: Beams

Section: Chapter Questions

Problem 5.11.9P

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Question

Subject:Civil Engineering (Steel Design)

3. Select a W6 purlin for a roof system whose trusses are 5m on center and sag rods
are used at the third points between trusses. The span of the truss is 15m, purlin
spacing is 1.4m, and the height of truss is 3.6m. Full lateral support is supplied by the
roof above. Use Fy = 350MPa and LRFD method. The following loads are in terms of
kilonewtons per square meter of roof surface.
Roofing = 0.30kPa
Wind pressure = 0.75kPa
Roof live load = 0.60kPa.

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