Light-grade steel channel was used as a purlinof a truss. The top chord of the truss isinclined I V : 4 H and distance betweentrusses is equal to 6 m. The purlin has aweight of 79 N/m and spaced at 1.2 m. oncenters. The dead load including the roofmaterials is 720 Pa, live load of 1000 Pa andwind load of1.21.21440 Pa. Coefficient ofPurlinspressure at leeward and windward are 0.6 and0.2 respectively. Assume all loads passesthrough the centroid of the section.Properties of C 200 x 76 mmSx = 6.19 x 104 mmSy = 1.38 x 104 mm3W = 79 N/m1.2Truss1.212121.2Allowable bending stressFbr = Fby = 207 MPaTruss%3D6mO Calculate the bending stress, fox, for deadload and live load combination (D + L).Calculate the bending stress, foy, for deadload and live load combination (D + L).O Calculate the maximum ratio of actual tothe allowable bending stress for loadcombination 0.75 (D + L + W) at thewindward side.fbx = 151.14 MPafby = 169.6 MPaInteraction = 1.25

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Light-grade steel channel was used as a purlin of a truss. The top chord of the truss is inclined I V: 4 H and distance between trusses is equal to 6 m. The purlin has a weight of 79 N/m and spaced at 1.2 m. on centers. The dead load including the roof materials is 720 Pa, live load of 1000 Pa and wind load of 1.2 1.2 1440 Pa. Coefficient of Purlins pressure at leeward and windward are 0.6 and 0.2 respectively. Assume all loads passes through the centroid of the section. Truss Properties of C 200 x 76 mm 1.2 Sx = 6.19 x 104 mm Sy = 1.38 x 104 mm W = 79 N/m 12 1.2 1.2 TIK Allowable bending stress Fbx = Fby = 207 MPa Truss 6m O Calculate the bending stress, fox, for dead load and live load combination (D + L). O Calculate the bending stress, foy, for dead load and live load combination (D + L). O Calculate the maximum ratio of actual to the allowable bending stress for load combination 0.75 (D + L + W) at the fbx = 151.14 MPa fby = 169.6 MPa Interaction = 1.25 windward side.

Light-grade steel channel was used as a purlin of a truss. The top chord of the truss is inclined I V: 4 H and distance between trusses is equal to 6 m. The purlin has a weight of 79 N/m and spaced at 1.2 m. on centers. The dead load including the roof materials is 720 Pa, live load of 1000 Pa and wind load of 1.2 1.2 1440 Pa. Coefficient of Purlins pressure at leeward and windward are 0.6 and 0.2 respectively. Assume all loads passes through the centroid of the section. Truss Properties of C 200 x 76 mm 1.2 Sx = 6.19 x 104 mm Sy = 1.38 x 104 mm W = 79 N/m 12 1.2 1.2 TIK Allowable bending stress Fbx = Fby = 207 MPa Truss 6m O Calculate the bending stress, fox, for dead load and live load combination (D + L). O Calculate the bending stress, foy, for dead load and live load combination (D + L). O Calculate the maximum ratio of actual to the allowable bending stress for load combination 0.75 (D + L + W) at the fbx = 151.14 MPa fby = 169.6 MPa Interaction = 1.25 windward side.

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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