!!! READ BEFORE ANSWERING !!!

SOLVE USING NSCP 2015

ANSWER SHOULD BE ON THE CHOICES. JUST DON'T ANSWER RANDOM ANSWER. I ALWAYS RECOMPUTE THE ANSWER HERE

DON'T COPY AND PASTE ANYONE'S HARD WORK.

POSTED IT HERE MULTIPLE TIMES. AND ALWAYS GETTING THE SAME ANSWER WITH SAME PICTURE

Light - grade steel channel was used as a purlin of a truss. The top chord of the truss is inclined 1V:4H 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 deadload including the roof materials is 720 Pa, live load of 1000 Pa and wind load of 1440 Pa. Coefficient of pressure at leeward and windward are 0.6 and 0.2 respectively. Assume all loads passes through the centroid of the section. Take Fy = 350MPa. Properties of channel: Zx = 7.70 x 104 mm 2y = 2.10 x 104 mm Sx = 4.48 x 104 mm Sy = 1.18 x 104 mm Calculate the maximum ratio of actual to the allowable bending stress for load combination 1.2D+1.0L+1.0W at the leeward side. 1.2m Truss 1.2m 1.2m 1.2m 1.2m 1.2m [[ 1 4 4 A 0.472 B B 0.237 0.126 D 0.658 Light - grade steel channel was used as a purlin of a truss. The top chord of the truss is inclined 1V:4H 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 deadload including the roof materials is 720 Pa, live load of 1000 Pa and wind load of 1440 Pa. Coefficient of pressure at leeward and windward are 0.6 and 0.2 respectively. Assume all loads passes through the centroid of the section. Take Fy = 350MPa. Properties of channel: Zx = 7.70 x 104 mm 2y = 2.10 x 104 mm Sx = 4.48 x 104 mm Sy = 1.18 x 104 mm Calculate the maximum ratio of actual to the allowable bending stress for load combination 1.2D+1.0L+1.0W at the leeward side. 1.2m Truss 1.2m 1.2m 1.2m 1.2m 1.2m [[ 1 4 4 A 0.472 B B 0.237 0.126 D 0.658