Determine the bending stress along the x-axis of the W section. Determine the bending stress along the y-axis of the W section. Determine the ratio of the actual to the allowable bending stress using intersection equation.
Determine the bending stress along the x-axis of the W section. Determine the bending stress along the y-axis of the W section. Determine the ratio of the actual to the allowable bending stress using intersection equation.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Problem #2
A W 6 x 16 section is to serve as a purlin between roof trusses 7.2 m. on
centers. The roof is assumed to support a dead load of 960 N/m² of
roof surface including its own weight and a live load of 1000 N/m² of
horizontal roof surface projection. The slope of the roof truss is 1 vertical
to 2 horizontal and the purlins are to be spaced 1.8 m. on centers. Use
A 36 steel with Fy = 248 MPa. Assume all loads pass through the center
of gravity of the section. Sag rods are to be placed at the middle thirds
between trusses.
Properties of W 6 x 16
A = 3058 mm²
Sx 167 x 103 mm³
=
d = 159.51 mm
Sy = 36 x 103 mm³
bf = 102.36 mm
tw = 6.60 mm
t₁ = 10.29 mm
Determine the bending stress along the x-axis of the W section.
Determine the bending stress along the y-axis of the W section.
3 Determine the ratio of the actual to the allowable bending stress
using intersection equation.
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