A light-gage cold-formed steel channel used as purlins are simply supported on theroof truss 4m apart. Sag rods are placed at midspan. Assuming compact section andloads acting on the flange. Use ASD method. The roof continuously braces the purlin.Given:• Purlin spacing 1.5mSlope 15 degreesDead Load - 2.5kPaLive Load - 2.5kPaWind Load - 1.0kPa. Windward coefficient 0.25Properties of channel section:S, - 185.17x10 mmS, - 16.55x10 mmZ.- 223x10 mmZ, - 33.4x10 mmTes 21mmry- 16.79mmC-1.30Determine allowable flexure strength about the y-axis (kNm).

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gage cold-formed steel channel used as pur uss 4m apart. Sag rods are placed at midspar acting on the flange. Use ASD method. The r urlin spacing 1.5m ope 15 degrees

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

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter3: Tension Members

Section: Chapter Questions

Problem 3.8.3P

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Question

A light-gage cold-formed steel channel used as purlins are simply supported on the
roof truss 4m apart. Sag rods are placed at midspan. Assuming compact section and
loads acting on the flange. Use ASD method. The roof continuously braces the purlin.
Given:
• Purlin spacing 1.5m
Slope 15 degrees
Dead Load - 2.5kPa
Live Load - 2.5kPa
Wind Load - 1.0kPa
. Windward coefficient 0.25
Properties of channel section:
S, - 185.17x10 mm
S, - 16.55x10 mm
Z.- 223x10 mm
Z, - 33.4x10 mm
Tes 21mm
ry- 16.79mm
C-1.30
Determine allowable flexure strength about the y-axis (kNm).

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