A light-gage cold-formed steel channel used as purlins are simply supported on the roof truss 4m apart. Sagrods are placed at midspan. Assuming compact section and loads acting on the flange. Use ASD method. Theroof continuously braces the purlin.Given:• Purlin spacing - 1.5mSlope - 15 degrees• Dead Load - 2.5kPa• Live Load - 2.5kPa• Wind Load - 1.0kPa• Windward coefficient - 0.25Properties of channel section:•S, - 185.17x10° mmS, - 16.55x10 mm• 2, - 223x10 mmz, - 33.4x10 mm• f- 21mmy- 16.79mm• C- 1.30Determine allowable flexure strength about the y-axis (kNm).

Answered: Image /qna-images/answer/198aa4b5-1be0-4313-928a-59da7e28ba7e.jpg

Answered: urlin spacing 1.5m lope 15 degrees read…

urlin spacing 1.5m lope 15 degrees read Load- 2.5kPa ve Load- 2.5kPa Wind Load 1.0Pa Vindward coefficient - 0.25 erties of channel section: 185.17x10 mm -16.55x10 mm

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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Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

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
• 2, - 223x10 mm
z, - 33.4x10 mm
• f- 21mm
y- 16.79mm
• C- 1.30
Determine allowable flexure strength about the y-axis (kNm).

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