Light-grade channel is used as a purlin of a truss whose top chord is sloped at 15degrees from the horizontal. Properties of channel section: Sx = 6.19 x 10^4 mm^3 Sy = 1.38 x 10^4 mm^3 Simple Span = 6 m with one sagrod at L/2 Loads Roof Loads (applied at centroid of purlins) Dead Load = 0.95 kPa (including weight of purlin) Live Load = 1.2 kPa Allowable Stress: Fbx = Fby =110 MPa a. Determine the maximum spacing of purlins (m) due to dead load plus live load only. (
Light-grade channel is used as a purlin of a truss whose top chord is sloped at 15degrees from the horizontal. Properties of channel section: Sx = 6.19 x 10^4 mm^3 Sy = 1.38 x 10^4 mm^3 Simple Span = 6 m with one sagrod at L/2 Loads Roof Loads (applied at centroid of purlins) Dead Load = 0.95 kPa (including weight of purlin) Live Load = 1.2 kPa Allowable Stress: Fbx = Fby =110 MPa a. Determine the maximum spacing of purlins (m) due to dead load plus live load only. (
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Light-grade channel is used as a purlin of a truss whose top chord is sloped at 15degrees from the horizontal.
Properties of channel section:
Sx = 6.19 x 10^4 mm^3
Sy = 1.38 x 10^4 mm^3
Simple Span = 6 m with one sagrod at L/2
Loads
Roof Loads (applied at centroid of purlins)
Dead Load = 0.95 kPa (including weight of purlin)
Live Load = 1.2 kPa
Allowable Stress:
Fbx = Fby =110 MPa
a. Determine the maximum spacing of purlins (m) due to dead load plus live load only. (Hint: Analyze in terms of s and DCR<= 1.0 )
please i need answer thank you
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