Channel sections are used as a purlin. The top chords of the truss are sloped at 6H to 1V. Trusses are spaced 4m on centers. Use the properties of the channel section in the picture. Loads: Dead load = 600 Pa Live load = 800 Pa Wind load = 1,300Pa Wind coefficients: Windward = 0.25 Leeward = -0.4 Use Fbx=Fby=248 MPa. Determine the safe spacing of purlins (Use load combination of 0.75(D+L+W)
Channel sections are used as a purlin. The top chords of the truss are sloped at 6H to 1V. Trusses are spaced 4m on centers. Use the properties of the channel section in the picture. Loads: Dead load = 600 Pa Live load = 800 Pa Wind load = 1,300Pa Wind coefficients: Windward = 0.25 Leeward = -0.4 Use Fbx=Fby=248 MPa. Determine the safe spacing of purlins (Use load combination of 0.75(D+L+W)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Channel sections are used as a purlin. The top chords of the truss are sloped at 6H to 1V. Trusses are spaced 4m on centers. Use the properties of the channel section in the picture.
Loads:
Dead load = 600 Pa
Live load = 800 Pa
Wind load = 1,300Pa
Wind coefficients:
Windward = 0.25
Leeward = -0.4
Use Fbx=Fby=248 MPa. Determine the safe spacing of purlins (Use load combination of 0.75(D+L+W)
![Flange
Web
thickness
Mass
Area
Depth
Width
Thickness
(kz/m)
(mm³)
(mm)
(mm)
(mm)
(mm)
15.6
1990
152
51.6
8.71
7.98
Axis X-X
Axis Y-Y
S = 1jc
(10 mm) (10 mm')
S = IJc
(10* mm) (10' mm²)
(mm)
(mm)
(mm)
6.29
82.6
56.4
0.358
9.19
13.4
12.7](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F775cedf0-0582-41d7-ada2-259cf43429db%2Fbe1c52bd-8205-4d86-99b4-85ae05194e7e%2Fpex008m_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Flange
Web
thickness
Mass
Area
Depth
Width
Thickness
(kz/m)
(mm³)
(mm)
(mm)
(mm)
(mm)
15.6
1990
152
51.6
8.71
7.98
Axis X-X
Axis Y-Y
S = 1jc
(10 mm) (10 mm')
S = IJc
(10* mm) (10' mm²)
(mm)
(mm)
(mm)
6.29
82.6
56.4
0.358
9.19
13.4
12.7
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