Homework Help is Here – Start Your Trial Now!
Engineering
Civil Engineering
What is value of L or length to get the results of 8.68kn.m and 0.753 kn.m in the green box   Topic: BIAXIAL BENDING- STEEL DESIGN

What is value of L or length to get the results of 8.68kn.m and 0.753 kn.m in the green box   Topic: BIAXIAL BENDING- STEEL DESIGN

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

What is value of L or length to get the results of 8.68kn.m and 0.753 kn.m in the green box

 

Topic: BIAXIAL BENDING- STEEL DESIGN

 

Section W6x8.5 W6x12 W4x13 For ASD. Max M₁ = ax M. ay + Μ/ΩΜ/Ω = Weight Area (N/m) (mm²) 124.3 175.5 wL² 8 W, [² 32 nx Ω 190.1 M M ax M Ma Depth (mm) 1619.35 148.082 100.076 2283.97 152.400 2464.54 105.664 -= 8.68kN-m M ay + = 0.753kN-m ny ≤1.0 Ω bf (mm) ≤1.0 101.600 103.124 tf (mm) 4.928 7.087 8.763 tw (mm) Sx (mm³) 4.318 5.482 + 7.112 83246 8.68 0.753 30.277 6.35 1.67 1.67 118806 89309 Sy (mm³) 16551 24417 30316 Mpy = Fy(Zy) = 248×25.6(10³) = 6.35kN • m Zx (mm³) No LTB:M₁ = M₂ Mpx = Fy(Zx)=248×93.9(10³) = 23.29kN.m For Cb: Cb = 1.30 M=1.30(23.29) = 30.277kN-m = 0.677 <1.0 93900 136000 103000 Zy (mm³) 25600 38000 479000 W = 3282.28 N/m X = W, 1138.87 N/m = check if section is compact b₁ 100.026 2t, 2(4.928) -=10.15 E Fy .. section is compact .. section is adequate Use W6x8.5 <0.38 Check the upper limit: Z₁ = 1.55<1.6 :. M = M = 6.35kN m ny Py S = 10.79
Transcribed Image Text:Section W6x8.5 W6x12 W4x13 For ASD. Max M₁ = ax M. ay + Μ/ΩΜ/Ω = Weight Area (N/m) (mm²) 124.3 175.5 wL² 8 W, [² 32 nx Ω 190.1 M M ax M Ma Depth (mm) 1619.35 148.082 100.076 2283.97 152.400 2464.54 105.664 -= 8.68kN-m M ay + = 0.753kN-m ny ≤1.0 Ω bf (mm) ≤1.0 101.600 103.124 tf (mm) 4.928 7.087 8.763 tw (mm) Sx (mm³) 4.318 5.482 + 7.112 83246 8.68 0.753 30.277 6.35 1.67 1.67 118806 89309 Sy (mm³) 16551 24417 30316 Mpy = Fy(Zy) = 248×25.6(10³) = 6.35kN • m Zx (mm³) No LTB:M₁ = M₂ Mpx = Fy(Zx)=248×93.9(10³) = 23.29kN.m For Cb: Cb = 1.30 M=1.30(23.29) = 30.277kN-m = 0.677 <1.0 93900 136000 103000 Zy (mm³) 25600 38000 479000 W = 3282.28 N/m X = W, 1138.87 N/m = check if section is compact b₁ 100.026 2t, 2(4.928) -=10.15 E Fy .. section is compact .. section is adequate Use W6x8.5 <0.38 Check the upper limit: Z₁ = 1.55<1.6 :. M = M = 6.35kN m ny Py S = 10.79
Select a W section to serve as purlins between roof trusses spaced at 4.6 m on centers. Assume all loads passes through the Centroid of the purlins. Spacing of purlins is 1.4 m on centers. Assume that the purlins are fully laterally supported and subject to the following: Loads Slope of the roof truss is 1 vertical to 2 horizontal. Sag rods are provided at the midpoints of the truss. A36 steel, Fy=248 MPa Select from any W section listed in the table below. Use ASD Section W6x8.5 W6x12 Snow = 1440 N/m2 of roof surface Roofing = 288 N/m2 of roof surface Wind surface = 720 N/m2 perpendicular to roof surface W4x13 Weight (N/m) 124.3 175.5 190.1 Area (mm²) 1619.35 2283.97 2464.54 Depth (mm) 148.082 152.400 105.664 bf (mm) 100.076 101.600 103.124 tf (mm) tw (mm) 4.928 7.087 8.763 4.318 5.482 7.112 Sx (mm³) 83246 118806 89309 Sy (mm³) Zx (mm³) 16551 24417 30316 93900 136000 103000 Zy (mm³) 25600 38000 479000
Transcribed Image Text:Select a W section to serve as purlins between roof trusses spaced at 4.6 m on centers. Assume all loads passes through the Centroid of the purlins. Spacing of purlins is 1.4 m on centers. Assume that the purlins are fully laterally supported and subject to the following: Loads Slope of the roof truss is 1 vertical to 2 horizontal. Sag rods are provided at the midpoints of the truss. A36 steel, Fy=248 MPa Select from any W section listed in the table below. Use ASD Section W6x8.5 W6x12 Snow = 1440 N/m2 of roof surface Roofing = 288 N/m2 of roof surface Wind surface = 720 N/m2 perpendicular to roof surface W4x13 Weight (N/m) 124.3 175.5 190.1 Area (mm²) 1619.35 2283.97 2464.54 Depth (mm) 148.082 152.400 105.664 bf (mm) 100.076 101.600 103.124 tf (mm) tw (mm) 4.928 7.087 8.763 4.318 5.482 7.112 Sx (mm³) 83246 118806 89309 Sy (mm³) Zx (mm³) 16551 24417 30316 93900 136000 103000 Zy (mm³) 25600 38000 479000
Expert Solution
steps

Step by step

Solved in 3 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Types and properties of steel
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Structural Analysis
Structural Analysis
Civil Engineering
ISBN:
9781337630931
Author:
KASSIMALI, Aslam.
Publisher:
Cengage,
Structural Analysis (10th Edition)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Sustainable Energy
Sustainable Energy
Civil Engineering
ISBN:
9781337551663
Author:
DUNLAP, Richard A.
Publisher:
Cengage,
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS