Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN: 9781337094740
Author: Segui, William T.
Publisher: Cengage Learning
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Question
Chapter 9, Problem 9.8.4P
To determine
(a)
The design of a non-composite beam and the total deflection.
To determine
(b)
Maximum total deflection using the transformed section and lower bound moment of inertia.
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A 50 mm x 100 mm purlin is used for a roof truss.
Spacing of trusses is 3.5 m
Weight of roofing sheets is 120 Pa
Roof live load is 750 N/m² of roof area and ceiling load is 140 N/m² of roof area
Spacing of purlins is 450 mm on centers.
Inclination of the top chord is 30° from the horizontal
The timber is 80% stress grade yakal.
From table, E(yakal)=9780 MPa.
Neglect the weight of purlins.
1. Which of the following most nearly gives the total vertical load, in N/m?
a. 455
b. 193
c. 270
d. 338
2. Which of the following most nearly gives the maximum bending stress, in MPa?
a. 15.6
b. 5
c. 12.5
d. 33.5
3. Which of the following most nearly gives the maximum deflection, in mm?
a. 33.5
b. 16.3
c. 47.5
d. 24.8
A rigid bar is attached to two vertical rods before a load is applied. Compute the vertical movement under P= 50kN
*DRAW THE FBD; COMPLETE SOLUTION
*USE 3 DEC PLACES
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)
Chapter 9 Solutions
Steel Design (Activate Learning with these NEW titles from Engineering!)
Ch. 9 - Prob. 9.1.1PCh. 9 - Prob. 9.1.2PCh. 9 - Prob. 9.1.3PCh. 9 - Prob. 9.1.4PCh. 9 - Prob. 9.1.5PCh. 9 - Prob. 9.1.6PCh. 9 - A W1422 acts compositely with a 4-inch-thick floor...Ch. 9 - Prob. 9.2.2PCh. 9 - Prob. 9.3.1PCh. 9 - Prob. 9.3.2P
Ch. 9 - Prob. 9.4.1PCh. 9 - Prob. 9.4.2PCh. 9 - Prob. 9.4.3PCh. 9 - Prob. 9.4.4PCh. 9 - Prob. 9.4.5PCh. 9 - Prob. 9.5.1PCh. 9 - Prob. 9.5.2PCh. 9 - Prob. 9.5.3PCh. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Prob. 9.7.1PCh. 9 - Prob. 9.7.2PCh. 9 - Prob. 9.7.3PCh. 9 - Prob. 9.7.4PCh. 9 - Prob. 9.8.1PCh. 9 - Prob. 9.8.2PCh. 9 - A beam must be designed to the following...Ch. 9 - Prob. 9.8.4PCh. 9 - Prob. 9.8.5PCh. 9 - Prob. 9.8.6PCh. 9 - Prob. 9.8.7PCh. 9 - Prob. 9.8.8PCh. 9 - Use the composite beam tables and select a W-shape...Ch. 9 - Prob. 9.8.10PCh. 9 - Prob. 9.10.1PCh. 9 - Prob. 9.10.2P
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