Design Steel Structures Purlins Online Exam Quiz
Design Steel Structures Purlins GK Quiz. Question and Answers related to Design Steel Structures Purlins. MCQ (Multiple Choice Questions with answers about Design Steel Structures Purlins
Which of the following relation is correct for design of channel/I-section purlin?
Options
A : (Mz/Mdz) + (My/Mdy) ? 1
B : (Mz/Mdz) + (My/Mdy) ? 1
C : (Mdz/Mz) + (My/Mdy) ? 1
D : (Mdz/Mz) + (Mdy/My) ? 1
For which of the following slope of roof truss, angle section purlin can be used?
Options
A : 25?
B : 50?
C : 75?
D : 60?
What are purlins?
Options
A : beams provided in foundation
B : beams provided above openings
C : beams provided over trusses to support roofing
D : beams provided on plinth level
While erecting channel section purlins, it is desirable that they are erected over rafter with their flange
Options
A : facing down slope
B : facing up slope
C : does not depend whether up slope or down slope
D : flanges are placed randomly
The design capacity of channel/I-section purlin is given by
Options
A : M = Zp/fy
B : M = Zp?m0fy
C : M = Zp?m0/fy
D : M = ?m0/fy
The check for design capacity of channel/I-section purlin is given by
Options
A : Mdz ? 1.2Zeyfy/?m0, Mdy ? 2.4Zezfy/?m0
B : Mdz ? Zezfy/?m0, Mdy ? 1.2Zeyfy/?m0
C : Mdz ? ?fZeyfy/?m0, Mdy ? 1.2Zezfy/?m0
D : Mdz ? 1.2Zezfy/?m0, Mdy ? ?fZeyfy/?m0
Purlin section is subjected to
Options
A : not subjected to bending or twisting
B : twisting only
C : symmetrical bending
D : unsymmetrical bending
Sag rods are provided at
Options
A : one-third points between roof trusses
B : end of span
C : two-third points between roof trusses
D : are never provided
Theoretically, purlins are generally placed at
Options
A : only at panel points
B : only at edges
C : only at mid span
D : only at corners of roof
When one sag rod is used, the moment about web axis
Options
A : reduces by 50%
B : increases by 50%
C : increases by 75%
D : reduces by 75%
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