What is the value of partial factor of safety for material α for preliminary design for angle section as per IS code for three bolts in connection?(a) 0.6(b) 0.7(c) 0.8(d) 1.0The question was asked in a job interview.The question is from Angles Under Tension and Factors affecting Strength topic in section Design of Tension Members of Design of Steel Structures

What is the value of partial factor of safety for material α for prel

1.	What is the value of partial factor of safety for material α for preliminary design for angle section as per IS code for three bolts in connection?(a) 0.6(b) 0.7(c) 0.8(d) 1.0The question was asked in a job interview.The question is from Angles Under Tension and Factors affecting Strength topic in section Design of Tension Members of Design of Steel Structures
Answer» The CORRECT answer is (b) 0.7 Best explanation: As PER IS code, the equation for PRELIMINARY design of angle tension memberwith partial factor of safety for material is given by Tdn = αAnfy/γm1, where α = 0.6 for one or TWO bolts, 0.7 for two bolts, 0.8 for four or more bolts in the end connection or equivalent WELD length.

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