Question

What is the load factor considered for steel structures when combination of dead load and earthquake load is considered?

(a) 1.5

(b) 1.3

(c) 1.2

(d) 1.7

I had been asked this question during an online exam.

My question is based upon Determination of Earthquake Loads in division Structural Analysis, Loading and Load Combinations of Design of Steel Structures

Answer 1

Correct answer is (d) 1.7

Explanation: In plastic design of steel structures, load factor is 1.7 when combination of dead load and earthquake load is considered i.e.  1.7(DL + EL) or 1.7(DL – EL).