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Which of the following load combination is not considered for design of roof trusses?

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in Design of Steel Structures by (962k points)
Which of the following load combination is not considered for design of roof trusses?

(a) Dead load + crane load

(b) Dead load + wind load

(c) Dead load + earthquake load

(d) Dead load + live load + wind load

This question was posed to me by my school teacher while I was bunking the class.

This intriguing question originated from Gantry Girders & Design of Industrial Buildings topic in chapter Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures

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Correct answer is (c) Dead load + earthquake load

The best I can explain: Earthquake loads are not significant for roof trusses because of the small self weights. The following load combinations can be considered : (i) Dead load + snow load, (ii) Dead load + partial/full live load, (iii) dead load + live load + internal positive air pressure, (iv) dead load + live load + internal suction air pressure, (v) dead load + live load + wind load.

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