Question

Unit mass of Steel = ________

(a) 785 kg/m^3

(b) 450 kg/m^3

(c) 450 kg/cm^3

(d) 7850 kg/m^3

I have been asked this question in an interview.

This interesting question is from Properties of Steel topic in chapter Materials, Structures and Specifications of Design of Steel Structures

Answer 1

Right answer is (d) 7850 kg/m^3

Explanation: As per IS 800-2007, unit mass of steel is 7850 kg/m³. A steel member with small section which has little self-weight is able to resist heavy loads  because steel members have high strength per unit weight.