In general which of the following will help reduce te cost o

In general, which of the following will help reduce te cost of structural steel framing?

I. Use of moment connections in preference to non-moment connections.

II. Use rolled sections rather than built-up sections.

III. Restrict the number of members to a practical minimum.

IV. Use of high-strength steel for all mombers

A) I and III

B) II and III

C) II and IV

D) I, II, III, and IV

Solution

I. Moment connections require additional connecting elements than the non-moment connections. Hence, it will increase the cost.

II. Rolled sections are cheaper as compared to built-up sections as they must be welded and also additional stiffeners will be required. Hence, it is cost effective.

III. Minimum number of members will always reduce the cost.

IV. High srength steel is costlier and hence this option is not cost effective.

Thus, B) II and III is the correct option.