The effect of racking forces is considered in the design of i) lateral braces ii) chord members The correct answer is A. Only (i) B. Only (ii) C. Both (i) and (ii) D. None of the above

The correct answer is C. Both (i) and (ii).

Racking forces are lateral forces that act perpendicular to the plane of a structure. They can be caused by wind, earthquakes, or other loads. Lateral braces are designed to resist racking forces by transferring them to the chord members. Chord members are the main load-bearing members of a structure, and they must be designed to resist the combined effects of racking forces and other loads.

In order to design a structure that is safe and reliable, it is important to consider the effects of racking forces. Both lateral braces and chord members must be designed to resist these forces.

Here is a brief explanation of each option:

• Option A: Only (i). This option is incorrect because chord members must also be designed to resist racking forces.
• Option B: Only (ii). This option is incorrect because lateral braces must also be designed to resist other loads in addition to racking forces.
• Option C: Both (i) and (ii). This option is correct because both lateral braces and chord members must be designed to resist racking forces.
• Option D: None of the above. This option is incorrect because both lateral braces and chord members must be designed to resist racking forces.