The open web design of truss joints: Select one:

a. restricts the spread of fire to the component's length.

b. permits rapid fire spread in multiple directions.

c. allows firefighters to operate longer on a roof during a fire.

d. provides greater stability than a heavy beam during a fire.

b. permits rapid fire spread in multiple directions

Explanation:

This occurs because the open web design of truss joints creates a cockloft (truss loft) on each floor which permits fire spread in all directions and it is dangerous for fire fighters.

The correct option is d)

provides greater stability than a heavy beam during a fire.

Explanation:

Trusses are used to carry loads and are sometimes used to transfer structures. Truss are widely used to serve two functions;

1. To carry the roof load

11. To provide horizontal stability.

Therefore option d) is the right option.

provides greater stability than a heavy beam during a fire.