Smoke removal Flashcards
1
Q
Positive pressure is most efficient when the exhaust opening is between
A
3/4 to 1 3/4 the size of the entrance opening
2
Q
Positive pressure has proven effective against winds of up to
A
25 mph
3
Q
In series blowers
A
1st blower 2’ from opening, 2nd blower placed by distance necessary to cover the entrance. this increase the capacity of 1st blower by approx 10%
4
Q
In series using different sized blowers
A
place large blower 2’ back and smaller behind large blower
5
Q
a single 18” blower is adequate for
A
2000 square feet
6
Q
Large blower can blow up to how many stories
A
25 stories
