Distance Between Buildings
(in feet)
|
Needed Fire Flow
(gallons per minute)
|
---|---|
Over 100
|
500
|
31 to 100
|
750
|
11 to 30
|
1,000
|
10 or less
|
1,500
|
NFF = (C)(O) [1 + (x + P)]
| ||
NFF = Needed fire flow
C = Construction factor:
| ||
*
*
|
Considers the area of the subject building
Considers the construction class (wood, masonry,
fire resistant, etc.)
| |
O = Occupancy factor:
| ||
*
|
Considers the combustibility of the materials
in the subject building.
| |
x = Exposure factor:
| ||
*
|
Considers the fire spread between the subject
building and the adjacent buildings (length and height of building,
and openings in exposed walls)
| |
P = Communications factor:
| ||
*
|
Considers the protection provided in the communicating
walls, the construction of the walls, and the length of the walls.
|