FIRE FLOW APPLICATION ACCESS
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Fire Flow Application
FIRE FLOW REQUIREMENTS FOR BUILDINGS
FIRE-FLOW. The flow rate of a water supply, measured at 20 pounds per square inch (psi) residual pressure, that is available for firefighting.
FIRE-FLOW REQUIREMENTS FOR BUILDINGS
One- and Two-family dwellings, Group R-3 and R-4 buildings and townhouses. The minimum fire-flow and flow duration requirements for one- and two-family dwellings, Group R-3 and R-4 buildings and townhouses shall be as specified in Tables B105.1(1) and B105.1(2). See below
Buildings other than one- and two-family dwellings, Group R-3 and R-4 buildings and townhouses. The minimum fire-flow duration for buildings other than one- and two-family dwellings, Group R-3 and R-4 buildings and townhouses shall be as specified in Tables B105.2 and B105.1(2). See below
Table B105.1(1)
REQUIRED FIRE-FLOW FOR ONE-AND TWO-FAMILY DWELLINGS, GROUP R-3 AND R-4 BUIDLINGS AND TOWNHOUSES
| 0 - 3,600 |
No automatic sprinkler system |
1,000 |
1 |
| 3,601 and greater |
No automatic sprinkler system |
Value in Table B105.1(2) |
Duration in Table B105.1(2) at the required fire-flow rate |
| 0 - 3,600 |
Section 903.3.1.3 of the International Fire Code or
Section P2904 of the International Residential Code |
500 |
1/2 |
| 3,601 and greater |
Section 903.3.1.3 of the International Fire Code or
Section P2904 of the International Residential Code |
1/2 value in Tbale B105.1(2) |
1 |
For SI: 1 square foot = 0.0929 m², 1 gallon per minute = 3.785 L/m
Table B105.1(2)
REFERENCE TABLE FOR TABLES B105.1(1) AND B105.2
| TYPE 1A AND 1B (a*) |
TYPE IIA AND IIIA
(a*) |
TYPE IV AND V-A
(a*) |
TYPE IIB AND IIIB
(a*) |
TYPE V-B
(a*) |
| 0 - 22, 700 |
0-12,700 |
8-8,200 |
0-5,900 |
0-3,600 |
1,500 |
2 |
| 22,701-30,200 |
12,701-17,000 |
8,201-10,900 |
5,901-7,900 |
3,601-4,800 |
1,750 |
| 30,201-38,700 |
17,001-21,800 |
10,901-12,900 |
7,901-9,800 |
4,801-6,200 |
2,000 |
| 38,701-48,300 |
21,801-24,200 |
12,901-17,400 |
9,801-12,600 |
6,201-7,700 |
2,250 |
| 48,301-59,000 |
24,201-33,200 |
17,401-21,300 |
12,601-15,400 |
7,701-9,400 |
2,500 |
| 59,001-70,900 |
33,201-39,700 |
21,301-25,500 |
15,401-18,400 |
9,401-11,300 |
2,750 |
| 70,901-83,700 |
47,101-54,900 |
25,501-30,100 |
18,401-21,800 |
11,301-13,400 |
3,000 |
3
|
| 83,701-97,700 |
47,101-54,900 |
30,101-35,200 |
21,801-25,900 |
13,401-15,600 |
3,250 |
| 97,701-112,700 |
54,901-63,400 |
35,201-40,600 |
25,901-29,300 |
15,601-18,000 |
3,500 |
| 112,701-128,700 |
63,401-72,400 |
40,601-46,400 |
29,301-33,500 |
18,001-20,600 |
3,750 |
| 128,701-145,900 |
72,401-82,100 |
46,401-52,500 |
33,501-37,900 |
20,601-23,300 |
4,000 |
4
|
| 145,901-164,200 |
82,101-92,400 |
52,501-59,100 |
37,901-42,700 |
23,301-26,300 |
4,250 |
| 164,201-183,400 |
92,401-103,100 |
59,101-66,000 |
42,701-47,700 |
26,301-29,300 |
4,500 |
| 183,401-203,700 |
103,101-114,600 |
66,001-73,300 |
47,701-53,000 |
29,301-23,600 |
4,750 |
| 203,701-225,200 |
114,601-126,700 |
73,301-81,100 |
53,001-58,600 |
32,601-36,000 |
5,000 |
| 225,201-247,700 |
126,701-139,400 |
81,101-89,200 |
58,601-65,400 |
36,001-39,600 |
5,250 |
| 247,701-271,200 |
139,401-152,600 |
89,201-97,700 |
65,401-70,600 |
39,601-43,400 |
5,500 |
| 271,201-295,900 |
152,601-166,500 |
97,701-106,500 |
70,601-77,000 |
43,401-47,400 |
5,750 |
| 259,901-Greater |
166,501-Greater |
106,501-115,800 |
77,001-83,700 |
47,401-51,500 |
6,000 |
| - |
- |
115,801-125,500 |
83,701-90,600 |
51,501-55,700 |
6,250 |
| - |
- |
125,501-135,500 |
90,601-97,900 |
55,701-60,200 |
6,500 |
| - |
- |
135,501-145,800 |
97,901-106,800 |
60,201-64,800 |
6,750 |
| - |
- |
145,801-156,700 |
106,801-113,200 |
64,801-69,600 |
7,000 |
| - |
- |
156,701-167900 |
113,201-121,300 |
69,601-74,600 |
7,250 |
| - |
- |
167,901-179,400 |
121,301-129,600 |
74,601-79,800 |
7,500 |
| - |
- |
179,401-191,400 |
129,601-138,300 |
79,801-85,100 |
7,750 |
| - |
- |
191,401-Greater |
138,301-Greater |
85,101-Greater |
8,000 |
For SI: 1 square foot = 0.0929 m², 1 gallon per minute = 3.785 L/m, 1 pound per square inch = 6.895 kPa.
a*. Types of construction are based on the
International Building Code.
b*. Measured at 20 psi residual pressure.
Table B105.2
REQUIRED FIRE-FLOW FOR BUILDINGS OTHER THAN ONE- AND TWO-FAMILY DWELLINGS, GROUP R-3 AND R-4 BUILDINGS AND TOWNHOUSES
| No automatic sprinkler system |
Value in Table B105.1(2) |
Duration in Table B105.1(2) |
| Section 903.3.1.1 of the International Fire Code |
25% of the value in Table B105.1(2) a* |
Duration in Table B105.1(2) at the reduced flow rate |
| Section 903.3.1.2 of the International Fire Code |
25% of the value in Table B105.1(2) b* |
Duration in Table B105.1(2) at the reduced flow rate |
For SI: 1 gallon per minute = 3.785 L/m
a*. The reduced fire-flow shall not be less than 1,000 gallons per minute
b*. The reduced fire-flow shall not be less than 1,500 gallons per minute