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WATER SUPPLY FOR PUBLIC FIRE PROTECTION - Building B
September 15, 2020Page 3571 section
Fire flow requirement calculation sheet for Building B at 9 Erskine Lane.
Building BRequired fire flow: 14,000 L/minOctober 9, 2019
WATER SUPPLY FOR PUBLIC FIRE PROTECTION
Job Name: 9 Erskine Lane Job #: 2253 Date: 9-Oct-19 Name: K. Krajnc
Building B
A. TYPE OF CONSTRUCTION
| Construction Type | Value |
|---|---|
| Fire-Resistive Construction | 0.6 |
| Non-combustible Construction | 0.8 |
| Ordinary Construction | 1.0 |
| Wood Frame Construction | 1.5 |
C = 1.5
B. GROUND FLOOR AREA
1282 m² (1st floor)
C. HEIGHT OF BUILDING IN STOREYS
Height: 5 (Number of floors) *Average Area Total: 6410 m²
D. FIRE FLOW FORMULA
F = 220 · C √A
| Variable | Value |
|---|---|
| C | 1.5 |
| A | 6410 m² |
| F | 26421 L/min |
F (Nearest 1000) : 26000 L/min
E. TOTAL DECREASE FOR OCCUPANCY
| Occupancy Type | Percentage |
|---|---|
| Non-Combustible | -25% |
| Limited Combustible | -15% |
| Combustible | No Change |
| Free Burning | 15% |
| Rapid Burning | 25% |
O = -25 %
T = -6500 L/min
Tt = 19500 L/min
F. DECREASE FOR SPRINKLER PROTECTION
- 50% for complete automatic protection
- 30% for adequately designed systems
- 10% for water supply standard to both domestic and fire department hose lines required
- 10% for fully supervised system
T = 50 %
T = 9750 L/min
G. TOTAL INCREASE OF EXPOSURES
| Seperation | Charge | Seperation | Charge |
|---|---|---|---|
| 0 to 3m | 25% | 20.1 to 30m | 10% |
| 3.1 to 10m | 20% | 30.1 to 40m | 5% |
| 10.1 to 20m | 15% | >45m | 0% |
Directional Charges:
- N = 0%
- S = 0%
- E = 10%
- W = 10%
Total charge: 20% T = 20%
T = 3900 L/min
H. TOTAL FIRE FLOW REQUIREMENT
| Component | Value |
|---|---|
| E = | 19500 L/min |
| F = | 9750 L/min |
| G = | 3900 L/min |
| Final Calculation | Value |
|---|---|
| Total = | 13650 L/min |
| Total = | 14000 L/min |
| Total = | 233.3 L/sec |
| Total = | 3698.4 USGal/min |
| Total = | 3079.6 IGal/min |
Page 357
Extracted from: 2020 09 15 Committee of the Whole Agenda - Agenda - Pdf