TFP415
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(a) For coverage area dimensions less than or between those indicated, it is necessary to use the minimum required flow for the next
highest coverage area for which hydraulic design criteria are stated.
(b) Width (backwall where sprinkler is located) x Length (horizontal throw of sprinkler).
(c) Requirement is based on minimum flow in GPM (LPM) from each sprinkler. The associated residual pressures are calculated using
the nominal K-factor. Refer to Hydraulic Design Criteria Section for details..
TABLE B
NFPA 13D AND NFPA 13R WET PIPE HYDRAULIC DESIGN CRITERIA
FOR THE SERIES LFII (TY3334)
RESIDENTIAL HORIZONTAL SIDEWALL AND RECESSED HORIZONTAL SIDEWALL SPRINKLERS
FOR SPRINKLERS LOCATED ALONG A SLOPE AND DISCHARGING ACROSS THE SLOPE
(Greater Than 2 Inch Rise for 12 Inch Run Up To 4 Inch Rise for 12 Inch Run)
Maximum
Coverage
Area
(a)
Width x Length
(b)
Ft. x Ft.
(m x m)
Maximum
Spacing
Ft.
(m)
Minimum Flow
(c)
and Residual Pressure
Two sprinkler design with the sprinklers located along the slope and positioned to
discharge across the slope.
.
Top-Of-Deflector- To- Ceiling:
4 to 6 Inches (100 to 150 mm)
155°F/68°C
175°F/79°C
155°F/68°C
175°F/79°C
Top-Of-Deflector- To- Ceiling:
6 to 12 Inches (150 to 300 mm)
16 x 16
(4,9 x 4,9)
16
(4,9)
24 GPM (90,8 LPM)
18.4 psi (1,27 bar)
24 GPM (90,8 LPM)
18.4 psi (1,27 bar)
24 GPM (90,8 LPM)
18.4 psi (1,27 bar)
24 GPM (90,8 LPM)
18.4 psi (1,27 bar)
ELEVATION
12"
MAXIMUM
4"
