TFP410
Page 8 of 10
ELEVATION
12"
8" MAXIMUM
TABLE E
SERIES LFII RESIDENTIAL HORIZONTAL AND RECESSED HORIZONTAL SIDEWALL SPRINKLERS (TY1334)
LOCATED ALONG A SLOPE AND DISCHARGING ACROSS THE SLOPE
NFPA 13D AND 13R HYDRAULIC DESIGN CRITERIA
WET PIPE SYSTEMS
(Greater Than 4-Inch Rise for 12-Inch Run Up to 8-Inch Rise for 12-Inch Run)
Maximum
Coverage Area
(a)
Width x Length
(b)
Ft. x Ft. (m x m)
Maximum
Spacing
Ft. (m)
WET PIPE SYSTEM
Minimum Flow
(c)
and Residual Pressure
(
III
) Three sprinkler design when there are more than two sprinklers in a compartment and
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)
12 x 12 (3,7 x 3,7)
12 (3,7)
III
16 GPM (60,6 LPM)
14.5 psi (1,00 bar)
III
16 GPM (60,6 LPM)
14.5 psi (1,00 bar)
14 x 14 (4,3 x 4,3)
14 (4,3)
III
16 GPM (60,6 LPM)
14.5 psi (1,00 bar)
III
16 GPM (60,6 LPM)
14.5 psi (1,00 bar)
16 x 16 (4,9 x 4,9)
16 (4,9)
III
16 GPM (60,6 LPM)
14.5 psi (1,00 bar)
III
16 GPM (60,6 LPM)
14.5 psi (1,00 bar)
16 x 18 (4,9 x 5,5)
16 (4,9)
N/A
N/A
16 x 20 (4,9 x 6,1)
16 (4,9)
N/A
N/A
(a). For coverage area dimensions less than or between those indicated, use the minimum required flow for the next highest coverage
area for which hydraulic design criteria are stated.
(b). The Width x Length dimension refers to Width (backwall where sprinkler is located) times Length (horizontal throw of sprinkler).
(c). The Minimum Flow 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 in the Design Criteria section for details.
