Heads up: There are no amended sections in this chapter.
The requirements of Chapter 12 shall apply unless modified by this chapter.
The water supply system for automatic fire protection systems shall be designed for a minimum duration of 2 hours.
For ESFR sprinklers, the water supply duration shall be 1 hour.
At least 500 gpm (1900 L/min) shall be added to the sprinkler demand for large and small hose stream allowance.
For ESFR sprinklers, the hose stream allowance shall be for 250 gpm (946 L/min).
The water supply design shall include the demand of the automatic sprinkler system plus the hose stream allowance plus, where provided, the high-expansion foam system.
Wet pipe systems shall be used in tissue storage areas.
Horizontal storage of heavyweight or mediumweight paper shall be protected as a closed array.
Mediumweight paper shall be permitted to be protected as heavyweight paper where wrapped completely on the sides and both ends, or where wrapped on the sides only with steel bands. Wrapping material shall be either a single layer of heavyweight paper with a basis weight of 40 lb (18.1 kg) or two layers of heavyweight paper with a basis weight of less than 40 lb (18.1 kg).
Lightweight paper or tissue paper shall be permitted to be protected as mediumweight paper where wrapped completely on the sides and both ends, or where wrapped on the sides only with steel bands. Wrapping material shall be either a single layer of heavyweight paper with a basis weight of 40 lb (18.1 kg) or two layers of heavyweight paper with a basis weight of less than 40 lb (18.1 kg).
For purposes of sprinkler system design criteria, lightweight class paper shall be protected as tissue.
Storage of heavyweight or mediumweight classes of rolled paper up to 10 ft (3.1 m) in height shall be protected by sprinklers designed for ordinary hazard Group 2 densities.
Storage of tissue and lightweight classes of paper up to 10 ft (3.1 m) in height shall be protected by sprinklers in accordance with extra hazard Group 1 densities.
Sprinkler design criteria for storage of roll paper 10 ft (3.1 m) high and higher in buildings or structures with roof or ceilings up to 30 ft (9.1 m) shall be in accordance with Table 19.1.2.1.3(a) and Table 19.1.2.1.3(b).

Table 19.1.2.1.3(a) Control Mode Density/Area Sprinkler Protection Criteria for Roll Paper Storage for Buildings or Structures with Roof or Ceilings Up to 30 ft (Discharge Densities are gpm/ft2 over ft2)

Storage Height (ft) Clearance to Ceiling (ft) Heavyweight Mediumweight Tissue All Storage Arrays
Closed Array Banded or Unhanded Standard Array Open Array Closed Array Banded or Unhanded Standard Array Open Array Banded or Unhanded
Banded Unbanded Banded Unhanded Banded Unhanded
10 ≤5 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.45/2000
10 >5 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.3/2000 0.45/2500
15 ≤5 0.3/2000 0.3/2000 0.3/2000 0.3/2500 0.3/3000 0.3/2000 0.3/2000 0.45/2500 0.45/2500 0.60/2000
15 >5 0.3/2000 0.3/2000 0.3/2000 0.3/3000 0.3/3500 0.3/2000 0.3/2500 0.45/3000 0.45/3000 0.60/3000
20 ≤5 0.3/2000 0.3/2000 0.3/2500 0.45/3000 0.45/3500 0.3/2000 0.45/2500 0.6/2500 0.6/2500 0.75/2500
20 >5 0.3/2000 0.3/2500 0.3/3000 0.45/3500 0.45/4000 0.3/2500 0.45/3000 0.6/3000 0.6/3000 0.75/3000
25 ≤5 0.45/2500 0.45/3000 0.45/3500 0.6/2500 0.6/3000 0.45/3000 0.6/3000 0.75/2500 0.75/2500 see Note 1
Notes:
(1) Sprinkler protection requirements for tissue stored above 20 ft have not been determined.
(2) Densities or areas, or both, shall be permitted to be interpolated between any 5 ft storage height increment.

Table 19.1.2.1.3(b) Control Mode Density/Area Sprinkler Protection Criteria for the Protection of Roll Paper Storage for Buildings or Structures with Roof or Ceilings Up to 9.1 m (Discharge Densities are mm/min over m2)

Storage Height (m) Clearance to Ceiling (m) Heavyweight Mediumweight Tissue All Storage Arrays
Closed Array Banded or Unbanded Standard Array Open Array Closed Array Banded or Unhanded Standard Array Open Array Banded or Unhanded
Banded Unbanded Banded Unbanded Banded Unbanded
3.1 ≤1.5 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 18.3/185.8
3.1 >1.5 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 12.2/185.8 18.3/232.3
4.6 ≤1.5 12.2/185.8 12.2/185.8 12.2/185.8 12.2/232.3 12.2/278.7 12.2/185.8 12.2/185.8 18.3/232.3 18.3/232.3 24.5/185.8
4.6 >1.5 12.2/185.8 12.2/185.8 12.2/185.8 12.2/278.7 12.2/322.2 12.2/185.8 12.2/232.3 18.3/278.7 18.3/278.7 24.5/278.7
6.1 ≤1.5 12.2/185.8 12.2/185.8 12.2/232.3 18.3/278.7 18.3/325.2 12.2/185.8 18.3/232.3 24.5/232.3 24.5/232.3 30.6/232.3
6.1 >1.5 12.2/185.8 12.2/232.3 12.2/278.7 18.3/325.2 18.3/371.6 12.2/232.3 18.3/278.7 24.5/278.7 24.5/278.7 30.6/278.7
7.6 ≤1.5 18.3/232.3 18.3/278.7 18.3/325.2 24.5/232.3 24.5/278.7 18.3/278.7 24.5/278.7 30.6/232.3 30.6/232.3 see Note 1
Notes:
(1) Sprinkler protection requirements for tissue stored above 6.1 m have not been determined.
(2) Densities or areas, or both, shall be permitted to be interpolated between any 1.5 m storage height increment.
High-temperature sprinklers shall be used for installations protecting roll paper stored 15 ft (4.6 m) or higher.
The protection area per sprinkler shall not exceed 100 ft2 (9.3 m2) or be less than 70 ft2 (6.5 m2).
Where high-expansion foam systems are installed in heavyweight class and mediumweight class storage areas, sprinkler discharge design densities shall be permitted to be reduced to not less than 0.24 gpm/ft2 (9.8 mm/min) with a minimum operating area of 2000 ft2 (186m2 ).
Where high-expansion foam systems are installed in tissue storage areas, sprinkler discharge densities and areas of application shall not be reduced below those provided in Table 19.1.2.1.3(a) and Table 19.1.2.1.3(b).
Where automatic sprinkler system protection utilizes CMSA sprinklers, hydraulic design criteria shall be as specified in Table 19.1.2.2.

Table 19.1.2.2 CMSA Sprinklers for Protection of Roll Paper Storage [Number of Sprinklers at Operating Pressure, psi (bar)]

Storage Height Maximum Building Height Nominal K-Factor Type of System Heavyweight Mediumweight Tissue All Storage Arrays
Closed Array Standard Array Open Array Closed Array Standard Array Open Array
ft m ft m Banded or Unbanded Banded Unbanded Banded Unbanded Banded or Unhanded Banded Unbanded Banded Unbanded
20 6.1 30 9.1 11.2 (160) Wet 15 at 50(3.4) 15 at 50(3.4) 15 at 50(3.4) 15 at 50(3.4) NA 15 at 50(3.4) 15 at 50(3.4) 15 at 50(3.4) NA NA See Note
20 6.1 30 9.1 11.2 (160) Dry 25 at 50(3.4) 25 at 50(3.4) 25 at 50(3.4) NA NA 25 at 50(3.4) 25 at 50(3.4) 25 at 50(3.4) NA NA NA
26 7.9 60 18.3 11.2 (160) Wet 15 at 50(3.4) 15 at 50(3.4) 15 at 50(3.4) 15 at 50(3.4) NA NA NA NA NA NA NA
20 6.1 30 9.1 16.8 (240) Wet 15 at 22(1.5) 15 at 22(1.5) 15 at 22(1.5) 15 at 22(1.5) NA 15 at 22(1.5) 15 at 22(1.5) 15 at 22(1.5) NA NA See Note
20 6.1 30 9.1 16.8 (240) Dry 25 at 22(1.5) 25 at 22(1.5) 25 at 22(1.5) NA NA 25 at 22(1.5) 25 at 22(1.5) 25 at 22(1.5) NA NA NA
26 7.9 60 18.3 16.8 (240) Wet 15 at 22(1.5) 15 at 22(1.5) 15 at 22(1.5) 15 at 22(1.5) NA NA NA NA NA NA NA
Note: Base design on 25 AS at 75 psi (5.2 bar) for K-11.2 (160) sprinklers or 25 AS at 35 psi (240) for K-16.8 (240) sprinklers when storage is in closed or standard array; other arrays NA.
NA: Not applicable.
Where automatic sprinkler system protection utilizes ESFR sprinklers, hydraulic design criteria shall be as specified in Table 19.1.2.3. Design discharge pressure shall be applied to 12 operating sprinklers.

Table 19.1.2.3 ESFR Sprinklers for Protection of Roll Paper Storage (Maximum Height of Storage Permitted)

ESFR K-Factor Orientation System Type Pressure Building Height Heavyweight Mediumweight Tissue All Arrays
Closed Standard Open Closed Standard Open
psi bar ft m ft m ft m ft m ft m ft m ft m
14.0 (201) Upright/pendent Wet 50 3.4 30 9.1 25 7.6 25 7.6 25 7.6 25 7.6 25 7.6 25 7.6 NA
16.8 (242) Upright/pendent Wet 35 2.4
22.4 (322) Pendent Wet 25 1.7
25.2 (363) Pendent Wet 15 1.0
14.0 (201) Upright/pendent Wet 75 5.2 35 10.7 30 9.1 30 9.1 30 9.1 NA NA NA NA
16.8 (242) Upright/pendent Wet 52 3.6
Pendent Wet 75 5.2 40 12.2 30 9.1 30 9.1 30 9.1 NA NA NA NA
16.8 (242) Pendent Wet 52 3.6
22.4 (322) Pendent Wet 40 2.8
25.2 (363) Pendent Wet 25 1.7
22.4 (322) Pendent Wet 50 3.4 45 13.7 30 9.1 30 9.1 30 9.1 NA NA NA NA
25.2 (363) Pendent Wet 50 3.4
NA: Not applicable.
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