Nfpa 13-2010 - Installation Of Sprinkler System 2010 49 2i3e2

INSTALLATION OF SPRINKLER SYSTEMS

8.1.2* System valves and gauges shall be accessible for operation, inspection, tests, and maintenance. 8.2 System Protection Area Limitations. 8.2.1 The maximum floor area on any one floor to be protected by sprinklers supplied by any one sprinkler system riser or combined system riser shall be as follows:

8.3.1.5.2* Protective caps and straps shall be removed from all sprinklers prior to the time when the sprinkler system is placed in service. 8.3.1.5.3 Protective caps and straps on all upright sprinklers or on any sprinklers installed more than 10 ft (3 m) above the floor shall be permitted to be removed from sprinklers immediately following their installation.

(1) Light hazard — 52,000 ft2 (4831 m2) (2) Ordinary hazard — 52,000 ft2 (4831 m2) (3) Extra hazard (a) Pipe schedule — 25,000 ft2 (2323 m2) (b) Hydraulically calculated — 40,000 ft2 (3716 m2) (4) Storage — High-piled storage (as defined in 3.9.1.17) and storage covered by other NFPA standards — 40,000 ft2 (3716 m2)

8.3.2 Temperature Ratings.

8.2.2 The floor area occupied by mezzanines shall not be included in the area limits of 8.2.1.

8.3.2.3 High-temperature sprinklers shall be permitted to be used throughout ordinary and extra hazard occupancies and as allowed in this standard and other NFPA codes and standards.

8.2.3 Where single systems protect extra hazard, high-piled storage, or storage covered by other NFPA standards, and ordinary or light hazard areas, the extra hazard or storage area coverage shall not exceed the floor area specified for that hazard and the total area coverage shall not exceed 52,000 ft2 (4831 m2). 8.2.4 Multiple buildings attached by canopies, covered breezeways, common roofs, or a common wall(s) shall be permitted to be supplied by a single fire sprinkler riser. The maximum system size shall comply with 8.2.1. 8.2.5* Detached Buildings. 8.2.5.1 Unless the requirements of 8.2.5.2 apply, detached buildings, regardless of separation distance, that do not meet the criteria of 8.2.4 shall be provided with separate fire sprinkler systems. 8.2.5.2 When acceptable to the authority having jurisdiction, detached structures shall be permitted to be supplied by the fire sprinkler system of an adjacent building. 8.3 Use of Sprinklers. 8.3.1 General. 8.3.1.1* Sprinklers shall be installed in accordance with their listing. 8.3.1.2 The requirements of 8.3.1.1 shall not apply where construction features or other special situations require unusual water distribution, and listed sprinklers shall be permitted to be installed in positions other than anticipated by their listing to achieve specific results. 8.3.1.3* Upright sprinklers shall be installed with the frame arms parallel to the branch line, unless specifically listed for other orientation. 8.3.1.4 Where solvent cement is used as the pipe and fittings bonding agent, sprinklers shall not be installed in the fittings prior to the fittings being cemented in place. 8.3.1.5 Protective Caps and Straps. 8.3.1.5.1* Protective caps and straps shall be removed using means that are in accordance with the manufacturer’s installation instructions.

2010 Edition

8.3.2.1* Unless the requirements of 8.3.2.2, 8.3.2.3, 8.3.2.4, or 8.3.2.5 are met, ordinary- and intermediate-temperature sprinklers shall be used throughout buildings. 8.3.2.2 Where maximum ceiling temperatures exceed 100°F (38°C), sprinklers with temperature ratings in accordance with the maximum ceiling temperatures of Table 6.2.5.1 shall be used.

8.3.2.4 Sprinklers of intermediate- and high-temperature classifications shall be installed in specific locations as required by 8.3.2.5. 8.3.2.5* The following practices shall be observed to provide sprinklers of other than ordinary-temperature classification unless other temperatures are determined or unless hightemperature sprinklers are used throughout, and temperature selection shall be in accordance with Table 8.3.2.5(a), Table 8.3.2.5(b), and Figure 8.3.2.5: (1) Sprinklers in the high-temperature zone shall be of the high-temperature classification, and sprinklers in the intermediate-temperature zone shall be of the intermediate-temperature classification. (2) Sprinklers located within 12 in. (305 mm) to one side or 30 in. (762 mm) above an uncovered steam main, heating coil, or radiator shall be of the intermediatetemperature classification. (3) Sprinklers within 7 ft (2.1 m) of a low-pressure blowoff valve that discharges free in a large room shall be of the high-temperature classification. (4) Sprinklers under glass or plastic skylights exposed to the direct rays of the sun shall be of the intermediatetemperature classification. (5) Sprinklers in an unventilated, concealed space, under an uninsulated roof, or in an unventilated attic shall be of the intermediate-temperature classification. (6) Sprinklers in unventilated show windows having highpowered electric lights near the ceiling shall be of the intermediate-temperature classification. (7) Sprinklers protecting commercial-type cooking equipment and ventilation systems shall be of the high- or extra high–temperature classification as determined by use of a temperature-measuring device. (See 7.10.6.) (8) Sprinklers protecting residential areas installed near specific heat sources identified in Table 8.3.2.5(c) shall be installed in accordance with Table 8.3.2.5(c). (9) Ordinary-temperature sprinklers located adjacent to a heating duct that discharges air that is less than 100°F (38°C) are not required to be separated in accordance with Table 8.3.2.5(a). (10) Sprinklers in walk-in type coolers and freezers with automatic defrosting shall be of the intermediate-temperature classification or higher.

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