residential fire sprinkler system design garage

Sidewall sprinklers under the parking lift platforms are not required to be included in the area of sprinkler operation. The hydraulic calculation design criteria shall include all ceiling-level sprinklers within a minimum 2,500 sf area of sprinkler operation, or the maximum area containing car stackers/lift systems extending 15 feet into adjacent areas that do not contain car stackers/lift systems. Each sidewall sprinkler shall cover an area of 80 square feet or less. In addition, non-extended coverage standard-response sidewall sprinklers listed for Ordinary Hazard shall be acceptable for use under the parking lift platform. Parking garage areas containing Car Stackers / lift systems with a single lift platform shall be protected by an automatic wet-pipe sprinkler system designed to Extra Hazard Group 2 (EH2) for a maximum of two cars stacked vertically in the same location. The sprinkler design criteria for car stackers/lift systems must extend 15 feet into adjacent areas that do not contain car stackers/lift systems per 2022 NFPA 13 Section 19.1.2. This AB does not apply for Mechanical-Access enclosed parking garages per 2022 CBC Section 406.6.4 which will require a separate specially engineered automatic sprinkler system.

Purpose: Provide additional SFFD guidelines for sprinkler protection of car stackers not specifically addressed in 2022 NFPA 13.

Residential fire sprinkler system design garage