I have a question about protection of sprinklers in windows specifically for a connection of a basement parking garage and a first level mall commercial space. NFPA 101 accepts that there is a connection between both occupancies, but there must be compartmentalization of 3-hours without automatic sprinklers and 2-hours with automatic sprinklers. In this case, we have an escalator from the basement up to level 1, as shown below: Can we consider this to be compartmentalized with glass and sprinklers on both sides of the glass? Do the access doors have to be 1-1/2 hour, our could they not have any fire resistance if I have sprinklers on both sides? This project is under NFPA 101 (specifically Table 6.1.14.4.1 for separation between occupancies), NFPA 5000, and NFPA 13 (9.3.5/19.4.3 for sprinkler protection of windows). Posted anonymously for discussion. Discuss This | Submit Your Question | Subscribe
2 Comments
Franck
11/27/2020 01:38:59 am
It may depends on the AHJ if he recognizes that the sprinkler protection can act as a 1h fire barrier (if the parking is fully sprinkler protected, the 2h requirement can be reduced to 1h, see § 5.2.2 below).
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Franck Orset
11/27/2020 01:43:36 am
Be anyway careful with the sprinkler protection of the parking structure.
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