CCS style sprinklers are generally listed to a maximum 2:12 pitch so IMO this is the best indicator of the difference between an attic space and a combustible ceiling space requiring special sprinklers; and yes, by requiring special sprinklers in the horizontal CCS 9.3.2 by default prohibits standard spray sprinklers.
Cary Webber CFPS Director, Technical Services Reliable Automatic Sprinkler Co., Inc. 1470 Smith Grove Road, Liberty, SC 29657 Tel: 864-843-5161 -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of JD Gamble via Sprinklerforum Sent: Thursday, January 28, 2021 9:22 AM To: [email protected] Cc: JD Gamble <[email protected]> Subject: Horizontal Combustible Concealed Space CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you can confirm the sender and know the content is safe. NFPA Glossary of Terms 2019 ed. Attic: The space located between the ceiling of a story and the roof directly above that habitable story. Question: When does an attic become a Horizontal CC Space? And vice versa? Question: Do the rules of NFPA 13, 9.3.2 (2019 ed) specifically prohibit the use of standard spray sprinklers for Horizontal CC Spaces? Thanks, JD Gamble LSS of Sheridan, Inc. _______________________________________________ Sprinklerforum mailing list [email protected] https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.firesprinkler.org%2Flistinfo.cgi%2Fsprinklerforum-firesprinkler.org&data=04%7C01%7Ccwebber%40reliablesprinkler.com%7Cb04abee5f9eb45a874c808d8c39818dd%7C361f92efbca442cdaf0d8099acee2244%7C0%7C0%7C637474405719403620%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=nCXAsRkRapMnyd9ElUUNyMLj%2FxWLCiKz9jQQ0K9E0uM%3D&reserved=0 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
