No, it cannot be applied to a dry system. A single interlock is often used as the detection system charges the piping before sprinkler activation making it operate more like a wet system.
Craig Prahl | Jacobs | Fire Protection SME - EV, AM, DC, Special Hazards [email protected]<mailto:[email protected]> | www.jacobs.com<https://urldefense.com/v3/__http:/www.jacobs.com/__;!!KZTdOCjhgt4hgw!-_khxU8gU0_6jc895I7kRbnU8JghRDsWgqOblZ4jr7Qp2IVbR30VYw_hWvNFtphnl0uWpB9KIvbYi1pvZz4$> 1041 East Butler Road Greenville, South Carolina 29606 CONTACT BY: Phone 1-864-676-5252, Email or MS TEAMS From: Brian Harris <[email protected]> Sent: Thursday, September 10, 2026 11:11 AM To: [email protected] Subject: [EXTERNAL] [Sprinklerforum] NFPA-13 Table 17.2.2.1 Looking for some clarification: Working on a warehouse storing Group A plastics, assume nonexpanded, exposed (in cardboard boxes but the front is open), open shelves, double and single racks. The kicker is the warehouse isn't heated so Looking for some clarification: Working on a warehouse storing Group A plastics, assume nonexpanded, exposed (in cardboard boxes but the front is open), open shelves, double and single racks. The kicker is the warehouse isn't heated so looking at a dry system. Table 17.2.2.1 only list system types as wet. However, 17.2.2.4 talks about preaction systems shall be considered as dry when using Table 17.2.2.1. Sooooo, can table 17.2.2.1 be used on a dry system? Thank you, Brian Harris, CET BVS Systems Inc. bvssystemsinc.com<https://urldefense.com/v3/__http:/bvssystemsinc.com/__;!!B5cixuoO7ltTeg!DyKFNMzYIDikkWwADDk2OKgZ9FUAg1txfrmndqbS8iYmSMOUYxnT20eMsf47wm_UGYRW0MvulurctVOHKKDP_VS_$> Phone: 704.896.9989 Fax: 704.896.1935 [cid:[email protected]] ________________________________ NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message by unintended recipients is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer.
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