A water curtain is for a vertical opening not a horizontal. Why do they think this opening needs to be protected?
We have limited information but I do not think any addition protection would be required because there is an opening in these walls. I cannot find any special requirements in 13 for horizontal openings, only vertical. Ryan Labrie Fire Protection Designer Critical System Solutions, LLC 2830 Scherer Drive, Suite 300 St. Petersburg, FL 33716 Office: 727.209.5122 Fax: 727.209.5126 Cell: 813.394.3978 Email: [email protected]<mailto:[email protected]> [cid:[email protected]] From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, May 18, 2017 7:54 AM To: Sprinkler Forum <[email protected]> Subject: Water curtain for wall opening I have been asked to look at a situation in an industrial occupancy where there are two garage -door size horizontal openings in a wall. The openings cannot realistically be closed, so they are asking about a water curtain. I have a couple of questions: First, NFPA 13 discusses water curtains around vertical openings but not horizontal, from what i found. Am i missing something? Second, the ceiling is approximately 12 ft above the top of the openings. The sprinklers need to be 12" from the deck max. Will that vertical distance create an issue with the water curtain performance. Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080<tel:860-535-2080> (ofc) 860-553-3553<tel:860-553-3553> (fax) 860-608-4559<tel:860-608-4559> (cell)
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