We have a project that was pre-engineered. It has several issues that we are having to correct. One is something I haven’t considered. We have a concealed combustible space that requires 130 sq ft max spacing. The pendents are 225 sq ft max spacing. All of the walls for the office spaces – think medical office type project – are full height to deck and drywalled. Is there any reason you wouldn’t use the small room method for determining area per sprinkler for the SSU in the concealed space? For example, the room may be 120 sq ft for example. However, the SSU located by the FPE is 6’ off the north wall and 6’ off the west wall. Using SxL, this would be 144 sq ft per sprinkler. But, if the space above the ceiling could be treated as a small room, then the area per sprinkler could be the room area divided by the number of sprinklers in the room. This would mean the sprinkler is 120 sq ft per sprinkler. This happens in several places. There are many instances where I can just move the sprinkler to be more centered and solve the problem, but not all areas. So, would you consider that space above the ceiling to be allowed to follow small room rules?
Travis Mack, CFPS, CWBSP, RME-G, SET Engineering Manager MFP Design 3356 E Vallejo Ct Gilbert, AZ 85298 NEW EXTENSION: 480-505-9271 ext. 700 NEW MOBILE: 480-272-2471 [email protected] www.mfpdesign.com Send large files to us via: https://www.hightail.com/u/MFPDesign LinkedIn: https://www.linkedin.com/in/travismack “The bitterness of poor quality remains long after the sweetness of low price is forgotten.” Need/Want a faster way to check material pricing? Build a material quote? Check availability ? Searching for an invoice? *If you do not already have an account with ferguson.com, click here to register.* **Have a Ferguson account? Download the Ferguson app for on-the-go access to your favorite ferguson.com features. Apple iOS devices or Android devices** _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
