Technical data

TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Road, Hastings MI 49058
Telephone: [phone] Technical Services 877-384-5464 Fax: [phone] Email: [e-mail]
ESFR PRE-PRIMED SINGLE
INTERLOCK PREACTION
COLD STORAGE SYSTEM
Page 9
March 7, 2008
Figure 5 - Example of Remote Area for Darcy-Weisbach Calculation
Center Feed Tree
Typically, when a partial branch line is required in the hydraulic calculations, the sprinklers closer to
the cross main will be used, as shown above. The calculation of the closer sprinklers will result in less
friction loss and a smaller pressure demand on the branch line. At the cross main, a K factor for the
branch lines will need to be determined. The lower pressure requirement will result in a larger K fac-
tor and thus require more water on the partial branch line, typically making the closer sprinklers more
demanding.