Coffee Break Training: Fire Protection Series: Automatic Sprinklers: Sprinkler System Design: Tree (Dead End), Looped or Gridded? (Part 6) [open pdf - 155KB]
"Learning Objective: The student will be able to describe the differences among tree (dead-end), looped or gridded sprinkler system layouts. Sprinkler system designers plan their layouts to achieve both economic and hydraulic efficiency while assuring the hazard is adequately protected. They select pipe sizes for risers, mains and branch lines based on a combination of factors including such things as material size and weight, water carrying capacity, flow characteristics, and material and installation costs."
Coffee Break Training - Fire Protection Series No. FP-2014-35
United States Fire Administration: http://www.usfa.fema.gov/