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NOTE: This is an unformatted excerpt from our online fire protection training library.

Hydraulic Calculations

Hydraulic Design

Design Methods & Pipe Schedule Systems

There are four (4) basic design methodsThe room design and density/area method are the most common. The large drop and ESFR methods are primarily applied to high challenge fires, such as in warehousing. when applying hydraulic design to sprinkler systems, and each method has specific rules and requirements.  Each of the following methods will be discussed in this course:
room design method
density/area method   large drop sprinkler and specific application control mode sprinkler method early suppression fast response (ESFR) sprinkler method
Pipe schedule systems are the earliest form of sprinkler system piping design, and there are still many buildings with pipe schedule sprinkler systems installed, and still in operation today.  The details of the pipe schedule system are outlined in another course of this program. 

Since the advent of the computer, pipe schedule systems have been installed less frequently, but it is still acceptable to install them in limited situationsNew pipe schedule systems are limited to a maximum of 5,000 sq. ft., and new extra hazard occupancies can not be protected by pipe schedule systems. However, any existing pipe schedule system can be extended using pipe schedules, even if it is an extra hazard system..

Also, keep in mind that any sprinkler system, even a pipe schedule system, has hydraulic capabilities.  It may take some time and routine drafting to plot out the system and determine its capabilities. But once the drafting work is done, using a computer program makes it possible to determine any system's hydraulic capabilities.  If there is a question about a sprinkler system's capabilityThe capability is determined by calculation, and the calculation requirements are based on the occupancy the system protects. If one is not sure, calculate the system's discharge capabilites. These calculations will determine if the system is adequate, or re-vamping the system is necessary., the system should be put through a hydraulic analysis.

Pipe schedule layout example
NOTE: This is an unformatted excerpt from our online fire protection training library.

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