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Multi-Pipe Huge

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You have asked the following question: “A multi-level parking garage has ramps that lead from level to level. In this case, each level is approximately 28,000 sq. ft. In this 5-story parking garage, can one dry valve serve all 5 levels of parking or is each level subject to the 52,000 sq. ft. limitation?” In response to your question, we have reviewed NFPA 13, 2010 edition that you indicated as the applicable standard. Our informal interpretation is that only one dry-pipe valve is required but there are water delivery restrictions. Check valves with drain connections are not required per floor but it is possible to install them.

There are two criteria that must be satisfied. One is the maximum floor area per system that is assigned based

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