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HANGER SPACING CALCULATOR
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Symbol
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Description
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Equation
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Source
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Value
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Units
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Given/Assumed
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-
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Units
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-
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Given
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I-P
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-
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D
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-
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Given
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-
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-
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Given
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-
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-
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Pipe Type
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-
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Given
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-
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WPIPE
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Weight of Empty Pipe
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-
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Given
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WWATER
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Weight of Water
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-
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Given
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WT
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Total Weight
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-
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Given
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T
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Strength of Weakest Hanging
Element
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-
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Manufacturer's Product Data
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lb
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Hanger Spacing
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SC
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Maximum Calculated
Hanger Spacing
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S = T-250 / 5 WT
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NFPA 13 2019 17.1.2
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ft
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S13
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Max. Permissible Spacing per
NFPA 13
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-
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NFPA 13 2019 Table 17.4.2.1
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ft
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SMAX
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Maximum Permissible Hanger
Spacing
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Minimum of SC & S13
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NFPA 13 2019 Table 17.4.2.1
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ft
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References Used
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1
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NFPA 13
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Standard for the
Installation of Fire Sprinkler Systems, 2019 Edition
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