TL;DR
A hydraulic calculation is the engineering analysis behind a fire sprinkler design that proves the water supply can push the required flow and pressure through the piping to the hydraulically most demanding heads. Performed to NFPA 13 methods using density and design-area criteria for the hazard class, it accounts for pipe friction, elevation, and fittings, and its results justify every pipe size on the drawings.
What it means
A hydraulic calculation is the engineering analysis behind a fire sprinkler design that proves the water supply can push the required flow and pressure through the piping to the hydraulically most demanding heads. Performed to NFPA 13 methods using density and design-area criteria for the hazard class, it accounts for pipe friction, elevation, and fittings, and its results justify every pipe size on the drawings. Plan reviewers compare the calculation summary against a recent flow test of the supply before stamping the permit set.
Where it sits in the glossary
Hydraulic calculation is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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