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Council discusses requiring full NFPA 13 sprinkler systems for four‑story single‑exit housing
Summary
Building Code Council members debated whether four‑story single‑exit R‑2 buildings should require full NFPA 13 sprinkler systems or the lighter 13R alternative, weighing life‑safety benefits against cost and water‑flow impacts.
The Building Code Council discussed whether single‑exit residential buildings taller than three stories should be required to use a full NFPA 13 sprinkler system rather than a 13R system, focusing most sharply on four‑story buildings that the draft proposal would newly permit to use the single‑exit option.
Council members said the full 13 system provides broader sprinkler coverage — including attics, closets and higher water‑density discharge — while 13R is limited to a lower density and does not always protect…
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