Residential Standard Selection for a Five-Story Hotel
A developer plans a 5-story, 64-ft hotel with 120 guest rooms. The ground floor has a lobby, breakfast area, and a small commercial cooking kitchen; upper floors are guest rooms. The owner's estimator proposes NFPA 13R because 'it is a residential occupancy and 13R is cheaper.' The building has no atrium and no open parking garage. The local fire official has not reviewed the plans yet. The contractor is asked to bid the sprinkler system using 13R and to note that a variance can be obtained if the state objects. The project is in an Ohio jurisdiction that enforces the Ohio Fire Code. The owner wants to open in 10 months and has told the contractor that the sprinkler bid is the deciding factor. The contractor's estimator has not read the local amendments.
1. Is NFPA 13R permitted as the design standard for this hotel? Justify the answer using the building facts.
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No. NFPA 13R is limited to residential occupancies up to and including four stories in height. This hotel is five stories, so the height limit is exceeded regardless of the fact that hotels are residential occupancies and regardless of the 64-ft dimension. The absence of an atrium or open parking garage does not remove the story limit. The correct baseline standard is NFPA 13 for the building's automatic sprinkler system. In addition, the ground-floor commercial cooking kitchen will need a separate kitchen hood suppression system designed to the applicable standard; 13R does not cover commercial cooking equipment. Bidding 13R would produce a system that the AHJ should reject at plan review and that would not match the approved construction documents.
2. If the contractor bids NFPA 13 instead, what design and contract implications should it flag to the owner?
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The contractor should explain that NFPA 13 will generally require more conservative hydraulic design, more restrictive sprinkler spacing and coverage, and a different scope of shop drawings and calculations than 13R. The bid should include hydraulic calculations, a full NFPA 13 layout, and coordination with the kitchen suppression system and fire alarm devices. The contractor should also flag schedule risk: plan review and permit approval may take longer than the owner's 10-month target, and any value-engineering after award will require revised calculations and AHJ approval. The contract should state the standard clearly and exclude any 13R assumption. If the owner insists on a 13R price, the contractor should provide it only as a noncompliant alternate, in writing, so there is no later dispute that the bid was based on the wrong standard.
3. How should the contractor respond to the suggestion that a variance can be obtained if the state objects?
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The contractor should not treat a variance as a routine scheduling tool or promise one to the owner. A code variance is an AHJ or state-level determination based on specific hardship or equivalency criteria, not a contractor's pricing option. The contractor can tell the owner that it will design to NFPA 13 unless and until the owner obtains a written approval from the authority having jurisdiction, and that any approved alternate would still need to be reflected in the permit drawings. If the owner wants to pursue a variance, that is the owner's responsibility, with the designer's technical support if requested. The contractor should document the conversation and avoid starting design or fabrication on a 13R basis. Proceeding on an unapproved assumption would risk rejected plans, a change order, and possible licensing complaints for installing a system not conforming to the approved documents.