Restaurant Tenant Fit-Out: License, Permit, and Plan Review Deficiencies
A contractor is replacing the fire sprinkler system in a 3,500 ft² restaurant tenant space in a Maryland county. The base building has an existing 2 in riser and a 6 in fire main. The contractor's Maryland fire sprinkler contractor license expired 45 days ago; the foreman holds a fitter certification, and the company's insurance certificate is current. The owner submits a one-page drawing and a hydraulic calculation copied from a similar restaurant, plus no county permit. The county inspector asks for the state license number, the permit, the hydraulic calculation, and a material test report before allowing the rough-in inspection. The contractor argues that the fitter certification and insurance should be enough to proceed.
1. What licensing and permitting deficiencies must be resolved before the contractor may proceed?
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The company's Maryland fire sprinkler contractor license is expired, so the contractor is not authorized to perform or offer the work until it is renewed. A fitter certification held by the foreman is an individual credential; it does not substitute for the company license. Current insurance is necessary but not sufficient.
The county permit is also missing. The contractor must renew the state license, provide the valid license number, obtain the local permit, and schedule inspections. The inspector should not allow rough-in work to proceed on the basis of insurance and a fitter certificate alone. Any work performed under the expired license may require separate correction or enforcement action.
2. What plan-review documents should be required for this tenant fit-out?
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The submittal should include project-specific shop drawings showing the riser, mains, branch lines, sprinkler spacing, and coverage; a hydraulic calculation for the actual restaurant hazard and water supply; a current water flow test; manufacturer's data sheets for sprinklers, valves, and devices; a material list; and the permit application with the owner's authorization.
The drawings must show the new hood, cooking area, storage, and any occupancy changes that affect hazard classification. The reviewer should also verify that the existing 2 in riser and 6 in main are adequate for the new demand, and that the design complies with NFPA 13 and the edition adopted in Maryland. A material test report can be required for the piping and fittings, but it does not replace the design submittal.
3. Can the contractor use the hydraulic calculation from a similar restaurant? Explain.
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No. A hydraulic calculation is project-specific. It must reflect the actual pipe lengths, diameters, elevations, fittings, sprinkler spacing, K-factors, occupancy hazard, remote area, hose allowance, and the water supply at this building. A similar restaurant may have different ceiling heights, hood arrangements, storage, and underground mains.
Using a copied calculation would prevent the reviewer from confirming that the demand point is supported by the actual supply curve. The contractor must submit a calculation that matches the proposed layout and the current flow test. If the existing 2 in riser or 6 in main is undersized, the calculation will show it and the design must be revised.