Plans, Permits, and Submittal Review
Submittal package
A complete NFPA 13 submittal includes hydraulic calculations, shop drawings to scale, a material list, sprinkler cut sheets, hanger and seismic details, and the hazard classification. Drawings show ceiling heights, obstructions, pipe sizes, sprinkler locations and spacing, remote area, and the location of control valves, drains, and test connections.
Review sequence
- Confirm the occupancy and hazard class.
- Check the density/area point and remote-area shape.
- Verify sprinkler coverage, spacing, and obstruction rules.
- Check pipe sizing and hydraulic calculation.
- Coordinate standpipes, fire pump, underground main, and fire department connection.
- Confirm permits and approvals before installation.
Worked example
A reviewer receives a 1,500-ft² OH2 remote area at 0.20 gpm/ft². The drawing claims 300 gpm sprinkler demand but omits the 250 gpm hose allowance, and shows 15 ft spacing on 130-ft² coverage. The spacing is within the ordinary-hazard maximum, but the hydraulic demand is understated by 250 gpm. The submittal is returned for correction.
Traps
Stamped drawings from an unlicensed designer; missing hydraulic calc; deferred submittals for structural or seismic details; and plan sets that do not match the approved underground main.