How Is Church Fellowship Hall Commercial-Kitchen MEP Designed?

The hood decision follows the equipment. Fryers, griddles, ranges, broilers, and woks produce grease-laden vapors and fall under a Type I hood per the mechanical code, which brings requirements for listed fire suppression, welded grease-tight ductwork, clearances to combustibles, and exhaust rates matched to the appliance duty. Steamers, dishwashers, and enclosed ovens that produce heat and moisture but not grease can be served by a Type II hood. If any single appliance under a hood requires Type I, the whole hood is Type I, so mixing equipment types under one hood is designed carefully or avoided. Grease duct is a system, not just a pipe. The duct runs from the hood to the roof exhaust fan as continuous welded steel with liquid-tight seams, pitched to drain grease back toward the hood's collection, with cleanout access at every change of direction. Clearances to combustible construction are maintained or the duct is enclosed in a rated shaft. Makeup air completes the system: roughly 80 to 90 percent of the exhaust volume is replaced directly at the kitchen with tempered air, interlocked so the exhaust cannot run without it. The engineer also verifies the building envelope can tolerate the pressure regime, because a starved hood spills cooking effluent into the dining hall.

The plumbing design starts at the floor. Cooking equipment sits over floor sinks or trapped floor drains, food-prep sinks get indirect waste connections with air gaps, and everything carrying grease passes through a grease interceptor, hydromechanical or gravity, sized to the code's fixture-based method before joining the sanitary line. A three-compartment sink, prep sink, handwash sinks at the required locations, and a mop sink round out the fixtures, with the water heater sized for simultaneous dishwashing and handwash peaks. Backflow prevention protects the potable supply wherever hoses or submerged inlets create cross-connection risk. Gas and electrical are sized from the equipment schedule. The gas engineer totals the input ratings of every appliance, sizes the piping for the developed length with diversity where the code allows, and provides accessible shutoffs, sediment traps, and seismic restraints. Electrical brings a dedicated branch circuit per major appliance, correctly sized disconnects, GFCI and AFCI protection where required, and a panel schedule with spare capacity for the inevitable donated freezer. Lighting serves two masters: bright, cleanable task lighting over prep areas and dimmable event lighting for the hall, often on separate controls. The health department reviews finishes, handwash placement, and food-flow layout in parallel with the building department's MEP review.