ICC M3 case studies
ICC M3 · Put your knowledge to work in context.
The ICC Mechanical Plans Examiner (M3) certification is a professional credential offered by the International Code Council for individuals who review mechanical construction documents for code compliance. It is intended for plans examiners, code officials, inspectors, and design professionals who evaluate heating, cooling, ventilation, exhaust, duct, combustion air, chimney, vent, and refrigeration provisions on submitted plans. The ICC M3 case studies are 5 cases and about 2,624 words.
1Rooftop Unit Replacement Without Permit Drawings
A property manager wants to swap a 12-year-old, 8-ton packaged rooftop unit serving a small office building with a new unit of the same nominal capacity. The mechanical contractor submits for a permit with only a one-line equipment schedule and a manufacturer cut sheet.
510 words, about 3 min2Restaurant Kitchen Makeup Air and Hood Capture
A new 60-seat restaurant installs a Type I hood over a gas-fired charbroiler and fryer bank. The hood exhaust is rated 3,000 cfm.
547 words, about 3 min3Dryer Exhaust Through a Long Concealed Run
A laundromat tenant fit-out installs six commercial clothes dryers along an interior wall. The contractor routes a single combined exhaust duct from a manifold above the dryers across the ceiling, through two 90-degree elbows, and out a sidewall.
532 words, about 3 min4Combustion Air for a Confined Mechanical Room
A contractor installs a 120,000 Btu/h natural gas furnace and a 40,000 Btu/h natural gas water heater in a dedicated mechanical closet measuring 6 ft by 8 ft by 8 ft with a tight-fitting, weatherstripped door and no louvers. The closet is on an interior wall of a conditioned basement.
516 words, about 3 min5Venting a Category IV Boiler Into an Existing Masonry Chimney
A contractor replaces an atmospheric gas boiler with a new condensing (Category IV) boiler rated 150,000 Btu/h. Rather than install a new PVC vent, the contractor connects the new boiler's flue to an existing interior masonry chimney that previously served the old boiler.
519 words, about 3 min