ICC P3 case studies
ICC P3 · Put your knowledge to work in context.
The ICC Plumbing Plans Examiner (P3) is one of the professional credentialing examinations offered by the International Code Council, the organization behind the International Codes. It is aimed at code officials, plan reviewers, and design professionals who review plumbing construction documents for compliance with the plumbing provisions of the adopted codes, rather than at installers in the field. The ICC P3 case studies are 5 cases and about 4,003 words.
1Coffee Shop Tenant Improvement: What Must Be on the Plans Before You Issue the Permit
A permit application for a 2,400-square-foot coffee shop tenant improvement in a strip mall arrives with three sheets: a floor plan, a single-line plumbing riser, and a water heater cut sheet. The plan shows a hand sink, a prep sink, a three-compartment sink, a mop sink in a closet, two single-occupant restrooms, and one floor drain.
799 words, about 4 min2Break Room and Second Toilet Room: Fixtures, Trap Arms, and Backflow
A 26-person office tenant improvement converts a storage room into a break room and adds a second single-occupant toilet room. The plan shows: an 18-by-20-inch bar sink with a 1½-inch trap and 14 feet of 1½-inch trap arm running to an existing 2-inch stack; a dishwasher whose drain hose discharges into the bar sink through an air gap fitting; a coffee brewer with a ⅜-inch supply hard-piped to the building water; and a new toilet room with a 1.28 gpf water closet and a lavatory, vented by a ¾-inch air admittance valve installed inside the wall cavity.
788 words, about 4 min3Second-Floor Water Heater: Relief Discharge, Thermal Expansion, and the Damp Pan
A 12-unit apartment building installs a 100-gallon, 199,000 Btu/h gas-fired storage water heater in a second-floor mechanical closet. The plans show a 150 psi/210°F temperature and pressure relief valve with a ¾-inch CPVC discharge pipe, trapped, ending 6 inches above the closet floor; a 1-inch-deep drain pan with a ½-inch drain running 20 feet to a floor drain in the adjacent corridor; and no expansion tank.
801 words, about 4 min4Three-Story Office: Verifying Residual Pressure at the Top-Floor Flushometer
A three-story office building is served by a 2-inch water service from a 70 psi main. The drawings show a 2-inch meter with an 8 psi loss at the design flow of 45 gpm, a 60 psi pressure-reducing valve downstream of the meter, and a 1½-inch copper riser.
759 words, about 4 min5Restaurant Gas Manifold: Connectors, Sediment Traps, and Regulator Venting
A restaurant gas plan shows a 2 psi service entering the building, a line regulator at the kitchen wall reducing to 7 inches w.c., and a black steel manifold feeding a 90,000 Btu range, a 60,000 Btu fryer, two 40,000 Btu ovens, and an 80,000 Btu water heater, for 310,000 Btu/h connected load. Each appliance has a ½-inch corrugated stainless steel connector.
856 words, about 4 min