OBC Plumbing All Buildings case studies
OBC Plumbing All Buildings · Put your knowledge to work in context.
The Ontario Building Code plumbing examination under the "All Buildings" classification is a provincial qualification exam for people who design, review, or inspect plumbing systems across every building type covered by the Code. It is intended for building officials, designers, contractors, and consultants who need to demonstrate code competency to a municipality or the province, and it tests whether you can apply the plumbing provisions of the Building Code rather than simply recall them. The OBC Plumbing All Buildings case studies are 5 cases and about 2,965 words.
1Stack Vent Offset Below the Highest Fixture
A four-storey office building is being converted from storage to washrooms. The existing 100 mm (4 in.) soil stack runs vertically through a chase and is offset 1.5 m horizontally at the third-floor ceiling to clear a new structural beam, then continues to the roof.
666 words, about 3 min2Grease Interceptor Sizing for a Restaurant Tenant
A restaurant tenant is being built out in a mixed-use building. The kitchen has a three-compartment sink (each compartment 500 mm x 500 mm x 400 mm deep), one pre-rinse spray sink, two hand sinks, and a floor drain in front of the cooking line.
605 words, about 3 min3Vent Terminal Too Close to a Roof Terrace
A residential building has a roof terrace used by occupants, with a guardrail and planters. Several 50 mm (2 in.) vent stacks terminate on the roof.
582 words, about 3 min4Existing Building Drain Slope and a New Water Closet
A tenant fit-out adds a new water closet and lavatory in a former office suite. The nearest connection is an existing 100 mm (4 in.) cast-iron building drain running under a concrete slab.
557 words, about 3 min5Water Service Pressure at the Top Floor
A six-storey building has a direct water service from the street main. The static pressure at the street is 480 kPa (about 70 psi).
555 words, about 3 min