ICC F24 Master Plumber Exam (2015 IPC)

The building drain is the lowest piping receiving discharge from soil, waste and other drainage pipes inside the building and extends 30 inches in developed length beyond the exterior walls, where the building sewer begins.

A horizontal pipe or fitting makes an angle of less than 45 degrees with a horizontal plane, while a vertical pipe makes an angle of 45 degrees or more with the horizontal.

Pollution is an impairment of potable water quality that adversely and unreasonably affects aesthetic qualities without creating a health hazard, while contamination creates an actual hazard to public health through poisoning or spread of disease.

A stack vent is the extension of a soil or waste stack above the highest horizontal drain connected to that stack, while a vent stack is a vertical vent pipe installed primarily to provide air circulation to and from the drainage system.

A conductor is the pipe inside the building conveying storm water from the roof to a storm or combined building drain, while a leader is the exterior pipe conveying storm water from roof or gutter drains to an approved means of disposal.

An appurtenance (e.g., a water-distribution manifold) is an adjunct to the piping system that demands no additional water supply and adds no discharge load, while a plumbing appliance depends on energized components and a plumbing fixture receives water or discharges waste.

Devices and equipment such as process tanks, filters, drips and boilers discharging nonpotable water are permitted to discharge through an indirect waste pipe by air break or air gap, while potable clear-water waste, swimming pool waste and food-handling equipment require an air gap (each well of a multiple-compartment food sink discharging independently to the receptor).

An application on file is deemed abandoned 180 days after filing unless it has been pursued in good faith or a permit has been issued; the code official may grant one or more extensions for additional periods not exceeding 180 days each when requested in writing with justifiable cause; an issued permit may be extended for a period not exceeding 180 days for reasonable cause and shall not be extended more than once (extension fee is one-half the new permit fee).

The drainage and vent system is tested with a 10-foot head of water held not less than 15 minutes (plastic piping shall not be air tested; a 5 psi air test applies only to nonplastic DWV piping), while the water supply system is tested at not less than the working pressure with water or, for nonplastic piping, 50 psi of air held not less than 15 minutes.

Essentially nontoxic transfer fluids have a Gosselin rating of 1 (propylene glycol, mineral oil, polydimethylsiloxane, certain refrigerants, FDA-approved boiler water additives), while essentially toxic transfer fluids have a Gosselin rating of 2 or more (ethylene glycol, hydrocarbon oils, ammonia refrigerants).

Section 1003.3.5 requires ready access to automatic grease removal devices for inspection and maintenance, while Section 1003.10 requires only access to each interceptor and separator for service and maintenance.

An automatic grease removal device is sized to pretreat the measured or calculated flows for all connected fixtures or equipment, while a gravity grease interceptor capacity is peak drain flow in gpm multiplied by a 30-minute retention time.

Alternate on-site nonpotable water is nonpotable water from other than public utilities, on-site surface sources and subsurface natural freshwater sources (examples: gray water, on-site reclaimed water, collected rainwater, captured condensate, rejected water from reverse osmosis), so pond water, freshwater wells and utility-supplied reclaimed water are excluded.

The application for appeal must be filed on a form from the code official within 20 days after the notice was served, while the board must meet upon notice from the chairman within 10 days of the filing of the appeal.