MASTER PLUMBER EXAM: DEFINITION OF TERMS QUESTIONS WITH COMPLETE SOLUTIONS

ADS correct answer: Acrylonitrile-Butadiene•Styrene ALLEY correct answer: any public space. public park or thoroughfare less than three (3) meters but not less than two (2) meters in width dedicated or deeded for public use. ALTER or ALTERATION correct answer: any change, addition or modification ACCESSIBLE correct answer: when applied to a fixture, connection, appliance or equipment, shalt mean having access thereto, but which may require prior removal of an access panel, door or similar obstruction. "Readily accessible" shall mean direct access without the necessity of removing any panel, door or similar obstruction. AIRBREAK correct answer: a physical separation. which may be a low inlet into the indirect waste receptor from the fixture, appliance or device indirectly connected. AIR GAP, DRAINAGE correct answer: the unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe, plumbing fixture, appliance or appurtenance conveying waste to the flood level rim of the receptor. AIR GAP, WATER DISTRIBUTION correct answer: an unobstructed vertical distance through the free atmosphere between the lowest opening from any pipe or faucet conveying potable water to the flood-level rim of any tank, vat or fixture. APPROVED correct answer: accepted or acceptable under an applicable specifications or standard stated or cited in this Code., or accepted as suitable for any proposed use under procedures and powers of the Administrative Authority. APPROVED TESTING AGENCY correct answer: an organization primarily established for purposes of testing to approve standards and approved by the Administrative Authority. AUTHORITY, ADMINISTRATIVE correct answer: The Administrative Authority including the Building Official, the Commission, the Board and such other department or agency established and authorized to administer and enforce the provisions of Republic Act 13 78 BACKFLOW correct answer: the flow of water or other liquids, mixtures or substances into the distributing pipes of a potable supply of water from any source other than from its intended source. BACKFLOW CONNECTION correct answer: condition or any arrangement whereby reverse flow can occur. BACKPRESSURE BACKFLOW correct answer: occurs due to an increased reverse pressure above the supply pressure. This may be due to pumps, boilers, gravity or other sources of pressure BACKFLOW PREVENTER correct answer: device or means to prevent flow of liquid from returning to the source of supply. Also called vacuum breaker BACK-SIPHONAGE correct answer: the flowing back of used, contaminated or • polluted water from a plumbing fixture or vessel into a water supply pipe due to a negative pressure in such pipe. See backflow. BACKWATER VALVE correct answer: a device installed in a drainage system to prevent reverse flow. BACK VENT PIPE correct answer: the part of a vent line, which connects directly with an individual trap underneath or behind the fixture and extends to the branch or main vent pipe at any point higher than the fixture or fixture traps it serves. This is sometimes called an individual vent. BALL COCK correct answer: a valve opened and closed by the fall and rise, respective! y, of an attached ball floating on the surface of the liquid BALL JOINT correct answer: a type of pipe connection in which a ball-shaped end is held in a cup like shell and allows movements in every direction. BATTERY OF FIXTURES correct answer: any of two or more