Journeyman Plumbing Test Study Guide 2024 Questions and Answers with Verified Solutions

more restrictive provisions apply - where conflicts occur between code and manufacture instructions.

what shall be 3rd party certified as conforming to NSF 14 - all plastic pipe, fittings and components.

all strainer plates on drain inlets shall be designed and installed so that all openings are..? - not greater than 1/2 inch (12.7) in least dimension.

pipes through foundation walls need..? - a relieving arch or a pipe sleeve which is 2 pipe sized bigger.

waterproofing joints at the roof and around vent pipes shall be made water tight by use of....? - lead, copper, steel, aluminum, plastic, or approved flashing/flashing material.

exterior wall opening must be made...? - water tight.

T or F: buried piping needs to be supported throughout it entire length. - True

When backfilling the trench, that was over excavated - backfill up to installation level of bottom of pipe w/sand or gravel in layers no more than 6" in depth and compacted after each placement.

when a rock is encountered trenching - removed to not less than 3 inches below installation level. backfill with tamped sand.

when backfilling pipe systems crown of the pipe must be covered by...? - 12 inches of tamped earth.

T or F: truss members and components may be cut, drilled, notched or spliced. - false. unless they obtain approval from a design professional.

hanger spacing: steel pipe - every 12 ft horizontal 15 vertical

where hot water piping is bundled w/cold or hot water piping... - each hot water pipe shall be insulated.

pipe sizes great than 4 inch need restraints for drain pipes at.. - all changes in direction and changes in diameter greater that 2 pipe sizes.

testing gauge required for 10 psi or less? - has increments of .10psi or less.

testing gauge required for >10 psi up to 100 psi - increments of 1 psi

testing gauge required for greater than 100 psi - increments of 2 psi

tests shall last not less than..? - 15 minutes

2 ways you can test a drainage system. - in its entirety or in sections.

if testing entire drainage system, all openings in piping shall be tightly closed except..? - the highest opening, and system shall be filled to point of overflowing.

if drainage system is tested in sections, no section shall be tested with less than..? - a 10 foot head of water.

T or F: plastic piping shall not be tested using air. - true.

when testing drainage system w/air, force air into system until there is... - a uniform pressure of 5 psi or sufficient to balance a 10 inch colum of mercury. (no air test on plastic piping )

drainage and vent final test shall be... - visual (smoke)

gravity sewer test consists of plugging building sewer at point of connection w/ public sewer, filling building sewer with water testing with not less than... - 10 foot head of water. maintain for 15 minutes.

shower liner test. fill with water not less than... - 2 inches measured at threshold.

hanger spacing: lead pipe - continuous horizontal, 4 feet vertical

liquid combustion byproducts of condensing appliances shall be collected and discharged to... - an approved plumbing fixture or disposal area in accordance with manufacturer's instructions.

appliances containing evaporator or cooling coils must be provided with... - condensate drain systems.

condensate disposal piping shall maintain a horizontal slope in the direction of discharge not less than - 1/8 unit vertical in 12 units horizontal (1 percent slope)

sheet copper for general applications shall not weigh less than... - 12 oz per sq. ft.