Sanitation, Plumbing Design and Installation (Part 10) | Master Plumber Licensure Exam Refresher

A 'street elbow' is an elbow with a male thread on one end and a female thread on the other end. The video then discusses gases in septic tanks: 'hydrogen' evolves as a moist gas from organic waste, 'hydrogen sulfide' is colorless with an offensive odor, and 'sulfur dioxide' is colorless with an irritating odor.

The video starts with a question about which type of pipe should not be buried underground. It also identifies a 'coupling' as a fitting to join two straight lengths of pipe and states that galvanized iron pipe quality is rated by 'schedule'.

Gray water that enters a collection reservoir must be filtered. Water heaters, hose bibs, and sillcocks are typically protected from backflow with a 'vacuum breaker'. Gray water itself originates from sinks, showers, and bathtubs.

A 'three-quarter bath' means a water closet, lavatory, and a bathtub or shower located together on the same floor level. A 'local vent' is a pipe or shaft that conveys foul air from a plumbing fixture or a room to the outer air. A 'dry vent' is a vent that does not carry liquid or waste.

A 'pendant' type of sprinkler head is typically used with ceilings that have a temperature of 155°F. The 'trap seal' is defined as the maximum vertical depth of liquid a trap retains, measured between the crown wear and the top of the trap's dip.

'Aerobic bacteria' require oxygen for their action in sewage decomposition. The distance between cleanouts in horizontal waste and soil pipelines should not exceed 50 feet. 'DWV' in plumbing drainage installation stands for 'drainage waste vent'.

An 'aquifer' is an underground soil formation containing sufficient saturated permeable material to yield significant quantities of water. The 'spigot' is the end of a cast iron pipe that fits into a bell or hub.