Domestic Water Distribution Systems

In a fixture rough-in, the dimensions are taken from the

• finished wall surface

• main stack

• fixture drain

• finished floor surface

Hose bibbs are usually

• 1 inch

• 3/4 inch

• 1/2 inch

• 1/4 inch

WSFUs measure a fixture's

• capacity

• load

• velocity

• volume

The piping route in most water supply systems is determined by

• the least amount of pipe and fittings required to ensure proper flow to all fixtures in the system

• the highest pressure that can be provided to the fixture that is farthest from the supply inlet to the building

• the height of the building and the number of fixtures to be installed

• the type of piping materials used

What is the primary function of a water meter in a water supply system?

• To measure the volume of water used

• To control the flow of water

• To filter the water

• To heat the water

What is the standard size of a water closet supply?

• 1/2 inch

• 3/4 inch

• 1 inch

• 1/4 inch

What is the main purpose of a vent pipe in a plumbing system?

• To drain water

• To supply water

• To allow air into the system

• To prevent backflow of water