It is a diagram that shows water risers risers
Plumbing
An electrical riser diagram (also known as a "one-line" diagram) is a drawing that shows how an electrical system is designed by diagramming how the different components are connected. It is the roadmap which electricians use as the directions to how the system is put together. You can learn more about them here.
plumbing diagram of double bowl sink with disposal
In plumbing we use BOTH right and left handed threads depeng on the useage Toilet handles for example are left handed threads threaded rod used for clevis hangers and riser clamps are right handed threads
Riser
A riser that has a curved shape at front.
LPX or mini LPX uses a riser card ( also called a bus riser or daughter card). LPX motherboard has the riser card near the center, whereas the NLX motherboard has the riser at the edge of the board.
Ronn Riser was born in 1962, in USA.
trade and riser are the terms used for stair case. trade is used for the breadth of and riser is used for height of stairs.
See the related link. I'm not able to post is as part of the answer because it's against policy here. But that's what you are looking for. Just be sure to check plumbing code in your area to make sure that the diagram is proper.
Neil Riser was born on 1962-04-25.