Water supply pipeline -J, if divided into high and low areas, is usually represented by the initial letter, that is, high area -G and low area-d.
Drain pipe -W, which means sewage. And -F, it's wastewater. Rarely use-p.
Fire hydrant pipe -XH.
Automatic sprinkler -Z or -ZP.
Rainwater pipe-y.
Heating pipe -R, generally the solid line indicates the water supply pipe, and the dotted line indicates the return pipe.
Pressure drainage.
Condensing water pipe -n
Riser -l
In addition, the model letter of the equipment: Q- flow or air volume H- lift N- power P- pressure QW- submersible sewage pump and other valves and appliances are distinguished by graphics.
JL- water supply pipeline; WL- sewage pipe; YL- rainwater pipe; RJL- hot water supply; RHL- hot backwater.
Extended data:
First of all, it is not difficult to know the location of the civil wall. You can see that the drawing is facing the building in the same direction as the building.
The second is to memorize legends. ?
1, the hot water port is on the left. ?
2. The cold water port is on the right. ?
There is a hot water pipe on it. ?
4. Below is the cold water pipe. ?
These four articles are the unified norms of water supply in China. Water pipes must also be installed in the water supply system
Water supply and drainage drawings in building hydropower drawings are actually more complicated than electrical drawings, involving more legends. If you want to understand any architectural drawing, you must first look at the legend.