It is a diagram that shows water risers risers
Hire a plumbing engineer.
A Dry Riser is a system of valves and pipework which enables the Fire Service to pump water on to the upper floors of a building. A Wet Riser is a system of valves and pipework which are kept permanently charged with water.
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.
"System Riser: The aboveground horizontal or vertical pipe between the water supply and the mains (cross or feed) that contains a control valve (either directly or within its supply pipe and a waterflow alarm device" 2007 NFPA 13 Standard for the Installation of Sprinkler SystemsIn short, it is the pipe that "rises" from the water supply to the ceiling. Larger buildings have multiple risers that feed different areas of the building.
Awater riser is a main vertical pipe intended to distribute water to multiple levels of a building or structure as a component of the firesuppression systems.
water pipe
There is no 'standard' for UK dry risers - except for the connection at street level, the pipe can be any diameter. A dry riser is a (usually empty) vertical pipe - which reaches all floors in a tall building. The fire brigade simply connect a hose from their pump engine - which has been connected to the nearest mains water supply. The engine provides enough pressure to force the water upwards in the dry riser - so it reaches all levels.
Are you asking hydrostatic (standing still) or if the water is under pressure such as the pressure at the base of a riser based on the height of the column of water?
no
main riser
Riser
use a demand and supply diagram to illustrate the effect of a subsidy.