How much pressure is lost when a fire hose is at the top of a long 100 meter ladder? If it comes out of the hose at 63 bar (at street level) how much pressure is lost by raising it 100 meters?
I'm confused about a few things: in a sealed container the pressure is the same everywhere - up down left right - in a hose (when the tap is ON but the nozzle is OFF (water (pressure) builds up in the hose but no water appears) when I twist the nozzle ON, water bursts out generally at a constant pressure. It doesn't matter where I am in the garden it's consistent - but what happens if I raise the hose - does the pressure drop? Or is the pressure maintained because it is a (nearly) sealed container?
I found this Fire apparatus - Wikipedia, the free encyclopedia
Telescopic aerial platforms can reach heights of over 328 feet (over 100 meters). However, most of them are designed to reach the height of approx. 100 feet (33 meters)
Firehose - Wikipedia, the free encyclopedia
The usual working pressure of a firehose can vary between 8 bar and 20 bar ((0.8 to 2.0 MPa), while its bursting pressure can be up to 63 bar (6.3 MPa). (This level of pressure emitted by the hose can actually break in a weaker brick wall.)
Thank you
John