Just a little something for you die hard fire hounds out there like myself. How about some equations on how you figure rated fire flow for a structure in your districts or whatever your apart of???
For intance ours is Length X Width
Now for us this gets you a 100% involvement and in the case only a 1/4% is involved we multiple the number of 100% you come up with on the above equation by .25 or so on with how ever much is being eaten and that gives us a pretty close figure of how many lines we need on the ground to supply the wet stuff on the hot stuff, make since?
In layman's terms or whatever terms you use lets say the fire is calling for 800 gpm for fire suppression (You know put the wet stuff on the hot stuff and your useing 2-1/2" hose and 2-1/2" adjustable gallonage nozzles which most nozzles and not all are capable of 250 gpm and not exlude friction loss of lets say we have 200' (foot) down on the ground per connection of 2-1/2" hose, with that being said approximately 10 psi per a 100' of hose of friction loss then we would need how many lines on the ground to handle this fire????
The answeer is approximately Four (4) preconnects of 200' of 2-1/2" hose with a nozzle capable of 250gpm on each preconnect with one heck of a water load feeding that truck....
Now this is just a short version we use and is very quick with that handy-dandy cell phone everyone has in there pocket that has a calculator in the tools part...
Now its your turn to give everyone food for thought and lets learn something new today!!!!!!