How did you figure the equations on your cheat sheet? Always been interested in making one but wanted to see what other depts had used.
Brother Colin, we too use a laminated friction loss chart. It is set by nozzle type with constant psi settings, any appliances with constants (psi), it has the various hose diameter combinations for supply line and FL for common gpm rates per 100' ft of hose. it has the pre set flow rates for 200' lengths of attack line both 1 3/4 and 2 1/2, based off of manufactures recommedation for maximum flow for the nozzles we use (LP TFT). Additionally, it has elevation, stand pipe and sprinkler connection constants. If you give me your email I will get an e copy and send it to you. Be safe