Firefighter Calcs 

The Firefighter Calcs app is now available in iTunes and Google Play. Demo Video  with audio, 4:20Demo Video  no audio, 2:23

Hose page 

ParametersThe top section of the page shows all the parameters that go in to the calculation of the pressure drop. These can be edited by touching anywhere in the section. The "Line"The icons of a fire engine, hose, wyes, standpipes and nozzles comprise the "Line". Slide this left and right to see more of the line and touch line items to see the pressure drop across it. To remove an item from the line just drag it away from the line. In Loss OutThe pressure labelled "In" is the pressure at the inlet of the hose. This is the same value as the "Out" pressure of the item to the left. The pressure labelled "Loss" is the pressure loss for this hose. To see how this was calculated tap on this value. The pressure labelled "Out" will be the "In" for the next item to the right. FooterThe footer contains all the elements that can be added to the line. The Wye fitting is the only item that cannot be duplicated in the line. If it is disabled that means a Wye already exists in the line. 

Hose Pressure Drop page 

ParametersThe top section of the page shows an abbreviated version of all the parameters that go in to the calculation of the pressure drop. VariablesThis section lists all the variables that will be used in the formulas as well as their values. Friction LossThis shows the formula for calculating Friction Loss as well as the variables used. Elevation PressureThis shows the formula for calculating Elevation Pressure as well as the variables used. Total Pressure DropThis shows the formula for calculating the total pressure drop. 

Hose Coefficients 

Hose CoefficientsA powerful feature of Firefighter Calcs is the ability to configure custom hose coefficients. The coefficients values are defaulted to the standard coefficients but may be edited to reflect your own hose coefficients. 