PPolySim OS
For First Responders · Fireground Hydraulics

Fireground Hydraulics for a coastal erosion

Built for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field. Simulate a coastal erosion live below — adjust the inputs and watch it respond, right in your browser.

Fire Hose HydraulicsLive
Required pump discharge pressure
125psi
100
nozzle
25
friction
0
elevation

Controls

Hose diameter

Presets

Friction loss uses the fireground formula FL = C·(Q/100)²·(L/100), added to nozzle pressure and elevation head to give the required pump discharge pressure. Coefficients are standard single-line values. Verify against your department's charts.

▶ Run in Python

Data Inspector

Friction loss25 psi
Elevation0 psi
Coefficient C2

Governing equation

Reading this result: Friction loss is modest here, so nozzle pressure sets most of the 125-psi discharge the pump must supply.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Frequently asked questions

Is this good for first responders?
Yes — this version of "Fireground Hydraulics for a coastal erosion" is framed for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.