Rational Method Runoff Calculator

Calculate peak stormwater runoff rate using the rational method Q = CiA for small urban and agricultural catchment drainage design.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How It Works

Calculate peak stormwater runoff rate using the rational method Q = CiA for small urban and agricultural catchment drainage design

Each component has a specific meaning:

  • Rational method Q = CiA — The rational method q = cia recorded for the patient or scenario being assessed.

Note: Interpret the rational method runoff result against the clinical thresholds and context described above.

How to Use

Enter the rational method Q = CiA for the patient or scenario you are assessing. Calculate peak stormwater runoff rate using the rational method Q = CiA for small urban and agricultural catchment drainage design. Use the rational method runoff result to inform your clinical assessment.

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Frequently Asked Questions