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#### Rational Method Hydrologic Calculations with Excel.pdf

**Rational Method** Hydrologic **Calculations** with Excel Harlan H. Bengtson, PhD, P.E. COURSE CONTENT 1. Introduction **Calculation** of peak storm water **runoff** rate from ... Down

#### CHAPTER 5 Computing Stormwater Runoff Rates and.pdf

C = **Rational Method** **runoff coefficient** I = rainfall intensity (inches per hour) A = drainage area (acres) D = storm duration (hours) ... Down

#### The Modified Rational Method - NJCDEA.pdf

**Rational Method** Equation: Based upon the **Rational Method** Equation: Q = C x I x A x APF Where: Q = The Quantity Flow Rate in CFS C = Dimensionless **Runoff Coefficient** ... Down

#### The Modified Rational Method - NJCDEA

njscdea.ncdea.org/The%20Modified%20Rational%20Method.pdf**Rational Method**Equation: Based upon the**Rational Method**Equation: Q = C x I x A x APF Where: Q = The Quantity Flow Rate in CFS C = Dimensionless**Runoff Coefficient**#### Estimating Storm Water Runoff - PDHonline.org

Chapter 3 - Estimating Stormwater

www.pdhonline.org/courses/h119/stormwater%20runoff.pdf**Runoff**3.5**RATIONAL METHOD**The**R ational**For mula is the most commonl y used**method**of deter mining peak discharges#### TxDOT PROJECT 0-6070: USE OF THE RATIONAL AND …

TxDOT PROJECT 0-6070: USE OF THE

tti.tamu.edu/conferences/tsc11/program/presentations/struct...**RATIONAL**AND MODIFIED**RATIONAL METHOD**FOR HYDRAULIC DESIGN Presentation by: Matthew Wingfield P.E., CFM . …#### 3.2.2 Rational Method - CECALC.com

3-5 3.2.2

www.cecalc.com/DAs/Hydrology/DA2.pdf**Rational Method**One of the most commonly used equations for the**calculation**of peak flow from small areas is the**Rational**formula, given as: