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
C = Rational Method runoff coefficient I = rainfall intensity (inches per hour) A = drainage area (acres) D = storm duration (hours) ... Down
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
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 Coefficientnjscdea.ncdea.org/The%20Modified%20Rational%20Method.pdf
Chapter 3 - Estimating Stormwater Runoff 3.5 RATIONAL METHOD The R ational For mula is the most commonl y used method of deter mining peak dischargeswww.pdhonline.org/courses/h119/stormwater%20runoff.pdf
TxDOT PROJECT 0-6070: USE OF THE RATIONAL AND MODIFIED RATIONAL METHOD FOR HYDRAULIC DESIGN Presentation by: Matthew Wingfield P.E., CFM . …tti.tamu.edu/conferences/tsc11/program/presentations/struct...
3-5 3.2.2 Rational Method One of the most commonly used equations for the calculation of peak flow from small areas is the Rational formula, given as:www.cecalc.com/DAs/Hydrology/DA2.pdf