Explain the Rational method of peak runoff estimation. Write its assum

Question

Explain the Rational method of peak runoff estimation. Write its assumptions.

05 Mar 2024

Answer :

Word Count : 439

The Rational Method is a widely used empirical method for estimating peak runoff rates from small urban and suburban drainage areas. It was developed in the 19th century and is still widely used for designing storm drainage systems, culverts, and other hydraulic structures due to its simplicity and ease of use. The Rational Method is based on the assumption that the peak runoff rate from a drainage area is directly proportional to the rainfall intensity for a given storm duration and the drainage area.

The Rational Method equation is given as:

Q = C × I × A

Where:
Q = Peak runoff rate (cubic feet per second ______ ___ _______ _______ _______ ________ ______ ___ _____.
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