Rational & Modified Rational Methods Explained (Ep. 2/2) | Worked Examples

This is the second episode in a two-part series on the Rational Method and Modified Rational Method used in hydrology and drainage design. In the first episode, we covered the theory, applications, strengths, and limitations of these methods. In this episode, the focus is entirely on problem-solving. This hands-on tutorial walks through three worked examples, including an application of the Modified Rational Method in Excel to determine the critical storm duration for a detention basin. Each example is solved step by step, with emphasis on correct assumptions, parameter selection, and interpretation of results. Also watch the first episode of this two-part series: Rational & Modified Rational Methods Explained (Ep. 1/2) | Concepts, Assumptions, & Best Practices    • Rational & Modified Rational Methods Expla...   This video is ideal for: • Civil and water engineering students • Practising engineers • Exam preparation and design verification • Anyone using the Rational or Modified Rational Method in practice ________________________________________ ⏱️ Timestamps 00:00 – Introduction and problem-solving approach 00:20 – Example 1: Rational Method peak flow calculation (includes calculating and adjusting runoff coefficient for 100-yr ARI event) 02:35 – Example 2: Rational Method for basins with sub-catchments 04:18 – Example 3: Modified Rational Method for detention basin design 06:00 – Finding critical storm duration in Excel 12:07 – Key takeaways and closing remarks 🔑 Keywords #rationalmethod #modifiedrationalmethod #stormwatermanagement #hydrology #hydrologicalmodelling #drainagedesign #hydrologytutorial #criticalstormduration #civilengineering #peakflow #floodmodelling #floodestimation #ARRguidelines #detentionbasin #urbandrainage #urbanhydrology