How To Calculate Drainage Systems for Secondary Roads

In this article you will be able to calculate as an Hydraulic Engineer does, the drains that secondary, or mainly rural locally maintained, roads must have. The first thing to do is calculate the maximum flow, an then the drainage area we need. You'll start by selecting a method - usually the Rational Method or SCS (the Soil Conservation System). An important concept is to limit the maximum flow rate to rates safe for concrete piping. All the information you need is here.