Roof Runoff Structure Design (NRCS Standard 558)

Every gutter design needs to solve 2 problems - open channel flow in the gutter and orifice flow at the downspouts. We'll discuss general layout and then walk through a spreadsheet to do the calcs.

This lecture goes through some of the design issues that we'll face in roof gutter design. Be sure to check out the NRCS standard drawing for more specifications and notes.

Time to use what you've learned, and cover some spots that we glossed over in the lectures! Watch the lecture, then download the exercise worksheets. 1 possible solution is also posted to help check your work.

Students will learn how to take the hydrology learned previously and apply it to drip trenches.

Drip trenches are simpler than gutters, but have some specific design issues we need to cover.

A quick exercise to make sure you understand the principles of drip trench design.

Here's a simple design problem for you to work through with the spreadsheets that have been covered.

If you're taking this course to earn Conservation Approval Authority in NY, you'll need to send me a course packet showing all you did for the project. If you're not taking the course for credit, you can still send me your work and I will provide comments.

Here's a quick overview of 3 additional gutter design references, 2 of which are included here. The third is available online only at:

http://extension.missouri.edu/p/WQ322