Culvert Design using HY-8

Name: Culvert Design using HY-8
Rating: 4.5 (373 reviews)

A guide to designing culverts for access roads and laneways supporting agricultural conservation projects

Created byTim Clark

Last updated 3/2022

English

What you'll learn

By end of the course, you will be able to use HY-8 to design and size a roadway culvert

Course content

3 sections • 13 lectures • 55m total length

Basics, Terms, Definitions and Flow Types15:30
Covers the background information and basic vocabulary used in culvert design, technical resources, and where to download HY-8.
Reading: HDS-5 Hydraulic Design of Highway Culverts5:28:00

This is the background manual for culvert design using HY-8. Don't try to read through it all at once. Definitely check out the Glossary (p27-38), Culvert Flow (p83- 90), AOP (p127-136) and Charts & Nomographs (p221-275). Scan through the table of contents to see what else is in here, and thumb through at your convenience.
Understanding the basics
Introduction to Fish Passage (AOP)6:48
A quick introduction to why fish passage in streams is important. Many conservation projects won't require fish passage, but for the few that do this is essential! Here's the link to the NYSDEC stream crossings page mentioned in the video: http://www.dec.ny.gov/permits/49060.html
Reading: Vermont Stream Crossing Handbook14:00
Reading: HEC-26 Culvert Design for Aquatic Organism Passage3:54:00
HY-8 User Interface10:07
Describes the basic user interface dialog boxes inside HY-8, without entering any site specific data.
Exploring HY-8

Check an existing culvert16:02
Takes a simple existing culvert plan and analyzes it with HY-8. Open the handout and print out both pages - you'll want to reference them while watching the video.
Now it's your turn!1:00
Here is the first sample exercise for you to try in HY-8. Try to figure out whether the existing scenario can pass the 2 year design storm without roadway overtopping. Feel free to play with settings and try out different things as you go.

When you want to check your work, download "Lecture 8 Results.xml" below. You'll need to change the file extension from .xml to .hy8 in order to load it into HY-8. If you need help doing this, you can check out this article: http://www.mediacollege.com/microsoft/windows/extension-change.html
And now a big one!1:00
Here is a larger problem for you to work through. There are two barrels that empty into a pool downstream. Also, the peak flows are in a different format - see how HY-8 behaves using Min/Design/Max versus doing recurrence intervals. Figure out whether the culverts can pass the design flow without overtopping the road. Feel free to play with settings and try out different things as you go.

When you want to check your work, download "Lecture 9 Results.xml" below. You'll need to change the file extension from .xml to .hy8 in order to load it into HY-8. If you need help doing this, you can check out this article:http://www.mediacollege.com/microsoft/windows/extension-change.html
Section 2 Wrap-Up3:21
Just a few comments on some of the quirks in HY-8 you might have picked up on, and a humble request for comments and revisions.

Use What you've learned!1:00
Print this handout and follow the instructions on it. You'll be designing a culvert under an access road mostly from scratch using HY-8. The completed solution is in the Lecture11answers.xml file below. Remember you'll need to change the file extension back to .hy8 to read the file.
Now try a bigger one!1:00
Here's the exact same scenario, but with larger flows. Try to visualize the pipes under the access road and how much cover they will need - this is an exercise in making sure there's enough cover. Results are below, remember to change the file extension to .hy8 in order to view it.
Section 3 Wrap-Up and lessons from the field4:03
This lesson wraps up the culvert design series and briefly touches on a couple notable topics such as outlet protection and pipe cover.

Requirements

A windows PC, with administrative rights to install HY-8
A letter size printer for the class exercises

Description

This course will guide you through using HY-8 to analyze culverts. You'll watch short demonstration videos and then apply what you've learned to class exercises, and then check you work. Focus is on applying the software to real problems - does not delve deeply into hydraulics, hydrology, erosion control, fish passage, or construction.

Who this course is for:

Conservation Professionals and junior engineers

Culvert Design using HY-8

What you'll learn

Explore related topics

Course content

Introduction to Culverts6 lectures • 10hr 8min

Check Existing Conditions4 lectures • 21min

Design a Culvert from Scratch3 lectures • 6min

Requirements

Description

Who this course is for: