×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Are you an
Engineering professional?
Join Eng-Tips Forums!
• Talk With Other Members
• Be Notified Of Responses
• Keyword Search
Favorite Forums
• Automated Signatures
• Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

#### Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

#### Jobs

(OP)
I have a question on how to determine head within a pipe system. I am not an expert pressure pipe system analyst. We have a sedimentation pond with an 6" HDPE pipe line draining water from it. The outlet of our pipe is at 505 at the pond and the pipe will be layed on the ground, downhill to an elevation of 480. At 480 it needs to go up and over a 5' berm. What is the best way to determine if the head pressure in the pipe will push the water up and over the berm?

### RE: Head Within Pipe System

Pull out your intro to fluids textbook and flip to the energy equation chapter. What you describe is a pretty basic homework problem.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

### RE: Head Within Pipe System

The pressure in the pipe will necessarily cause the water to flow from a higher to a lower elevation.
The only question is at what rate.

### RE: Head Within Pipe System

(OP)
Gravity will cause it to fall from a higher to lower elevation but when you have sort of an inverted siphon, what head losses need to be overcome and what elevation change do you need.

### RE: Head Within Pipe System

As long as your inlet is the highest point in the system, you will get flow*. Friction can reduce that flow but never stop it.

*inverted siphons not considered here.

#### Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

#### Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Close Box

# Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

• Talk To Other Members
• Notification Of Responses To Questions
• Favorite Forums One Click Access
• Keyword Search Of All Posts, And More...

Register now while it's still free!