×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*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.

Students Click Here

Jobs

storm drain % and crown of roads

storm drain % and crown of roads

storm drain % and crown of roads

(OP)
Im just starting at an excavating co. and would like to know the best way to figure out the % of pitch in a RCP storm drain. I have the two invert elevations and the distance of the run. Also would like to know how to find the crown of a road if I have the edge elevations and the distance frome edge to center. thank you.

RE: storm drain % and crown of roads

1. Subtract the lower invert from the higher invert and divide by the distance.

2.) The center line of road is your crown, meaning you
need the center line road elevations and do the same as above. Usually it's about 2.00% on 50' r/w.

RE: storm drain % and crown of roads

JackHewit,

Be careful. Although, buildselection is correct for an invert-to-invert calculation, you should check with the engineer-of-record. Sometimes, the engineer will need to match the pipe crowns (not the inverts)in order to capture the HGL.

I hope this helps. Good luck.

H.

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.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources