×
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

Safe Offset to Avoid Pile-Driving Impact

Safe Offset to Avoid Pile-Driving Impact

Safe Offset to Avoid Pile-Driving Impact

(OP)
Here's my setup: a very old timber bulkhead (16 ft exposed) adjacent to an operational timber dock is in bad shape: bowing in places, timber deteriorated, etc. I need to locate a new dock structure in shallow water nearby but am concerned about vibrations and impact waves from piling (both sheet-piles and pipe piles)triggering a collapse of the wall and impacting the existing dock.  Profile I'd be driving in: up to 13 feet of fine alluvial sand and silt, some organics; then med. dense to dense sand and gravel.

What I'd like to know is how far away do I have to be from the timber bulkhead to be sure the disturbance from the piling activity has attenuated?  Is there a way to quantify the relationship between magnitude of ground vibration and its propagation distance depending on the soil?  Thank you very much for any input you might have.

     

RE: Safe Offset to Avoid Pile-Driving Impact

Not accurately...usually have to measure it for site specific conditions.  If it's any consolation, your conditions tend to attenuate vibrations more than some others.

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