×
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

Behaviour of weathered rock

Behaviour of weathered rock

Behaviour of weathered rock

(OP)
A one storey building and a highway bridge are going to be constructed on a site, in which the site investigation indicated about 10m of highly weathered travertine overlying fresh travertine.

No rock cores were obtained within the weathered rock and the samples taken look like sand (with some traces of fresh rock). Cliffs in the area consisting of this material stand literally vertical.

So, how do you think this material behaves under loading? As a loose sand as the SPT results show, as a sand with some cohesion or as a rock with really low engineering properties??

Thanks!

RE: Behaviour of weathered rock

I would say that since your structures are to stay for a normal lifespan, as the loose sand. Further meteorization may bring this behaviour to your soil. This doesn't mean however that you need entirely forfeit any intelligence standing from the investigation of the placement.

RE: Behaviour of weathered rock

Why ask us?  You should be asking the geotech who did the site investigation.

Having said that, it is not surprising that the product of boring in highly weathered rock looks like sand.  But if it is highly weathered rock in situ, it should behave as such.  As to travertine specifically, I don't have any experience with founding on that.

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