×
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

Axial Static vs Dynamic Test (PDA)

Axial Static vs Dynamic Test (PDA)

Axial Static vs Dynamic Test (PDA)

(OP)
Hello,

Which is more reliable, Axial Static or PDA? What is the pros and cons of these tests?

Thanks,
Structech08  

RE: Axial Static vs Dynamic Test (PDA)

both. axial static let's you see what you put on there and can measure what you need. with PDA, it seems like voodoo to some but is a great tool. Plus, you can perform PDA on many piles for a more representative sampling. if i had to pick one or the other, i'd pick PDA.

RE: Axial Static vs Dynamic Test (PDA)

check LRFD.  Static load tests have a higher reliability.  The best reliability is from doing both, however (cost notwithstanding).

f-d

¡papá gordo ain't no madre flaca!

RE: Axial Static vs Dynamic Test (PDA)

(OP)
Hi Guys,

Thank you for your input.

Regards,
structech08

RE: Axial Static vs Dynamic Test (PDA)

Static test are easier, more reliable, less expensive. But you should also emphasize on the aim of the experiment. If your trying to correlate for a dynamic process for example, better to go with dynamic test than static.

RE: Axial Static vs Dynamic Test (PDA)

Static pile tests are easier and cheaper than PDA?!?  For PDA, a guy flies from Cleveland to the site with two suitcases of equipment on Tuesday, tests 5 piles on Wednesday (and gives you preliminary results), flies home on Thursday, spends Friday and Monday on post-processing (CAPWAP), writes the report and emails it to you on Tuesday.  Just guessing on their daily rates, but I think that's probably under $US20,000 to test 5 piles, including expenses, and only a week to get you the report.   

RE: Axial Static vs Dynamic Test (PDA)

dgillette, I was a little taken aback when I saw the statement from Arrow also.  For the static test need to install the reaction piles, plus getting the heavy pieces of steel, and then set up and test.  I remembered on on one job site we did several PDA and one static, and static was soo much more laborious. I would be intersted to see the unit price for each test.

RE: Axial Static vs Dynamic Test (PDA)

Arow is out of his mind.  Plenty of local guys do PDAs for a few thousand unless you are in some exotic place where these guys are not available locally.

PDAs do have some disadvantages such as do not work with vibratory hammers (unless hokus pokus is invoked).  Probably not well suited for timber, composite or drilled piles.  They do have the advantage providing some indication of side friction vs end bearing.

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