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


I got a compaction test for a 10k s

I got a compaction test for a 10k s

I got a compaction test for a 10k s

I got a compaction test for a 10k sq.ft. slab. Six tests. All OK (97 & 97 %) I ask for the location sketch of tests. Testing guy makes a sketch and tells me the test does not require locations. I check 3 other testing companies and one P.E. They each confirm location is not required by ASTM test. What's wrong with this picture? (Don't really want to know what reasonalble people would do.) Thanks. oldinspector

RE: I got a compaction test for a 10k s

If you hired the testing company then you should agree that the scope of work requires a sketch. if this was an ASTM nuke test, than location (but not a sketch) is required as standard practice.

Quote (ASTM D6938)

12.2 Final Report (minimum required information):
12.2.1 Test Number.
12.2.2 Gauge Serial number.
12.2.3 Location of test (for example, Station number or GPS or Coordinates or other identifiable information).
12.2.4 Lift number or elevation or depth.
12.2.5 Moisture (Water) content as a percent.
12.2.6 Maximum laboratory density value in kg/m3 or lbm/ft3.
12.2.7 Dry Density result in kg/m3 or lbm/ft3.
12.2.8 Percent Compaction.
12.2.9 Name of Operator(s).

RE: I got a compaction test for a 10k s

The location of the test is required for sand cone, nuclear density gauge and drive sleeve methods under ASTM; however, a sketch is not required if the descriptive location is properly locatable.

RE: I got a compaction test for a 10k s

Regardless of whether it is in ASTM or not, reference to test locations should be made - offsets to corner of building, etc. Should be standard practice as a matter of common sense. Secondly, were the tests run a "predetermined" spots? Spots that you thought there would be a problem? Or were they randomly selected by some method such as random numbers? For something this large, and with only 6 tests or so, I would prefer a random selection method which would show "no bias". We do this for highway work.

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!


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:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close