Recent content by HSIII

In accordance with ASTM D1557, any material with more than 30% oversize cannot be proctored using this method, as what usually happens is that the required correction factor involved would throw the maximum dry density number way outside of any type of ability to achieve 95% compaction (as is...

I have a client who requested ASTM C-1260 (ASR through Mortar Bar Expansion) from a testing agency. It turns up after the test was performed and completed (9 months had passed) that this was for a bridge, and as such the testing should have been in accordance with AASHTO T-303. This then...

Honestly, in the past when I worked full-time for a geotech company we used a template created in CAD, and just set the sheet up in model space with actual inches, then when it printed in paper space it fit just fine on the sheet and had the headers/footers necessary for the project. -HSIII

I would say a singular NICET qualified person (Level I or level II) should be able to handle the field responsibilities. Most of the time the firm also has the laboratory capabilities for the project, so one firm should be able to handle both ends of the spectrum for a paving project like...

Hear hear Mike!

Ron, So would you say a continuous run over, say, a week during operations with the trigger set at 0.1 in/sec would be sufficient, or overkill?

It's maily bedrock approximately 2' below bottom of footing elevation. No real chance of liquefaction, but I think because of the existence of bedrock that I should knock down the PPV's a touch ("factor", if you will)

Hey all, A client of mine is going to have sheet piles placed close to (200' to 300' away from) his commercial structure. He wants a vibration assessment done on the structure. I have a fairly recent (3 years old) geotechnical report of the site soil conditions. In your opinion, should...

From what I've seen, sodium hex usually has a shelf life of 1-2 years (powdered is approximately 1 year) unopened and stored in favorable conditions. I would do what Fixed recommends, try another hydrometer bulb, and make sure it was distilled water which was used.

stanweld, Just read over the newest edition of the RCSC...yep, you're right, right there in black and white. Thanks.

I have a client who is planning on using silicone-filled direct tension indicator washers for connections. The owner's QC guy is adamant that a skidmore is required to determine the number of refusals required at a specific tension, and that's the only way, hands down, no other way according to...

Y'know...I've always wondered about performing r&d for proctors on different soil classifications in 1% increments just to see how they'd play out for proctor curves, specific gravities, total saturation, etc. However, I know that's not really feasable because even within the different...

usually you won't be able to run higher moistures without some degree of bleeding if the sample is that clean. Especially if it is a gravelly-based material as opposed to a sandier one.

Yes to the pounding, in order to complete the curve series. Don't forget, ASTM D1557 requires a minimum of 4 points for your moisture-density curve. If you're that worried about bleeding, perhaps try placing a slip of filter paper on the bottom of the proctor mold prior to pounding your...

Gump, Thank you so much!!! I knew I forgot one (ICRI), but I was having a slight brain fart. Sitting there going "ACI...CRSI...um....darn." Thanks for clearing my cobwebs.