Test Video Revealed at SuperPile 2016

Interested in learning about the results of our recent seismic test on helical piles? Don’t miss my plenary session presentation titled “Large Shake Table Test on Helical Piles: Test Program and Preliminary Results” on the main stage at DFI’s SuperPile ’16 on June 7-9, 2016, at The Westin Michigan Avenue Chicago.  The presentation is on […]

Helical Pile Shake Test a Huge Success

(as posted on Linked IN) The seismic shake test on helical piles went so well!  A great big shout out to the National Science Foundation, the Deep Foundation Institute and all of the Helical Pile and Tieback Committee Sponsors who made this test possible. Project Sponsors Hubbell-Chance ( MacLean Power Systems ( RamJack Systems Distribution […]

A blog of a blog….

My blog (this very blog) has been featured in ANOTHER blog!  How exciting!  Check it out! We continue to work on reducing the data.  To date, we have the ten piles and all the strain gauge data organized by pile and location and bending moments (and axial loads – although we’re suspicious of a […]

Five Shake Days Complete

The three week test sequence is finally complete.  We pulled the skids off yesterday afternoon and are un-installing the piles today (Wednesday, February 24, 2016).  I will take lots of pictures of the piles as they come out of the sand box – I want to check out what exactly happened to some of the […]

Seismic skids are locked and loaded

We spent a LONG day Friday taking off the concrete donut weights, measuring and drilling lots of pile cap holes and we managed to place one skid around 5:30 pm. Early Saturday morning we placed the second skid and filled them both with sand. Each skid weighs about 3,000 lbs and we filled the 5.5″ […]

Let’s shake! (Finally!!!)

Well, the day has finally arrived. We are shaking the piles tomorrow morning. (Wednesday, February 17, 2016). We will do seven shake sequences starting from the 1994 Northridge California Earthquake (around a Magnitude 6.7) and ending with the 1995 Kobe Takatori Japan Earthquake (around a Magnitude 6.9). We will vary the amplitude starting from 50% to […]

Schedule week of February 15th

Greetings from the 2016 GeoStructures conference in Phoenix. Don’t worry- I fly back to San Diego tonight to keep the test sequence moving ever forward. We are planning on having all the cables hooked to the data acquisition by the end of the day Tuesday and do the first shake on just the piles Wednesday […]

125 strain gauge cables spliced and bundled…

In an amazing feat of teamwork, we were able to finish splicing, dropping and bundling 125 strain gauge cables.  We also worked on getting the seismic skids modified and pile caps marked for installation. We will spend Thursday and Friday hooking up the strain gauge and accelerometer cables into the data acquisition system and hopefully […]