Seismic Retrofit

///seismic retrofitting in Oregon & Washington

At the University of California, San Diego Ram Jack was apart of a groundbreaking test to show the perfomance of Helical Piles under an existing structure in seismic liquefaction zones. The test was funded by PEER (Pacific Earthquake Engineering Research Center) and was actually the first of its kind to be performed in the United States. The test was extremely successful in showing the performance of Ram Jack's Helical Piles in such conditions, a summary of the test is below.

Test 1

Results of test 1 in the Ram Jack seismic test

During the first test there was no underpinning at all underneath the structure and it settled 11" when it went through the seismic event

Test 2

Results of test 2 from Ram Jack seismic test

During the second test there was 4 Ram Jack helical piles supporting the footing and with the same shake it only moved .5"

11" on a structure would likely cause it to collapse but .5" people would survive. Don't risk it, call Ram Jack West today!

you can access the full video of the test here

Why are Helical Piles the best solution for seismic retrofits?

Using Helical Piles for seismic upgrades allows us to mitigate a lot of the costs that is incurred by these seismic retrofits while having the least invasive solution.

check out this case study where Ram Jack designed and built customized micropile brackets for seismic retrofit