Geotechnical Society of Edmonton

NEWS 2006

Posted March 14, 2006

Event March 15, 2006

Large Capacity Screw Piles Pile Load Tests Comparison (Driven Piles Vs Screw Piles)

Mamdouh Nasr, U of A Graduate Student

Screw piles have been used widely in engineering applications to provide structural stability against axial compression, uplift, overturning and lateral forces. Screw piles are also known as Helical Piles or Piers, Helical Anchors and Screw Anchors.

Screw piles have been used as structural foundations in sites where there were problems in terms of poor foundation material and remote locations with limited access. In those sites the construction of conventional foundation systems, as bored or driven piles, were precluded due to high water table and difficulty of access for equipments and material. Screw piles are believed by many Engineers to be able to carry small load capacities. In this presentation will show the test results of large capacity screw piles carried out in two different sites (Fort McMurray) in which one pile could carry 1300 KN (Uplift) and the other site the pile was tested to 1800 KN (test ceased as we reached the ultimate jack capacity) and pile is expected to carry up to 3200 KN. Also some of the pile load tests carried out on screw piles done by ALMITA at Imperial Oil site in cold lake to compare the behavior of screw piles to driven piles on site is also presented here.

Location: Room - NREF 1-003, University of Alberta
Time: 5:00 - 5:50 pm
Date: Wednesday, March 15, 2006


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