Category Archives: Features

Retrievable Extensometers and Pile Load Testing

Conventional bored pile instrumentation for static load testing generally relies on strain gauges and tell-tales cast in the pile to measure axial loads and movements at various levels and at the pile toe. One drawback with this method is that the instrument locations need to be predetermined and the instruments…

Screw piles and light structures: no brainer for Canadians 

 By Stan Higgins, Postech Screw Piles Winnipeg  The screw pile industry markets hard that screw piles are cheaper than concrete. The truth is that screw piles can be used for a wide range of projects and, depending on the soil characteristics, they aren’t always cheaper.  However, here is a bold…

PKF’s bet on RTG pile driving rigs pays off big

By Brian M. Fraley, Fraley Construction Marketing An RTG RM 20 pile driving rig hammers battered piles in the shadows of a Pennsylvania Turnpike bridge abutment on a narrow strip of land between an embankment and a roadway on a warm October morning in 2016. Upon driving an H-pile to…

Keller Canada proud to help protect Calgary Zoo for generations to come

In 2013, historic flooding of the Bow River devastated the City of Calgary. St. George’s Island, home of the world-renowned Calgary Zoo since the 1920s and situated within the river, was engulfed by floodwater due to mountain runoff and significant rainfall in southwestern Alberta. As a result, the Calgary Zoo…