FAQ's - Roterra Piling has the answers to your questions.


Why Roterra?

Roterra offers all major foundation solutions backed by a team with over one thousand years of piling experience.  We are a progressive service provider that actively adopts technological innovation to offer ultimate value in turnkey piling services for any application - all with a collaborative approach.  


Who is Roterra?

Roterra is a family owned and operated private corporation that started in 1992 when our group of companies was founded.  We are located in Western Canada and offer engineering services, metal fabrication, project management and turnkey piling solutions for all industries and applications.  


What services does Roterra provide?

Roterra provides turnkey services for foundation projects.  We provide engineering feasibility and design services, static and dynamic load testing, soil investigation, surveying, pile fabrication and installation, metal manufacturing and machining, and project management.


Where does Roterra operate?

Roterra engineers, manufactures, and installs throughout western Canada and beyond from our head office just outside of Edmonton, Alberta, Canada.  We are always open to opportunities to bring our expertise to help make a project successful.


What type of piles does Roterra offer?

Helical piles, driven piles, bored piles, and continuous flight auger piles.  Each foundation solution comes with advantages and disadvantages, limitations, and certain economies based on many factors.  Our team of estimators and engineers are led by a core of professional engineers with hundreds of which we analyze for each individual project based on structure and geotechnical information. 


How do I know what pile type to use for my project?

The easy answer is contact Roterra.  We can analyze your project information and provide you with the pros and cons of each type of foundation as well as pricing for each option.  From their we are able to provide your project with stamped foundation drawings, pile supervision, inspection and schedules, and actual pile installation.  We are willing and able to offer any part of the value chain for projects. 


What is a helical pile?

A helical pile is made of a pipe shaft, typically round or square, with one or more steel helixes welded onto the bottom of the pipe shaft. 


Helical piles are installed with a hydraulic drive head or drive motor.  A hydraulic drive motor is attached to a piece of equipment (bobcat, skid-steer, boom truck, excavator, etc.) and is connected to the pile with drive pins. This drive motor rotates the pile and the downward pitch of the helical plate pulls the pile into the ground. 


What is a driven pile?

A driven pile is the oldest type of deep foundation in existence. Roterra primarily utilizes steel h-pile and steel pipe piles. Driven pile types also include precast concrete, pre-stressed concrete, timber piles and compacted concrete piles. 


Driven piles are driven, pushed or otherwise installed into the ground with hydraulic or driven powered hammers attached to various carrier machines. 


What is a bored pile?

A bored pile is concrete pile reinforced with steel.  This traditional type of pile can be straight shaft or belled depending on the soil conditions and the design. 


Bored piles are formed by using an auger to remove soil, which is then replaced with concrete and reinforcement.  Bored piles can be enlarged or “belled” at the bottom to increase end bearing resistance and this is accomplished with a specialized toll attached to the piling rig.


What is a Continuous Flight Auger (CFA) pile?

A continuous flight pile is an innovative concrete pile that is reinforced by steel.  This type of piling is much quicker than a traditional bored pile and does not require casing in weak soil areas.


A CFA pile is formed by drilling with a continuous auger into the ground to the pile design depth.  The auger is then slowly removed while concrete is simultaneously pumped into the ground.  Reinforcement is placed into the concrete.