Technical

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Technical

  • De-bonding No More!

    A new method for non-destructive integrity testing of drilled shafts and micropiles using hallow rebars

    By Horst Aschenbroich, Dipl Ing., Con-Tech Systems

     

    Due to the possible de-bonding problem of smooth entry tubes with concrete for crosshole sonic logging (CSL) in many drilled shaft projects, test results can be wrongly interpreted. Unnecessary and costly remedial work is often conducted. The Hollow Bar system, originally introduced by Con-Tech Systems in North America, for grout injection bored IBO, soil nails and micropiles, turned out to be an ideal hollow rebar solution to solve the de-bonding problem. As an additional bonus, tests have shown that replacing standard rebars with the hollow bars used for CSL will produce a much more rigid and stiffer rebar cage, making handling and placing into the drilled hole faster and safer.

  • Go Pound Sand

    THE RAPID IMPACT COMPACTION SYSTEM

    By Neil Isenegger, P. Eng., GeoSolv Design/Build Inc.

     

    As challenging soil sites become the norm, the search is on for innovative and cost-effective methods to support new building construction. When spread footings simply don’t work, traditional approaches to poor soils such as over-excavation and replacement or deep foundation systems can be costly, time-consuming and cumbersome.

  • Got Them Sandy Soil Blues?

    The Densipact® system may be just what your project needs

    By Mark Tigchelaar, P.Eng.

     

    Sandy soil can be found throughout all regions of Canada and oftentimes in areas of planned development for large, load-bearing structures.

  • Non-Destructive Testing of Unknown Foundations

    Choosing the correct method can be challenging

    By Hamed Layssi, P.Eng., Ph.D., and Farid Moradi, P.Eng., Ph.D., FPrimeC Solutions Inc.

     

    Aging transportation infrastructure in North America is a serious threat to both the fabric of society and its economy. Many of these critical structures, such as bridges, wind turbines, transmission lines and telecommunication towers require proper inspection and maintenance. The most important issues with regard to ageing structures are the present condition of these assets and identifying maintenance priorities among a wide range of infrastructure facilities.1

  • Overcoming Poor Soil

    Geopier GeoConcrete® Column System can provide a solution for extremely high loads in very poor soils

    By Bentzi Belfon, GeoSolv

     

    Structural foundations are often forgotten by most people outside of the construction industry, even though without those same foundations, most structures would quite literally sink into the ground. As anyone familiar with foundations can attest, they are far from easy to design and can often be very costly, given the many unfavourable surprises you might find underground.

  • Pile Integrity Testing

    Applications and limitations

    By Drs. Hamed Layssi and Farid Moradi

     

    A solid, stable and safe foundation is a must havein the development of every major infrastructure to ensure their

  • Underground Investigation and Risk Management

    Managing geotechnical risk without being afraid

    By Masoud Manzari, P.Eng. and Mark Tigchelaar, P. Eng., GeoSolv Design/Build

     

    In the last article, we covered the relationship between projects and risk.

    In this is the third and final installment, we will discuss the right way to manage geotechnical risk as it pertains to high-risk projects.

  • Underground Investigation and Risk Management – Part 2

    Risk and projects

    By Masoud Manzari, P.Eng. and Mark Tigchelaar, P. Eng., GeoSolv Design/Build

     

    The first article of this series covered “What is Risk?” Now we will discuss how risk and projects interact.

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About Us

Piling Canada is the premier national voice for the Canadian deep foundation construction industry. Each issue is dedicated to providing readers with current and informative editorial, including project updates, company profiles, technological advancements, safety news, environmental information, HR advice, pertinent legal issues and more.