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Happy New Year Sudbury and North Bay Canadian Geotechnical Society colleagues,

For our section’s first event of 2020, Dr. Joe Carvalho, P.Eng., a Principal of Golder Associates in the Mississauga office will be presenting Numerical Modelling and Rock Mass Characterization Approaches for Design of Foundations in Weak Coralline Limestone. An abstract of Dr. Carvalho’s presentation is presented below.

Abstract: Integration of rock mass characterization and structural building behaviour observations, coupled with extensive use of numerical modelling methods were fundamentally important in developing an in-depth understanding of settlement issues related to very weak, vuggy, uncemented coralline limestone foundations in Barbados.  Replication of observed building behaviour was achieved through modelling of the weak vuggy openwork fabric of the coralline limestone through use of tesselation approaches within UDEC based on data acquired from a program of detailed diamond core drilling, coupled with downhole camera observations of rock mass conditions.  A micropiling and grouting design was developed to improve the conditions of the foundations and remedy the observed distress issues.  The design was developed based on structure-foundation interaction analyses considering both geotechnical and structural approaches, with use of FLAC as the principal code for assessment of interaction issues.  The original design assumptions and veracity of the numerical modelling assessments were checked by reviewing the drill-ability and grout-take data from the drilling and grouting during the installation of the micropiles used for strengthening the foundations and visualized in 3D.

The presentation will be held at Golder’s Sudbury office at 33 McKenzie Street and will be linked via video conference to Knight Piesold’s North Bay board room at 1650 Main Street West.   For parking at the Golder office, you will need to provide your license plate number when you sign in at the reception desk to avoid ticketing.  Please note this is a bring-your-own lunch event.  Seating is limited so please accept this invite so we can determine attendance in advance of the presentation.  

In addition, Dr. Ian Moore provided a great presentation for the Cross-Canada Lecture Tour in Fall 2019 titled Geomechanics of Trenchless Pipe Installation, Repair and Replacement.  A link is provided below if you wish to view the presentation:

https://www.youtube.com/watch?v=GnYneMuD_us

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We look forward to seeing you at the event!

Andre Bom

CGS Sudbury-North Bay (Northern Ontario) Section Chair

705-524-6861