CertiWood Technical Centre

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CertiWood Technical Centre

Tel. (Toll Free): 1-866-981-4177
Fax: (604) 985-0342
#100 - 375 Lynn Avenue North Vancouver, BC, Canada V7J 2C4

CertiWood completes I - Joist Development Work

CertiWood, North Vancouver BC recently completed a year-long project with Tolko Industries focused on developing, building and evaluating wood I-joists, in preparation for their planned I-joist plant in Alberta.  CertiWood is accredited to provide a variety of certification and testing services related to engineered wood products.


I-Joist Project Summary:

CertiWood Staff built wood
I-joist prototypes in their custom-built press. The press was 25’ long and replicated in-mill pressing and curing conditions.
Once manufactured and cured, the 25’ I-joists were destructively tested in CertiWood’s Long-Span Beam Tester.  Test results were used to evaluate the adequacy of the adhesive, the OSB and the flange-stock.  The tests also benchmarked performance for further improvements to the I-joist’s construction.
CertiWood technologists machined the OSB webs in our Panel Edge Profiler.  Web tips were custom cut for a proper fit into the flange groove.  CertiWood engineers worked with the client to maximize the strength in the web-to-flange connection.
Finger-jointed flange stock was destructively tested in CertiWood’s Tension Tester, to quantify strength and ensure adequate design values. 

CertiWood engineers used these test results to help develop with the client, custom grade rules to optimize recovery.