JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. D4. Canadian Codes D4.A. Canadian Codes - Concrete Design per CSA Standard A23.3-94 D4.B. Canadian Codes - Steel Design per CSA Standard CAN/CSA-S16-01 D4.C. Canadian Codes - Cold Formed Steel Design per S136-94 D4.D. Canadian Codes - Timber Design per CAN/CSA-086-01 D4.E. Canadian Codes - Steel Design per CAN/CSA-S16-09/14/19 Parent topic: D. Design Codes