Other than the CSA B79-08 requirements plumbing officials are looking for an IAPMO report on your shower waterproofing product or shower drain. Installing a shower drain with out this IAPMO certificate can become problematic if these documents are requested.
I will try and list all the IAPMO Certificates I can find here on my blog site. The list will take a while to generate and if your in a rush you can go here and search for them. http://pld.iapmo.org/default.asp
Many drains are made by another manufacture and relabelled - for example you will find the approval for the CeraLine drain under the Dallmer GMBH & Co. KG listing here http://pld.iapmo.org/file_info.asp?file_no=0006104 New products may state they comply with these codes but complying and being certified are two separate things. Make sure your linear drain has a IAPMO certification. Printing these reports off and having them ready for city inspectors can make your life very simple come inspection time.
Below is a list of the technical committe that help develop this standard.