Home Outdoor Decking BCA deckregulations Decking BCA deckregulations By team@build.com.au - September 7, 2020 0 Trying to find out exactly what I need to do for footings and bearers for my deck and whether or not I need bracing. Bearers and joists are 50x 100 seasoned karri and deck boards are 22mmx 135mm seasoned karri.