A.11 Masonry control joint vs. expansion joint

It’s been said before but it bears repeating: Buildings move. Building materials move. We must design to accommodate movement.
This short video provides a review of brick expansion joints (because brick expands), and control joints in the block (because concrete shrinks). Note that in this example, the CJ in the block is not aligned with the EJ in the brick, making it more difficult for water to find a path into the building envelope.
#Masonry #ExpansionJoint #ControlJoint #MovementJoint

[@richardguevara787]

Thank you for the explanation.

[@rustyneedles3743]

I'm reading about this in our regulation standards here in NZ, they mention control joints need to be put in every 6 meters, but I've seen many a 20+ meter long block wall with not one control joint? your thoughts on this?

[@ScandleBar]

Nice music. Reminds me of da me of bio dome