Accommodate these movements with a series of expansion joints.
Brick wall expansion joint.
Cracks in brick walls.
Expansion control joints to control the expansion and protect the wall structure from cracking under pressure masons install vertical control joints at specific locations.
In the past when cmu and brick walls were constructed as bonded composite walls control joints and expansion joints needed to be coordinated and aligned through both the block and brick.
Review each structure for the extent of movements expected.
While these attributes are the primary basis for concrete masonry s.
In modern masonry cavity walls these two different masonry wythes are connected with flexible connections so control joints in the cmu back up wall can be.
These joints will absorb the pressure created by the expansion by giving the masonry wall flexible space to expand.
This allowed movement helps prevent distortion and cracking.
The purpose of a masonry control joint is to allow free movement while maintaining the weathertightness of the construction.
Determine the spacing of expansion joints by considering the amount of expected wall movement the size of the expansion joint and the.
An information series from the national authority on concrete masonry technology ncma tek 10 2c 1 control joints for concrete masonry walls empirical method introduction concrete masonry is a popular construction material because its inherent attributes satisfy the diverse needs of both exterior and interior walls.