control-masonry-joint
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control masonry joint
HB50
joint or gap constructed in masonry to control and absorb movements in that masonry
Control joints include the following:
- (a) contraction joints (or opening control joints), which open as the masonry contracts or shrinks.
- (b) expansion joints (or closing control joints), which close as the masonry expands.
- (c) articulation joints, which open or close to allow structural movements.