Structural · S-9PPCX

Masonry Control Joint Detail at Masonry Walls

Materials

Concrete Reinforced Concrete Steel Masonry / CMU

Elements

Beams Walls Roofs Floors / Slabs Decks Arches Expansion / Control Joints Reinforcing Roof / Floor Openings

Connections

Rebar Splice / Development

About this detail

Masonry control joint details depict vertical control joints in concrete masonry unit walls across various conditions including floor and roof bearings, horizontal bond beams, and joint reinforcing. A continuous vertical control joint is sealed on each side with backer rod and sealant, utilizing Dur-O-Wal wide flange rubber or PVC gaskets sized per wall thickness and verified with the architect. At bond beams, horizontal reinforcing is interrupted at the control joint while vertical reinforcing matches two vertical bars on each side of the joint. In single and double layer vertical reinforcing conditions, horizontal reinforcing terminates with standard 180-degree hooks at vertical reinforcing bars. A specific isometric detail notes that due to limited space to accommodate hooks in the block cell, hooks must be placed at an angle to maintain three-quarter-inch cover, requiring the web of the block above to be cut.

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