Civil · L-9DB25

Concrete Slab Joint Details: Expansion, Control, and Isolation

Materials

Concrete

Elements

Walls Floors / Slabs Expansion / Control Joints Site / Paving Anchors / Embeds Reinforcing

Connections

Rebar Splice / Development

About this detail

Three distinct concrete slab joint types comprise expansion, control, and isolation joints. The expansion joint incorporates a three-quarter-inch diameter dowel eighteen inches long spaced at twelve inches on center with one end greased, set within concrete slabs separated by pre-formed compressible filler through the full depth of the slab and finished with polyurethane elastomeric self-leveling sealant and a backer rod with no bond. The control joint features a one-quarter-inch typical saw cut at a depth of one-quarter the slab thickness sized per plans. The isolation joint consists of a concrete curb or wall abutting a slab with pre-formed compressible filler running the full depth, topped with a backer rod and polyurethane elastomeric self-leveling sealant color-matched to the pavement surface.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details