Structural · S-J7MBM

Typical Hybrid Control & Construction Joints

Materials

Concrete Reinforced Concrete Steel

Elements

Anchors / Embeds Expansion / Control Joints Floors / Slabs Reinforcing

Connections

Expansion / Slip Connection Rebar Splice / Development

About this detail

A concrete slab control joint utilizes diamond-shaped or round steel dowels for load transfer across the joint. For slabs five or six inches thick, a one-quarter-inch by four-and-a-half-inch diamond dowel or a five-eighths-inch by twelve-inch round dowel is specified at twenty-four inches on center. For slabs seven or eight inches thick, a three-eighths-inch by four-and-a-half-inch diamond dowel or a three-quarter-inch by twelve-inch round dowel is used at the same spacing. Round dowels require the exposed end to be lightly greased to allow for movement. A one-sixteenth-inch wide saw cut is required within twenty-four hours of concrete placement, extending to a minimum depth of one-quarter of the slab thickness. A minimum clear cover of two inches is maintained for reinforcement.

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