Structural · S-XYSCB

Slab on Grade Control and Construction Joints

Elements

Floors / Slabs Expansion / Control Joints Waterproofing / Flashing Anchors / Embeds Reinforcing

Connections

About this detail

Concrete slab on grade details show control joint, construction joint, and edge of slab configurations. The control joint uses a plastic rip-strip or tooled joint where exposed with continuous number four reinforcing bars. The construction joint features five-eighths inch diameter by two-foot smooth dowels spaced at twenty-four inches on center at the center of the slab, alongside one and one-half by two and one-half by twelve-inch keys spaced at twenty-four inches on center with alternate bevels from top and bottom in adjacent keys. Continuous number four rebar runs parallel to the joint, and a tool joint is applied where exposed. The edge of slab assembly includes a one-foot thickness, continuous number four rebar, and number four rebar spaced at sixteen inches on center. The base layers consist of two inches of sand, a vapor barrier, and a rock base sized per the geotechnical report.

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