Cold joints along edge of slabs

Structure · Concrete Floor Slabs · printed page 57 (PDF page 58)

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Book index entries

Cold Joints – along Edge of Concrete Slabs Concrete – Slabs Cold Joints Along Edges

Text in the illustration

supported slab
foundation
this is not a crack, but a cold joint caused by pouring the floor slab and foundation at different times

Generated explanation

The cutaway shows a supported concrete floor slab meeting a concrete foundation wall and footing beneath a wood-framed exterior wall. The slab rests over a granular layer and soil, with its edge supported by the foundation. An irregular dark line along the exposed slab-to-foundation interface is identified as a cold joint rather than a crack. The annotation explains that this joint results from pouring the floor slab and foundation at different times.

Components

supported concrete floor slab foundation wall foundation footing wood wall studs wall bottom plate wall sheathing lap siding floor finish granular base

Materials

concrete wood granular aggregate soil