A doweled contraction joint in a concrete slab has a thickness of T. A portland cement concrete sealant is placed at the top of the joint per detail 2/CJ109. A crack inducer is located at the bottom of the joint per detail 6/CJ109. A smooth dowel bar is positioned at the mid-depth of the slab at T divided by two, with one end painted and oiled and the other embedded per the dowel requirements table.
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