dummy joint

dummy joint

[¦dəm·ē ‚jȯint]
(engineering)
A groove cut into the top half of a concrete slab, sometimes packed with filler, to form a line where the slab can crack with only minimum damage.

groove joint

A construction joint formed by a groove in a floor slab, wall, or pavement; used to control random cracking.
References in periodicals archive ?