Field glossary
Control / contraction joint
A planned weak line that makes concrete crack where you want it, within a single element, without separating it
Used across 3 Anvilfield field guides, most in Concrete.
Also defined as
- A planned weak line cut about a quarter depth to steer the shrinkage crack into the joint
- A planned weak line, sawcut or tooled, that steers the drying-shrinkage crack
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