This statement was developed by the Public Health Nursing Definition Document Task Force. under the direction of the leadership of the Public Health Nursing Section of the American. Public Health Association. The statement was adopted by the Public Health Nursing Section.
A Hinged Expansion joint is an assembly designed to absorb angular rotation in the plane perpendicular to the hinge pins. The hardware consists of two hinged plates 180 Â° apart and joined to the end connection.
As you stated, they control where the concrete will crack. An expansion joint is done by putting expansion material in before the concrete is poured. the material is usually 1/2 to 1 thick, depending on what is needed and allows the concrete to expand and shrink during warm or cold climate changes.