A mechanical joint, sometimes referred to as MJ, is a compression joint designed for underground connections for pipes, valves, and fittings.
Function
Mechanical joints allow for some joint deflection while maintaining a seal under pressure. This type of connection allows for some misalignment of the two connecting pieces due to ground settling or other installation difficulties.
Application
Composite structure assemblies always use mechanical joints because of their cost efficiency and accessibility. However, the use of mechanical joints involves the drilling of holes and installation of fasteners.
