Design Parameters

Expansion Joint Design Parameters: Movement

Axial Compression
The dimensional shortening of the expansion
joint face-to-face gap parallel to its
longitudinal axis
Axial Extension (Elongation)
The dimensional displacement of the inlet and the outlet flanges of the expansion joint perpendicular to its longitudinal axis.
Lateral
The dimensional displacement of the inlet and the outlet flanges of the expansion joint perpendicular to its longitudinal axis.
Torsional Rotation
The twisting of one end of the expansion joint with
respect to the other end about its
longitudinal axis.
Angular Rotation
That movement which occurs when one flange of the expansion joint is moved to an out-of-parallel position with the opposite flange.