It is a steel pipe brace for seismic retrofit with pin joint at both ends.
AD buckling restraint brace which have a main pipe for bearing axial force is covered with a restraining pipe, produce the same in both compression and tensile strength. The safety of brace durability, clevis, pin and gusset plate has been confirmed at the experiment. The shape and dimensions of gusset plate are standardized, therefore we can omit the examination of it.
