Patent ID: 8656655

Claim:
A modular containment wall system for use with a barrier member to provide secondary containment around one or more liquid storage tanks in a storage area, the wall system comprising: a plurality of panel members arranged to be connected in series with one another to form a perimeter about the storage area, each panel member comprising: a main wall portion spanning vertically between a top and a bottom of the panel member and spanning longitudinally between opposing ends of the panel member which are arranged for fastening to the ends of adjacent ones of the panel members in the perimeter about the storage area; and a brace comprising a triangular gusset panel which is coupled by a hinge to the main wall portion for relative pivotal movement about a hinge axis which extends vertically between the top and the bottom of the panel member between a working position in which the gusset panel is substantially perpendicular to the main wall portion and a storage position in which the gusset panel is substantially parallel to the main wall portion; wherein the brace includes a foot panel mounted along a second edge of the gusset panel substantially perpendicular to the main wall portion adjacent the bottom of the panel member, the foot panel being pivotal with the gusset panel relative to the main wall portion between the working position and the storage position.