Abstract: Reinforcing system for retrofitting wall to increase the ductility and resistance to shear forces of a gypsum board wall to a level comparable to plywood-sheathed wall. Fiber-reinforced polymer panel is attached to substantially cover surface of gypsum board to protect it against rupture in earthquake. Reinforcement is enhanced by fiber anchors installed along base of wall and door frames. Connector strips tie together frame members to prevent separation from wall.

Abstract: Cost-effective reinforcement system for frames walls helps support against failure from violent lateral forces. Strips of resin-impregnated textile in crossed pairs are attached to frame members. Attachment of ends of strips is ductile due to use of multiple fiber anchors.