Patent ID: 6748705
Filing Date: 2004-06-15
Classification: E04B,E04C

Abstract:
A seismic resistant wall structure installed between a floor and overhead structure, comprising:an elongated M-shaped track member affixed to an overhead structure, the M-shaped track member having a planar web and a pair of U-shaped flanges extending from the planar web defining the M-shape in cross-section with the U-shaped flanges having an inner leg, a planar leg, and a outer leg defining the U-shaped flanges; a plurality of horizontally elongated slotted openings disposed in the planar web and in the inner leg of the U-shaped flanges, and being spaced lengthwise on the M-shaped track member a plurality of stud members extending vertically between the floor and the M-shaped track member with upper ends of the studs extending into the M-shaped track members in alignment with horizontally elongated slotted openings and lower ends fixedly attached to the floor; and fire retardant wallboard moveably attached to the studs, allowing relative vertical movement of the wall.