Lateral force resisting system

Abstract

A lateral force resisting system according to the present disclosure includes a metal lateral force resisting panel and holdowns. A foundation bolt placement template may be used to locate and support the foundation bolts during fabrication of the foundation and to further secure the frame foundation interface. The metal lateral force resisting panel may be formed from a single piece of material and may include a plurality of ductility apertures forming lateral force resisting elements to enable the panel to flex without catastrophic failure. In a hybrid configuration, a wooden structural frame may be combined with the metal structural panel. The structural panel may be subdivided into multiple panes using ductility apertures to tailor the response of the panel to the lateral force load. The holdowns secure the rigid structural panel to the foundation bolts and may be either a folded strap and pin configuration or self-tightening.

1 . An apparatus comprising: 
 a rigid, generally rectangular structural frame having two parallel and coplanar vertical side members connected by one or more coplanar horizontal members, the one or more horizontal members connected perpendicular to the one or more vertical side members forming a generally rectangular opening therebetween;    a generally rectangular lateral force resisting panel coplanar with and connecting each vertical side member at a vertical joint, wherein the panel is recessed or inset into the structural frame;    a plurality of fasteners for securing the generally rectangular panel to the respective vertical side member; and    two holdowns, each holdown attaching a vertical side member to a foundation bolt.    
     
     
         2 . The apparatus of  claim 1  further comprising: 
 a foundation bolt placement template for defining a mounting location for the structural panel, and locating and supporting the foundation bolts during fabrication of the foundation or slab or stem wall.    
     
     
         3 . The apparatus of  claim 1  further comprising: 
 one or more generally rectangular reinforcing plates, each plate covering all or a portion of the vertical joint between the panel and each vertical side member.    
     
     
         4 . The apparatus of  claim 1  wherein the lateral force resisting panel is plywood or oriented strand board.  
     
     
         5 . The apparatus of  claim 1  wherein the lateral force resisting panel comprises two or more subpanels.  
     
     
         6 . A manufactured shearwall comprising: 
 one or more generally rectangular lateral force resisting elements;    two generally parallel side elements, each side element having a slot to engage the one or more lateral force resisting elements between the two generally parallel side elements;    one or more frame elements generally perpendicular to the two side elements secured therebetween;    a plurality of fasteners for securing the one or more lateral force resisting elements to the vertical side members and the frame elements;    two holdowns, a holdown securing each side element to a foundation bolt.    
     
     
         7 . The manufactured shearwall of  claim 6  further comprising: 
 one or more reinforcing plates, each plate covering all or a portion of the slot engaging the one or more lateral force resisting elements and each vertical side element.    
     
     
         8 . The manufactured shearwall of  claim 6  wherein the one or more frame elements further comprise one or more slots for engaging the one or more lateral force resisting elements.  
     
     
         9 . The apparatus of  claim 6  wherein the one or more lateral force resisting elements are plywood or oriented strand board.