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This Boise landmark restaurant utilizes large engineered timber framing and structural insulated panels (SIPs) to create an open and unique atmosphere at its new Harris Ranch location.
This retail and office mixed use complex is a series of steel framed buildings. The lateral forces are resisted primarily with ordinary steel moment frames to allow for open storefronts and flexibility. The second levels are a composite steel and concrete on steel deck design.
This all steel structure was designed as an ordinary steel moment frame system. The steel shapes and sizes were governed more by the architecture rather than the structural analysis
AHJ provides the structural design for these retail stores throughout the Pacific Northwest. The stores vary in size from approximately 13,000 to 15,000 square feet. The main structure is a steel joist and deck roof with structural masonry unit walls. The floor is a typical concrete slab on grade with a concrete foundation and conventional spread footings. Multiple canopies are designed at the front elevations as well as a drive through pharmacy canopy.
The structural system for this building consists of open web steel joists and girders supported by load bearing masonry walls in the auditorium and steel frames in the lobby/restroom areas. The major design challenge for this project was the design of the unusually high masonry walls in the auditorium area. The walls are approximately 63’-0” high, of which 10’-0” is an underground concrete wall. The 8” masonry walls are designed to transfer the lateral loads (i.e. wind/seismic) horizontally into the 2’-0” square masonry pilasters that support the roof girders. Another interesting aspect of this project included the detailing/construction of the slab on grade stadium seating in the voluminous auditorium area.
Our role for this project was to re-design the structural system for each retail building using steel framing members instead of the heavy timber construction elements that were specified in the original contract documents. The purpose of this framing revision was to try and reduce the cost of the structural framing system without altering the architectural appearance of the buildings. This was accomplished with the use of steel girders, joists and columns for the vertical load resisting system in conjunction with moment and braced frames for the lateral load resisting system.