A 10,000 square foot addition to an existing warehouse building, The Community Food Co-Op in Bozeman, Montana combines numerous steel and wood features with existing masonry. Due to the openness of the building, the lateral force resisting system consists of a series of large steel moment frames with wood shearwalls. The roof system is a combination of timberframe wood trusses and sandwich panels. The upper floor is concrete on steel bar joists supported with open span steel beams. The exterior porch roof and floor are supported with thirty foot tall steel “mast” columns and steel rods forming a unique support system.