A structure comprises a ridge beam, a plurality of truss beams, and a plurality of legs. The ridge beam comprises a first end and a second end. Each end comprises at least one tab member that projects in a direction that is substantially parallel to a plane of the ridge beam. Each truss beam comprises first and second ends that each comprises a plurality of apertures and at least one tab member that projects in a direction that is substantially parallel to a plane of the truss beam. Tab members of two truss beams are respectively capable of engaging a corresponding aperture of the other truss beam to form a peak section. At least one aperture of each of the two truss beams is capable of being aligned receiving a corresponding tab member of the ridge beam. Each respective leg engages the second end of a corresponding truss beam.