Patent ID: 8065855

Claim:
A room structure for attachment to a building wall, the room structure having an upright frame assembly including an upper end and formed by at least one enclosure wall and a roof structure extending between the exterior wall and the upper end of the frame assembly, the frame assembly including at least one vertically disposed axially elongated support member, the support member comprising: an assembly of an I-beam and a closure member, the I-beam and the closure member being of substantially the same axial length; the I-beam and the closure member each being unitary and comprised of a single piece of a non-metallic composite material; the I-beam being axially elongated and having a central body and a pair of transverse flanges, the flanges each having a pair of opposed outer edges positioned away from the central body, the flanges and the central body defining oppositely facing squared-C shaped channels; and the closure member being axially elongated and comprising a base wall, a pair of sidewalls, and at least one support wall, the sidewalls extending from opposite edges of the base wall and the at least one support wall upstanding from a medial location along the base wall; wherein the closure member is snap-fitted in a friction fit into the squared-C channel of the I-beam to substantially close the channel and in a manner that the base wall of the closure member and the outer edges of the flanges of the squared-C channel into which the closure member is interfitted are substantially coplanar.