Patent ID: 8756888

Claim:
A modular building panel, comprising: a panel frame defining a longitudinal length, a transverse width, and a transverse height; a first duct at least partly defined by the panel frame and defining a first passage extending along the longitudinal length of the panel frame and positioned along the transverse width; a first duct stiffener contained within the first duct for providing structural support, the first duct stiffener being truss or zig-zag shaped and extending along the transverse width and the transverse height; a second duct at least partly defined by the panel frame and defining a second passage extending along the longitudinal length of the panel frame and positioned along the transverse width separate from the first duct; a second duct stiffener contained within the second duct for providing structural support, the second duct stiffener being truss or zig-zag shaped and extending along the transverse width and the transverse height; and a wall of the first duct and the second duct comprising a ribbed joist spanning between the first duct and the second duct along the transverse width.