Concepts and technologies are disclosed herein for a purlin. The purlin can include a steel structure having a pair of outer flanges flaring away from a support surface for defining outer edges of the purlin. Connected to respective inner edges of the outer flanges along bent edges can be a pair of supports. The supports can be configured to engage a support surface and define a lower surface of the purlin. Connected to respective inner edges of the supports can be a pair of support webs that extend away from the support surface.