Fabricated building with metal purlins

A metal building comprising:

• a pair of metal sidewalls positioned in an upright spaced apart relationship;
• a plurality of metal purlins, each purlin including an elongated metal channel having a C-shaped cross-section, and a pair of metal hangers each having a metal plate with an L-shaped cross section including a generally vertical portion and a generally horizontal portion, an inverted channel integrally formed along an upper edge of the vertical portion with a base extending outwardly from the upper edge in a direction opposite to the horizontal portion, the metal plate of each hanger being affixed to a separate end of the elongated metal channel with the vertical portion abutting the separate end of the elongated channel and a lower edge of the elongated channel resting on the horizontal portion so that the inverted channel extends outwardly from the elongated metal channel in an opposite direction;
• each inverted channel being engaged with an upper edge of one of the metal sidewalls so that the plurality of metal purlins extend between the metal sidewalls and maintain them in the upright spaced apart relationship;
• and
• vertical support posts each having one vertical side juxtaposed to one of the pair of metal sidewalls and an upper end abutting a lower surface of the horizontal portion of a metal plate.