Purlin construction and mounting system for flat roof structures

摘要

A purlin mounting system for use in a flat roof structure includes a purlin with a flat mounting wall and an upright wall extending perpendicularly from the mounting wall. First and second mounting shelves are attached to the upright wall and extend outwardly in opposite directions. Each mounting wall is positioned to receive an edge of a roof section thereon. The flat mounting wall and the upright wall define a vertical mounting channel extending from a lower surface of the flat mounting wall a distance less than the distance of the first and second mounting shelves from the mounting wall. A purlin positioning and mounting device is designed to be attached to a roof beam and includes a vertically extending support wall designed to extend upwardly from a supporting roof beam when attached to the supporting roof beam and to nest within the mounting channel.

主权项

1. A purlin mounting system for use in a flat roof structure comprising:
a purlin including a pair of spaced apart flat mounting walls generally lying in a common plane, a pair of upright walls, one each extending perpendicularly from an inner edge of each mounting wall of the pair of mounting walls, first and second mounting shelves attached one each to the upright walls a distance from the mounting walls and extending outwardly from the upright walls in opposite directions and generally parallel with the mounting walls, each of the first and second mounting shelves being positioned to receive a lower surface adjacent an edge of a roof section thereon, the spaced apart flat mounting walls and the pair of upright walls defining a vertical mounting channel therebetween extending from a lower surface of the spaced apart flat mounting walls a distance less than the distance of the first and second mounting shelves from the mounting walls; wherein the pair of upright walls are formed from a double thickness of the metal strip with a portion of the double thickness of the metal strip separated to define the vertical mounting channel; and a purlin positioning and mounting device designed to be attached to a roof beam and including a vertically extending support wall designed to extend upwardly from a supporting roof beam when attached to the supporting roof beam and to nest within the vertical mounting channel.