Patent ID: 7797905

Claim:
A roofing system, comprising: a truss comprising a top chord and oriented in a first direction; a purlin comprising: a purlin top configured to have a roof panel attached thereto; purlin legs configured to be attached to the truss; and purlin webs connecting the purlin top and the purlin legs, the purlin oriented in a second direction that is substantially perpendicular to the first direction, the legs being in contact with and fastened to the top chord; and a purlin collar comprising: a collar top configured to contact the purlin top; collar legs configured to be attached to the truss; and collar webs connecting the collar top and the collar legs, the purlin collar being placed over a section of the purlin such that the collar top is in contact with the purlin top and the collar legs are in contact with the top chord outside the purlin legs, the collar legs being fastened to the top chord.