| 摘要 |
A structure comprising at least two structural members (10) and a purlin (12) supported by and extending between the structural members (10) and connected thereto by cleats (13), one fixed to each of said two structural members (10), wherein the purlin (12) comprises a cold rolled section having a pair of spaced side-by-side generally parallel opposed flanges (15a, 15b), each having an inturned lip (16a, 16b) at one edge and the flanges (15a, 15b) being interconnected by a web part (17) at their other edges, the web part (17) comprising a median portion (18) perpendicular to the flanges (15a, 15b) and connected by inclined portions (19a, 19b) to edge portions (20a, 20b) of the web (17) which are connected to the flanges (15a, 15b) to extend perpendicular thereto, and the purlin (12) is connected to the cleats (13) by fasteners (21) engaged with the edge web portions (20a, 20b) of the purlin (12). |
