| 摘要 |
<p>A metal building includes a joist system having upper and lower longitudinally extending chords (12, 24) and a plurality of web members (30) between the chords. Each of the chords includes an upper chord segment (14), opposed parallel side walls (16), inwardly extending lower chord segments (18) which are parallel to the upper chord segment, and a pair of flanges (20) extending downwardly from the innermost edges of lower chord segments. The chords have a longitudinally extending continuous web receiving aperture (22) with the web receiving aperture of the upper and lower chords being positioned in opposed relationship. A plurality of web members (30) extend between the chords and received within the web receiving apertures of the upper and lower chords. A saddle (40) is provided for positioning joists upon a structural member.</p> |
