| 摘要 |
<p>An assembled structural beam according to the present invention comprises a top chord and a bottom chord mechanically connected by series of diagonal connecting members. The top chord includes, on an upper surface, a longitudinally extending bolt slot. The bottom chord includes, on a bottom surface, a longitudinally extending bolt slot. Each of the chords have two opposed side surfaces with a shallow channel recess in one side and extending the length of the chord, with a complementary projection on the opposite side and extending the length of the chord sized for receipt in the shallow channel recess. Each chord is an extruded component and includes a securing flange which cooperates with the diagonal connecting members to secure the top chord to the bottom chord. The structural beam is particularly useful in flying forms for concrete forming.</p> |
