| 摘要 |
The carrier for lattice structures, which also forms part of the upper and lower chords and the struts, uses prefabricated sections which can be bolted without changing the holes. A plate is welded to the end surfaces of the struts, to be bolted to the chord, in a positive fit with chord projections fitting into plate grooves. The chords are fitted with threaded drillings to take the screw bolts of construction steel to secure the struts.
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