| 摘要 |
A load-bearing structure, said structure comprising a plurality of single elongated chords, the exterior surface of each said chord defining a cross-section, said cross-section having an interior volume, each said chord having an elongated centerline, said structure further including a plurality of elongated cross-members, each of said cross-members having at least a first and a second end, said elongated cross-members cooperating in maintaining said single elongated chords spaced apart by a dimension substantially greater than said cross-section, at least one of said chords having at least one elongated opening in said exterior surface, through which one of said ends enters said volume interior.
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