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Reply #303: What tipped me off [View All]

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dailykoff Donating Member (1000+ posts) Send PM | Profile | Ignore Thu Jul-13-06 06:07 PM
Response to Reply #302
303. What tipped me off
Edited on Thu Jul-13-06 06:23 PM by dailykoff
was the fact that the NIST report says virtually nothing about how the corner truss joists were supported. At the very least, double joists would be needed at the corners, in both directions, because there were trusses running both ways (primary and bridging). That's eight joist girders.

But in all the NIST drawings and diagrams I've seen, and presumably in their "models," the corner joists just frame into ordinary trusses.

http://wtc.nist.gov/progress_report_june04/appendixb.pd...

edit: there's something else that I want to double-check before posting so stay tuned.
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