building code provisions were supposedly violated in
the Design of the WTC.
Up until recently the NYC building code structurally
was out of date and an embarrassment. The code
minimum wind loads, which typically govern tall
buildings, were inadequate. The reason that there are
not more structural problems is that the engineers
designing the tall buildings had wind tunnel studies
and followed national standards.
I do not personally know what was the regulatory
climate when the WTC was constructed but my
understanding is that there is no structural plan
check in NYC. Apparently the system was so
bureaucratic and corrupt that they gave up and left it
to the design professional to self certify the design.
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