Analysis shows Deflections
still growing
• Engineers increased the # of
1” steel bars from 8 to 16
• Wright angered, claimed the
extra load of the added steel
was the problem
• Later analysis showed that if
they hadn’t doubled the
steel, beams would have
certainly failed
• When wood framework was
removed, 1st floor concrete
terrace sagged 45 mils
instantly and grown up to 8”
in 70 years.
• These cantilevered beams
also carry forces from the
2nd floor terrace
• Some say it is due to the
flaw in construction. They
should have sloped the
terrace upward so that it
would sag into the horizontal
position after settlement