Page 355 - Forensic Structural Engineering Handbook

10.42 CAUSES OF FAILURES

(a)

(b)
FIGURE 10.7 Indianapolis Steel Frame. (a) “Orderly line-up” of structural steel framing.
(From Michael A. West, Computerized Structural Design, Milwaukee, WI.) (b) Partially toppled
steel columns. (From Michael A. West, Computerized Structural Design, Milwaukee, WI.)

practice in the industry.) The anchor bolts and piers should have been designed for loads
resulting from erection operations. (It was the steel erector’s responsibility to make this
analysis.)
• In at least one instance the concrete pier was constructed too low, resulting in a relatively
long projection of the anchor bolts. This condition was directly contributing to the collapse.