MENG 210

Homework Solutions:
These are MSWord files, about 5MB each--download before opening is suggested. 

Here is the "Big Blue" crane accident story:

A primary cause of the accident was wind loading (a ~26mph gust) on the
roof structure and crane boom, which caused a large moment about the
base of the structure.  The base of the crane was rated for 20mph wind
moments.  Also, the soil was too soft to keep the base directly upright,
which caused the moment to increase further as the tipping started (I'll
discuss in class). 

Aftermath pictures:

A summary of the accident is here, in the section "Miller Park":

Here are some pictures of an older Lampson LTL-1500 (as used in class):

Here is an article on the Milwaukee Big-Blue, as it was being installed: