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IF i need to put 1/2" diameter hole in a channel. An eye-bolt will be installed in that hole for lifting the structure during maintenance operations. The structure is about 700 lbs and it has C6X10.5 channel which is 31" long. Although channel is A-36 material construction, my concern is how much weak it become by putting 1/2" dia. hole in it.
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For the unmodified channel, the worst case stress is about 9,500 psi. Adding the hole raises this to about 14600 psi.  A36 can handle this with ease.
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Monday, April 20, 2009 10:42 AM
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