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RE: OSHA 4-Bolt Column Requirements and Pre-Engineered Buildings

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Once the OHSA regulation is put into action any column over 300 lbs (most columns and endposts) will require a minimum of 4 anchor bolts.  Probably will not see much affect on the base plate thickness (at least not thicker).

Greg Effland, P.E.

-----Original Message-----
From: Mark D. Anderson PE [mailto:mark(--nospam--at)]
Sent: Thursday, June 14, 2001 11:26 AM
To: seaint(--nospam--at)
Subject: OSHA 4-Bolt Column Requirements and Pre-Engineered Buildings

Has any one determined how the new OSHA 4-bolt requirement for column anchoring (Federal Register 63:43451-43513) will be applicable to the metal building industry?   Specifically for the primary frames?  Historically, most of these buildings, at least the small to mid-size ones, have a two bolt anchorage, with a light baseplate.
It appears that the MBMA was represented in the proceedings, but I cannot readily see where their products are exempted.
Thank you
Mark D. Anderson  PE
Anchorage, AK