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cutting an archway into a load bearing wall

Posted by rob hagerman on March 24th, 2003 06:58 AM
In reply to replacing load bearing wall with beam by Bob on September 30th, 2002 02:54 PM [Go to top of thread]

is there a specific formula to calibrate the size of a support beam? this storey and a half house was constructed in the 50's using a standard truss configuration, the span of the arch is going to be 7 feet and butts into an existing brick chimney which travels through the house to the roof. my question is how big does this beam have to be and is there a ledger or table i consult to determine this?

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