The owner engaged an architect to provide framing plans. The plans called out a ‘wood beam’ to support the 2nd floor where the wall was removed. The builder redesigned the framing on his own authority. The owner noted that the new beam was sagging under dead load plus light furniture load (live load). The owner stated he was concerned because the floor system vibrated when an outside door was closed quickly. The correct beam size and type to adequately and safely support the floor loads from both sides (existing floor and new addition) was a W 10 x 49 steel beam, where W denotes wide flange, 10 is the depth in inches and 49 is the weight in pounds per foot of 1,115 lbs.
Specific framing errors for adding 2nd floor atrium with balcony :
There were numerous structural deficiencies including:
After consulting with the owners the remedy was to: