the leaners were for poly if it got cold. The ones that wher in the trench were very strong 2'' staging plank. The second floor floor joist were all doubled up as they cantilevered over the poch wall by 4'. We also installed a lvl up inside the poch ceiling which spanned the length.
The reason I doublled up on the joist was because they were crowning up in the living room from the 4 ft.cantilever for 100 years...also incresed the headers over the window and drs.
been around a bit...when a plank is not bowing nor springy and the weight is lifting it's gd. i.e.there is no weight out there to speak of!
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