FOUNDATION / FLOOR DETAIL


Hammer7
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52 minutes ago, Hammer7 said:

is there an industry standard for bearing conditions

For I-joists? Yes. Every I-joist supplier shows a typical bearing condition for I-joists on top of the foundation wall. If you're looking for an industry standard for a foundation condition where the top of the foundation is corbeled, there may be an IRC code reference. There is a code reference for this in the NBC, and what you have drawn would not comply (structural / energy efficiency).

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Perhaps someone more familiar with your regional codes can chime in but this would seem at least somewhat relevant:

 

R404.1.5.2 Concrete wall thickness. The thickness of
concrete foundation walls shall be equal to or greater
than the thickness of the wall in the story above. Concrete
foundation walls with corbels, brackets or other
projections built into the wall for support of masonry
veneer or other purposes are not within the scope of the
tables in this section.
Where a concrete foundation wall is reduced in
thickness to provide a shelf for the support of masonry
veneer, the reduced thickness shall be equal to or
greater than the thickness of the wall in the story above.
Vertical reinforcement for the foundation wall shall be
based on Table R404.1.2(8) and located in the wall as
required by Section R404.1.3.3.7.2 where that table is
used. Vertical reinforcement shall be based on the
thickness of the thinner portion of the wall.
Exception: Where the height of the reduced thickness
portion measured to the underside of the floor
assembly or sill plate above is less than or equal to
24 inches (610 mm) and the reduction in thickness
does not exceed 4 inches (102 mm), the vertical
reinforcement is permitted to be based on the thicker
portion of the wall.

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