The width of the humped area appears to correspond with the length between joist ends, just over 12"
The gap between subfloor and blocking is not uniform, but in all cases I could slide a 1/16" width metal ruler through.
Joists are toe-nailed to the beam, and occasionally single nailed to each...
I recently inspected a newly built (2024) home with a significant "hump" in the first floor flooring above the centerline beam. The hump is approximately 1/8" over 1' approaching the beam. This condition appears to be built into the framing, as a raised tile line exists in the bathroom above the...