Detailed properly, eaves blocking can maintain shear strength and still provide ventilation.
Q: I recently inspected a home that had 3/8-inch OSB corner bracing. The surface stamp indicated that the strength axis of the panel ran in the long direction (see photo, below). I assume this means the panel should be applied with the long dimension across the studs, yet the builder had installed the long dimension parallel to studs. I called APA to check and was told the stamp only applies for roof sheathing and not to corner bracing. Why is the strength axis important for roof sheathing but not for corner bracing?
Simple fixes for shear wall nailing mistakes
Q: Collar ties don’t seem necessary in attics where the rafters come all the way down to the ceiling joists. Can you remove some of them to create headroom?