I'm trying to determine which is the preferred method of blocking out a stemwall foundation for garage doors where a slab will be poured in the garage. I've seen it done both ways. Option 1 does not typically block all of the stemwall out and seems to be more common in locations where the frostline is deeper (24" or deeper). Option 2 completely blocks out the stemwall at the garage door and then a thicken edge is poured where the slab meets the footing at the garage door. From a structural point of view which is the better method and also from a construction point of view what are the pros and cons?
Option 1:
Option 2:
View model here:
https://3dwarehouse.sketchup.com/model.html?id=9052ff81-b3c2-4aef-b40a-39a8be9e520b
Option 1:
Option 2:
View model here:
https://3dwarehouse.sketchup.com/model.html?id=9052ff81-b3c2-4aef-b40a-39a8be9e520b