What is the reason for designing homes without anchor bolts? I was looking at damage photos from the Lake City, Arkansas tornado and noticed many of the homes with the worst damage did not have anchor bolts, or anything else for that matter—it literally looked the walls were just resting on the cement with nothing to attach them to the foundation. This is so confusing to me as anchor bolts aren’t exactly expensive or difficult to install—I’ve put them in building a shitty shed in my yard. Is there a genuine engineering reason for not using them, or is it just terrible construction?