question about what size anchor bolts , so if you'r doing the job, you should be using 5/8 anchor bolts imbeted inches typically minimal embedment. most contractors are aware of that. talk to an architect, give the contractor specificationings. we want anchor boltings no more than every four or three feet, whatever. tell the contractor what you want. don't let the contractor decide how to put in anchor bolts. i eaten not intending to den great contractors but it is critical. there are two types of bolts , one to prevent the building fro sliding. sometimes you'll see these gigantic things that are hold downs and these prevent the building from overturning or coming up off the foundation. >> rocking. >> from rocking, basically. you see these in all new buildings in almost every case. we can apply these as you'll se in a second to some specific application within existing building. so we'll move along here and what marge did after she had he bolts put in, she had some areas of the garage that were open put plywood up. here we have plywood that the contractor installed using little tiny nails too c