Bob which fasten columns, girders or other members to concrete or masonry such as bolts used to anchor sills to masonry foundation. Foundation plates or sills shall be bolted to the foundation with not less than 1/2" diameter steel bolts embedded at least 7" into the concrete or reinforced masonry or 150 into unreinforced grouted masonry & spaced not more than & apart. There shall be a minimum of 2 bolts per piece with one bolt located within 12" of each end piece.