I did not put steel plates or anchor bolts in the slab prior to pouring it. Our project in somewhat unusual in that the frame will be raised and then the exterior walls will be completed with Amvic ICFs rather than the usual SIPS panels. The frame will be attached to the walls with HB DW-10HS slip anchors commonly used to attach wood or steel framing to masonry. The foundation walls were also constructed with the ICF blocks and are protruding about 8" above the level of the slab right now. We were planning on just using anchor plates attached to the slab with tapcons.

Harry