Bathroom bolts..

Our bathroom floor rests on two 2x12 inch's pieces of lumber. We used some ramset nails to hold it in place to our concrete walls. These definitely have very good holding power, however I wouldn't rely solely on them to hold up the entire weight of our bathroom floor. So, we purchased eight hilti 3/8 screws meant for concrete embedment. So we have four holding one side and four holding the other side of the floor. The reality is, since our toilet, bidet and sick won't even be on the floor, there isn't much weight to deal with here.