Bell Tower Design

Help. Need reseach data for possible project. Looking for any sort of literature on bell tower design. I'm pretty confident in my joinery decisions, but something about having a couple of hundred lbs. of swinging bronze 50 ft. in the air tells me this is going to require a few second opinions. After all, I might know a couple of folks standing around underneath. Thanks

The biggest concern in bell tower design is the lateral load imposed on the structure by the swinging bells. A horizontal load equal to three times the bell weight is transmitted to the structure at the points of attachment of the bells. Not a small concern, but it has obviously been solved in numerous church steeples.