Clay Tile Roof

Carl,My wife and I are planning our new house, and hope to start construction in Sept. We both really like the Mediterranean/Florida style homes.We want to incorporate a clay tile roof.I have heard they are very heavy and the framing needs to be beefed up, but I can’t find info on how.Is it by using 2x6 studs instead of 2x4’s?? Or is it in the roof decking?Thanks, I have learned so much from your