Questions Regarding Item Degradation, PClaims, Bell

Hello everyone.
Thanks for the help! Already loving this game.
1. How long do built items remain on the ground without a personal claim? Does it depend on their value, or are all things equal?
2. Does this degradation happen with houses/items in houses? Does it happens slower? Does the house only disappear if the items within have been taken?
3. It looks like a town bell takes up a huge hunk of space. Would this item be ideal for two-three friends to share space and resources? For example, since I know that I tend to be a sprint player (play a lot for a while then take a break for a bit,) if I founded a town with friends and we all shared in keeping up the bell, is that as good a defense as a personal claim? Or do you still need a personal claim within a town in order to build there? The town bell item looks so big in comparison to personal claims, so might it be the best option for this use? How does alting affect the efficacy of town bell vs. personal claims?
Thanks!

1. How long do built items remain on the ground without a personal claim? Does it depend on their value, or are all things equal?
2. Does this degradation happen with houses/items in houses? Does it happens slower? Does the house only disappear if the items within have been taken?
3. It looks like a town bell takes up a huge hunk of space. Would this item be ideal for two-three friends to share space and resources? For example, since I know that I tend to be a sprint player (play a lot for a while then take a break for a bit,) if I founded a town with friends and we all shared in keeping up the bell, is that as good a defense as a personal claim? Or do you still need a personal claim within a town in order to build there? The town bell item looks so big in comparison to personal claims, so might it be the best option for this use? How does alting affect the efficacy of town bell vs. personal claims?
Thanks!