Take the 2-minute tour ×  I'm planning a scenario in which my
players, being a crafty lot, may try to destroy a building. Are
there any rules for what it would take to accomplish that? Would
a building have an AC?  share|improve this question  2 Answers 2
up vote 7 down vote accepted  A building would have an AC,
although it would be fairly low. (A city wall was described as
having AC 3 in the online d20 SRD.) More importantly, the walls
of the building can be described as having a certain number of
hit points and a level of hardness dependent on the materials
used to construct it. When figuring the damage from an attack,
reduce it by the material's hardness and apply the rest to the
hit points of the structure's wall. When the wall's hit points
are reduced to zero, it's destroyed.  The rules for Smashing An
Object and Walls will be useful here.  share|improve this answer
Typically, however, given the usual hardness/hp for objects such
as building walls, it's going to take them a while and a lot of
attacks.