deusvult |
PRD:
...you can target shatter against a single solid nonmagical object, regardless of composition, weighing up to 10 pounds per caster level. Targeted against a crystalline creature (of any weight), shatter deals 1d6 points of sonic damage per caster level (maximum 10d6), with a Fortitude save for half damage.
So, yes you can damage a door or even a bridge with the spell. Keep in mind the 10 lbs/caster level limit for the target however.. or else it'll be immune to the spell. A wall will usually be out of the question, but flimsier ones inside buildings probably are quite doable. Just don't expect to use the spell for sonic tunnelling through solid rock.