Nein, lediglich gegen Fahrzeuge
Das ist leider falsch.
Siehe Rulebook Abschnitt Buildings.
"
Attacking Buildings
When determining if a building can be targeted by a shooting attack or psychic power,
charged and fought in close combat, or affected by a special rule,
treat the building as a
vehicle unless specifically stated otherwise. When attacking a building, roll To Hit
and for armour penetration as if it were a vehicle. In close combat, buildings are hit
automatically. For example, melta bombs can only be used to attack vehicles in close
combat – they can therefore also be used to attack buildings in close combat. Similarly, a
weapon with the Haywire special rule, which specifically affects vehicles, can also be used
to attack buildings. Note that this does not mean that a weapon or special rule which
specifies that it can only be used against buildings can also be used against vehicles."
Die einzigen Waffen die NICHT gegen Gebäude funktionieren, sind die mit der Grav Sonderregel.