How do walls work in Warhammer 40k?

I've recently come across a Stronghold for Warhammer 40k. Me and my brother were curious as to how the wall works? How would we go about destroying it?How do walls work in Warhammer 40k?
Assuming you are dealing with the tabletop game...



Every building type in 40k has a corresponding cover save value and in the case of a full-fledged building, an armor value. IE, a bunker yields a 3+ cover to models inside. Or you could shoot the building like you would any vehicle to try and explode it and eject the squads inside.



If its just a wall, it shouldn't be destructible, and yields a 4+ cover save generally. The same as any generic terrain on the board or building ruins.



I cant tell you the exact page, but there is a chart in the rule book with all of the specifics for just about everything if you look for it.

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