Tents:
class = vehicle
damage = tent
armor = 10
style = structure
map = house

Camonet:
map = fortress
damage = tent
placement = slope
class = house

Fortress / Bunker:
map = fortress
damage = building
placement = slope
class = house

Fences:
map = fence
damage = tree
armor = 300
placement = slopeLandContact or just slope (slopelandcontact needs land contact lod).