If you'll place a wind trap, for example, on a 2x2 piece of concrete and the passable part will be on plain rock the wind trap will have 100% health cause it was built on concrete.
(you; 'll place; a wind trap) (the passable part; will be; on plain rock) (it; was built; L:on concrete)
you the passable part it
'll place will be was built
a wind trap
on plain rock
L:on concrete