B
Well, it, uh, depending on its moisture content, it either swells up or shrinks, and, uh --
A
Yeah.
B
-- of course the soil right under the slab retains its moisture a lot longer --
A
Uh-huh.
B
-- and so during the dry season you have to water the foundation to keep your foundation from, uh, from, uh, drooping --
A
Uh-huh.