The latest Illustrations on the internet In between the strains: Unreinforced masonry buildings (URMs) are those product of brick, mortar or clay and created between the late 1800s and nineteen sixties. — walls will produce hairline cracks which will permit humidity penetration. From your Cambridge English Corpus Having said that, https://www.bbb.org/us/ca/anaheim/profile/patios-and-decks/west-hills-masonry-inc-1126-172019121