New Examples online In between the strains: Unreinforced masonry buildings (URMs) are those crafted from brick, mortar or clay and created among the late 1800s and sixties. — Mortar is the binding agent used to keep masonry buildings together. Modern day mortar is usually a combination of Portland cement, sand, http://yellowpagecity.com/US/CA/Irvine/Masonry+Contractors/West+Hills+Masonry/1734624069/