This Standard covers floor, area, adjustable floor, andtrench drains that are used inside of, or outside andimmediately adjacent to, building structures. ThisStandard specifies design requirements, definitions,nomenclature, outlet types and connections, grate-freeareas, top-loading classifications, materials, and finishes.Seam-welded, socket-type, stainless steel fabricateddrains are covered in ASME A112.3.1.