a straight, horizontal or vertical beam usually made of wood, steel, or aluminum bolted or nailed connections usually found in construction projects or buildings, supporting walls or ceilings may have additional braces or supports at either end
crossbeam which is a straight, horizontal or vertical beam crossbeam which has usually made of wood, steel, or aluminum crossbeam which has bolted or nailed connections crossbeam which has usually found in construction projects or buildings, supporting walls or ceilings crossbeam which may have additional braces or supports at either end