beams
n. countablen. long, thick pieces of wood, metal, or concrete that support the weight of a building. They are the strong parts that hold up the roof or the floors.
n. long, sturdy structural members used to support a load, typically spanning an opening or supporting a roof or floor. Often made of timber, steel, or reinforced concrete.
The workers lifted the heavy steel beams into place.
During the renovation, the architect decided to leave the original wooden beams exposed to give the room a rustic feel.
The structural integrity of the bridge depends on a series of horizontal beams that distribute the weight of the traffic across the vertical support columns.
Usually used in the plural when referring to the general structure of a building.