A frame structure is one that is made up of a beam, a column, and a slab to withstand lateral and gravitational stresses. These structures are often utilized to resist significant moments caused by applied loading. They are also used in building construction for internal partition walls and for exterior framing. The beam is the main load-bearing component of the frame structure. It should be sufficiently strong to support the anticipated loads on it. The size of the beam depends on the number of people who will be occupying the structure and the weight they will be able to lift. If you expect to carry heavy items up several flights of stairs, then you will need a beam that is at least as large as the staircase. Otherwise, you will not have enough space to place a permanent anchor in the floor to attach the beam to it. Beams can be made of wood or steel. Wooden beams tend to be cheaper but they will require periodic maintenance to prevent them from becoming infested with insects which would weaken the material itself. Steel beams are more durable but they are also more expensive. The column is attached to the back of the beam and extends out from it. It provides additional strength to the beam by taking some of the pressure off of it. There should be an opening in the center of each column through which the beam passes.