Structural support is an important part of any building or structure, and there are several components that can be used to provide it. A TRUSS is a triangular framework of metal or wood that is used to support a roof or bridge. A STRUT is a structural member that is used to resist compressive forces. PILING is a type of foundation that is driven into the ground to provide support for a structure. A PILLAR is a vertical support that is used to hold up a roof or other structure. A BEAM is a horizontal support that is used to span an opening or to support a floor or ceiling. An I-bar is a type of BEAM that has an I-shaped cross section. An I-BEAM is a type of BEAM that has an I-shaped cross section and is used to support heavy loads.