#structural_member  support that is a constituent part of any structure or building
  supertype:  support.device  any device that bears the weight of another thing; "there was no place to attach supports for a shelf"
  part of:  physical_structure
  subtype:  beam  long thick piece of wood or metal or concrete, etc., used in construction
     subtype:  box_beam__boxbeam__box_girder__boxgirder  a beam built up from boards; has a hollow rectangular cross section
     subtype:  cantilever  projecting horizontal beam fixed at one end only
     subtype:  girder  a beam made usually of steel; a main support in a structure
        subtype:  I-beam  girder having a cross section resembling the letter `I'
     subtype:  header.beam  a framing member crossing and supporting the ends of joists, studs, or rafters so as to transfer their weight to parallel joists, studs, or rafters
     subtype:  lintel__header  horizontal beam used as a finishing piece over a door or window
     subtype:  joist  beam used to support floors or roofs
        subtype:  floor_joist__floorjoist  joist that supports a floor
        subtype:  trimmer_joist__trimmerjoist__trimmer  joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc.
     subtype:  keel  one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability
        subtype:  bilge_keel__bilgekeel  either of two lengthwise fins attached along the outside of a ship's bilge; reduces rolling
     subtype:  keelson  a longitudinal beam connected to the keel of ship to strengthen it
     subtype:  rafter__balk__baulk  one of several parallel sloping beams that support a roof
     subtype:  rider_plate__riderplate  a horizontal beam (or plate) connected to the top of a ship's vertical keel or to the keelson
     subtype:  ridgepole__ridge__rooftree  a beam laid along the ridge of a roof; provides attachment for upper end of rafters
     subtype:  shoring__shore  a beam or timber that is propped against a structure to provide support
     subtype:  tie_beam__tiebeam  a horizontal beam used to prevent two other structural members from spreading apart or separating; "he nailed the rafters together with a tie beam"
     subtype:  timber  a beam made of wood
        subtype:  coulisse  a timber member grooved to take a sliding panel
        subtype:  sternpost  (nautical) the principal upright timber at the stern of a vessel
        subtype:  stringer  a long horizontal timber to connect uprights
        subtype:  two-by-four  a timber measuring (slightly under) 2 inches by 4 inches in cross section
     subtype:  trave__traverse__crossbeam  a horizontal beam that extends across something
  subtype:  bracing__brace  a structural member used to stiffen a framework
     subtype:  crosspiece  a transverse brace
        subtype:  crossbar  long thin horizontal crosspiece between two vertical posts
        subtype:  rundle__spoke  one of the crosspieces that form the steps of a ladder
        subtype:  rung__round__stave  a crosspiece between the legs of a chair
        subtype:  cross_thwart__crossthwart__thwart  a crosspiece spreading the gunnels of a boat; used as a seat in a rowboat
        subtype:  transom__traverse  a horizontal crosspiece across a window or separating a door from a window over it
     subtype:  gusset_plate__gusset  a metal plate used to strengthen a joist
     subtype:  guy_cable__guycable__guy__guyrope  a rope or cable that is used to brace something (especially a tent)
     subtype:  stay.bracing  (nautical) brace consisting of a heavy rope or wire cable used as a support for a mast or spar
        subtype:  backstay  a stay that supports the back of something
        subtype:  forestay  a adjustable stay from the foremast to the deck or bowsprit; controls the bending of the mast
           subtype:  mainstay  the forestay that braces the mainmast
     subtype:  stringer.bracing  brace consisting of a longitudinal member to strengthen a fuselage or hull
     subtype:  strut  brace consisting of a bar or rod used to resist longitudinal compression
     subtype:  railroad_tie__tie__crosstie__sleeper  one of the cross braces that support the rails on a railway track; "the British call a railroad tie a sleeper"
  subtype:  plate.structural_member  structural member consisting of a horizontal beam that provides bearing and anchorage
     subtype:  wall_plate  plate (a timber along the top of a wall) to support the ends of joists, etc., and distribute the load
  subtype:  riser  structural member consisting of the vertical part of a stair or step
  subtype:  sill  structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure
     subtype:  doorsill__doorstep__threshold  the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offer support when passing through a doorway
     subtype:  windowsill  the sill of a window; the horizontal member at the bottom of the window frame
  subtype:  tread  structural member consisting of the horizontal part of a stair or step
  subtype:  upright__vertical  a vertical structural member as a post or stake; "the ball sailed between the uprights"
     subtype:  column.upright__pillar  a tall cylindrical vertical upright
        subtype:  telamon__atla  a figure of a man used as a supporting column
        subtype:  caryatid  a supporting column carved in the shape of a person
        subtype:  newel  the central pillar of a circular staircase
        subtype:  pilaster  a rectangular column that usually projects about a third of its width from the wall to which it is attached
        subtype:  spile__pile__piling__stilt  a column of wood or steel or concrete that is driven into the ground to provide support for a structure
           subtype:  sheet_pile__sheetpile__sheath_pile__sheet_piling__sheetpiling  a pile in a row of piles driven side by side to retain earth or prevent seepage
        subtype:  support_column__supportcolumn  a column that supports a heavy weight
           subtype:  lally_column__lallycolumn__lally  support column consisting of a steel cylinder filled with concrete
     subtype:  jamb  upright consisting of a vertical side member of a door or window frame
        subtype:  doorjamb__doorpost  a jamb for a door
     subtype:  post.upright  upright consisting of a piece of timber or metal fixed firmly in an upright position
        subtype:  bollard__bitt  a strong post (as on a wharf or quay or ship for attaching mooring lines); "the road was closed to vehicular traffic with bollards"
           subtype:  riding_bitt  one of the large bitts used to secure the cable of a dropped anchor
        subtype:  carrick_bitt__carrickbitt  either of a pair of strong posts that support a windlass on a ship's deck
        subtype:  corner_post  a square post supporting a structural member at the corner of a building
        subtype:  gatepost  either of two posts that bound a gate
           subtype:  hinging_post__hingingpost__swingingpost  the gatepost on which the gate is hung
           subtype:  shutting_post  the gatepost against which the gate closes
        subtype:  goalpost  one of a pair of posts (usually joined by a crossbar) that are set up as a goal at each end of a playing field
        subtype:  hitching_post  a fixed post with a ring to which a horse can be hitched to prevent it from straying
        subtype:  hop_pole__hoppole  a tall pole to support the wires on which the hop plant is trained
        subtype:  king_post  post connecting the crossbeam to the apex of a triangular truss
        subtype:  lamppost  a metal post supporting an outdoor lamp (such as a streetlight)
        subtype:  maypole  a vertical pole or post decorated with streamers that can be held by dancers celebrating May Day
        subtype:  newel_post__newelpost__newel  the post at the top or bottom of a flight of stairs; it supports the handrail
        subtype:  queen_post__queenpost  vertical tie post in a roof truss
        subtype:  rudderpost__rudderstock  a vertical post at the forward edge of a rudder that enables the rudder to pivot
        subtype:  stanchion  any vertical post or rod used as a support
        subtype:  standard.post  an upright pole or beam (especially one used as a support); "distance was marked by standards every mile"; "lamps supported on standards provided illumination"
        subtype:  stump.post  (cricket) any of three upright wooden posts that form the wicket
        subtype:  telephone_pole__telephonepole__telegraph_pole__telegraphpole__telegraph_post__telegraphpost  tall pole supporting telephone wires
        subtype:  timber.post  a post made of wood
        subtype:  whipping_post  post formerly used in public to which offenders are tied to be whipped
     subtype:  scantling__stud  an upright in house framing
     subtype:  shaft.upright  upright consisting of the vertical part of a column
     subtype:  stile  an upright that is a member in a door or window frame

No statement uses or specializes structural_member; click here to add one.