Trussed beams. en Illustration from carpenter book Fig Solid Trussed Beam Fig Flitched Trussed Beam Timber Strut Cast Iron Strut Shackle Fig Timber Strut Fig Cast Iron Strut Fig Shackle or Coupling Link for thightening up the rod Fig End of beam with cast iron shoe taking the end of the rod de Illustration aus einem Zimmermannsbuch