Beam (structure)

A carrier is in civil engineering, a mostly horizontally extending, in proportion to its length, narrower and more slender beam that transfers loads resting on walls or vertical supports. Unlike a bow, a carrier is loaded primarily in bending. Due to the low tensile strength of stone is unsuitable as a material. Demanded are materials with high tensile strength, such as wood, metal or reinforced concrete.

Carrier spanning the wall openings, called falls.

Examples

The Doric, Ionic and Corinthian columns of ancient Greek temples are very tight since stone beams do not allow large spans. At the Parthenon in Athens, the mighty marble beams span a length of only 4 m. The roof itself is made of wood.

Bridge girders

Special support for bridges, which are usually named after their inventor or their form:

  • Fish belly carrier, also Paul carrier ( after Friedrich August von Pauli ), lens carrier or carrier Lohse (after Hermann Lohse ); the so-called Nielsen - Lohse- carrier, however, is the usual Japanese term for a network arch bridge that has neither anything to do with Hermann Lohse with Octavius ​​F. Nielsen.
  • Howe carrier by William Howe
  • Polonceauträger by Camille Polonceau
  • Schwedler carrier by Johann Wilhelm Schwedler
  • Half parabola carrier

Further carriers

  • Bar
  • Beam
  • Binder
  • Rafter
  • Sparrenpfette
  • Purlin
  • Steel profile
  • Wide flange beams
  • Sheet carrier
Euler–Bernoulli beam theory List of the 72 names on the Eiffel Tower
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