page_title: Radio masts and towers
section_title: Steel lattice
hierarchical_section_title: Radio masts and towers / Materials / Steel lattice
caption_attribution_description: English: Russian TV tower (Penza) Русский: Российская телебашня (Пенза)
context_page_description: Radio masts and towers are, typically, tall structures designed to support antennas for telecommunications and broadcasting, including television. There are two main types: guyed and self-supporting structures. They are among the tallest human-made structures. Masts are often named after the broadcasting organizations that originally built them or currently use them.
  In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna.
context_section_description: The steel lattice is the most widespread form of construction. It provides great strength, low weight and wind resistance, and economy in the use of materials.  Lattices of triangular cross-section are most common, and square lattices are also widely used. Guyed masts are often used; the supporting guy lines carry lateral forces such as wind loads, allowing the mast to be very narrow and simply constructed.
  When built as a tower, the structure may be parallel-sided or taper over part or all of its height. When constructed of several sections which taper exponentially with height, in the manner of the Eiffel Tower, the tower is said to be an Eiffelized one. The Crystal Palace tower in London is an example.
caption: Russian TV tower, Penza
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