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2. Guyed mast - Wikipedia

   en.wikipedia.org/wiki/Guyed_mast

   Guyed masts on skyscrapers or wider towers are often guyed on the roof of the free-standing basement structure. In such cases, there is no major constructive difference of the guyed mast to a guyed mast on plain ground, and the construction of the free-standing basement tower does not differ much from a tower of the same height without a mast.

3. List of tallest freestanding structures - Wikipedia

   en.wikipedia.org/wiki/List_of_tallest...

   Tallest free-standing structure west of the Mississippi: 62 Zhoushan Island Overhead Powerline Tie North tower 370 1,214 2010 Lattice tower Transmission tower China Zhoushan Island: Tallest set of electricity pylons in the world.

4. Derrick - Wikipedia

   en.wikipedia.org/wiki/Derrick

   The derrick tower can be a mast or a post with the bottom hinged at the base where all ropes meet. The top of the tower is secured with multiple reeved guys to position the top of the tower to the desired location by varying the length of the upper guy lines. The load is lifted using a pulley system connected to the top of the tower. [2]

5. Crane (machine) - Wikipedia

   en.wikipedia.org/wiki/Crane_(machine)

   A tower crane is usually assembled by a telescopic jib (mobile) crane of greater reach (also see "self-erecting crane" below) and in the case of tower cranes that have risen while constructing very tall skyscrapers, a smaller crane (or derrick) will often be lifted to the roof of the completed tower to dismantle the tower crane afterwards ...

6. List of tallest structures in the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_tallest_structures...

   The second-tallest structure in Nevada is the Moapa Entravision Tower at Moapa, a 426.7 m (1,400 ft) tall guyed TV mast at Moapa erected in 2008, the third-tallest is the 401 m (1,316 ft) tall Moapa Kemp Tower at Moapa, the fourth-tallest is Stratosphere Tower near downtown Las Vegas, which was erected in 1994–96 and reaches 1,149 ft (350 m ...

7. Gin pole - Wikipedia

   en.wikipedia.org/wiki/Gin_pole

   In addition to being used as simple lifting devices in field operations such as construction, logging, loading and unloading boats, and emergency repairs, gin poles are well suited to raising loads above structures too tall to reach with a crane, such as placing an antenna on top of a tower/steeple, and to lift segments of a tower on top of one another during erection.