48m Telecommunication tower
The lattice tower studied is 51m high and is square in plan. The tower is divided in three (3) parts. The first part from the basis up to 24m has trapezoidal shape, the second part between 24 and 48m rectangular shape, while the top part from 48 to 51m triangular shape. The tower has horizontal diaphragms every three (3) meters along its height. It also includes five working platforms at heights of 12, 24, 42 and 45m. In the middle of the tower run a ladder and a waveguide rack for the cables of the antennas and are supported by the horizontal diaphragms. The main structural members, legs and bracing elements, are composed of angle cross sections, while the members of the diaphragms and platforms of channel sections. The bracing pattern is composed of primary and secondary bracing members. All connections between members are bolted. The profiles are hot-dip galvanised and painted. The main loading condition is wind loading, while self-weight constitutes a very small part of the design load for legs and bracing members compared to the total loading. This type of tower is widely used by major telecommunication companies in Greece. For this reason, the estimation of risk of the aforementioned towers will refer to potential sites of installation in Greek territory
