NOVELTY - The tower has a main lattice structure formed by main vertical frames (41), and wind-bracings i.e. cross pieces, connecting the main vertical frames with each other. The main vertical frames are made of metal elements folded longitudinally along two folding angles separated by plane central zones (42). Reinforcement parts (40) are fixed directly on central zones (43) of the main vertical frames. The reinforcement parts are selected from plane metal elements and longitudinally folded metal elements. The reinforcement parts have transversal section similar to that of the main vertical frames.    USE - Tower e.g. pylon and mast, for supporting telecommunication and broadcasting devices e.g. TV and electrical energy supplying equipments such as solar panels and wind turbine. Uses include but are not limited to point-to-point telecommunication field, cellular radio communication field, Hertzian radio broadcasting field, TV broadcasting field and energy field.    ADVANTAGE - The reinforcement parts improve the resistance of the lattice structure of the tower against loads and external force such as strong wind, and rigidify the lattice structure for reducing the misalignment of the lattice structure according to the requirements of radio transmission. The main vertical frames and the reinforcement parts facilitate the handling and lifting of the tower. The design of the tower facilitates insertion or replacement of the reinforcement parts without performing the drilling, welding or heavy unit lifting operations. The tower is formed by implementation of lightweight units, so that the tower is formed in a simple and inexpensive manner. The tower can be easily reinforced after erection. The tower has lattice shaped structure, so that the tower is light in weight, self-supportable and quickly erectable in vertical position with less manpower and less number of equipments, without using a crane. The tower is dismountable, and can be tilted from horizontal position to vertical position in a rapid manner.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for installing reinforcement parts on a tower.    DESCRIPTION OF DRAWING(S) - The drawing shows a transversal sectional view of a reinforcement part assembled on a main vertical frame.    Reinforcement parts (40)    Main vertical frames (41)    Plane central zones (42)    Central zones (43)    Lateral zones (44)