Partially guyed tower
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Partially guyed towers are tower structures, which consist of a free-standing basement, in most cases of concrete or of lattice steel with a guyed mast on the top. The anchor basements of the guyed mast can there be on the top of the tower or on the ground.
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[edit] Use
Partially guyed towers can be used e.g. when a very high tower for FM- and TV-transmission is required, which should also carry antennas for directional radio services in a much lower height. In this cases the antennas for directional radio services are mounted on the top of the free-standing part of the tower, while the guyed mast on its top carry the FM- and TV-antennas. They can be also used in order to upgrade small stable towers (like watertowers) with a long antenna mast for FM- and TV-broadcasting. However their use is rarely and obviously only in some countries of Europe done.
[edit] Partially guyed tower with anchor basements on the top of free-standing tower
Guyed masts on skyscrapers or thicker towers are often guyed on the roof of the free-standing basement structure. In this case 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 the mast on the top. The guyed mast of such constructions is usually less tall than the free-standing basement tower.
[edit] Partially guyed tower with anchor basements on the ground
Much more rarely and interesting under constructive details are partially guyed towers at which at least one basement of the guy anchors is on the ground. At such structures, the guyed mast on the top is in opposite to guyed towers with anchor basements on the top of free-standing tower much taller (in most cases taller than the basement tower) and it must be considered at its construction and maintenance, that the basement of the guyed mast is situated much more elevated than that of the anchor basements.
Partially guyed towers with basements on the ground.
| Tower | Year | Country | Town | Pinnacle height | Remarks |
|---|---|---|---|---|---|
| Gerbrandy Tower | 1961 | Netherlands | Lopik | 375 m | |
| Zendstation Smilde | 1959 | Netherlands | Smilde | 303.5 m | |
| TV Tower Brest - Roc Trédudon | 1974 | France | Roc Trédudon | 220 m | lattice tower as basement |
| Telecommunication Tower Arhus | 1956 | Denmark | Arhus | 216.1 m | |
| Brudaremossen masts | 1980 | Sweden | Gothenburg | 172 m | |
| Sendeturm Dobratsch | 1971 | Austria | Dobratsch Mountain | 165 m | |
| Waldenburg TV Tower | ? | Germany | Waldenburg | 145 m | antenna mast will be dismantled in 2008 |
| Sendeturm Jauerling | 1958 | Austria | Jauerling | 141 m | lattice tower as basement |
| Transmitter Geiersberg | ? | Germany | Geiersberg | 124 m | lattice tower as basement |
| Transmission Tower Lindenfels | ? | Germany | Lindenfels | 122 m | lattice tower as basement |
| Transmitter Boppard | ? | Germany | Boppard-Fleckertshöhe | 121 m | lattice tower as basement |
| Makarki Directional Radio Tower | ? | Poland | Makarki | 120 m | lattice tower as basement |
| Transmission Tower Hesselberg | ? | Germany | Hesselberg | 119 m | lattice tower as basement |
| Coburg-Eckardtsberg Radio Tower | ? | Germany | Coburg | 68 m | prefabricated concrete tower as basement |
| Old TV-Tower Inselberg | 1939 | Germany | Inselsberg Mountain | 43.31 m | aerial mast removed |
| Windisch Bleiberg Transmission Tower | ? | Austria | Windisch Bleiberg | ? | |
| Campobasso Transmitter | 1959 | Italy | Campobasso | ? | mast radiator on castle |
| Transmission Tower Tokaj | 1960 | Hungary | Tokaj | ? | |
| Hegyhatsal TV Tower | ? | Hungary | Hegyhátsál | ? |
Not considered as partially guyed towers are guyed mast radiators, which stand on the top of the helix building, because the helix building is much smaller than the mast radiator on it. Such constructions are for example the main transmission mast of transmitter Mühlacker at Mühlacker, Germany and the main transmission mast of transmitter Ismaning at Ismaning, Germany.
