Riga Radio and TV Tower
| Riga Radio and TV Tower | |
|---|---|
Rīgas radio un televīzijas tornis | |
 | |
 | |
| Record height | |
| Tallest in European Union since 2004[1][I] | |
| Preceded by | Fernsehturm Berlin |
| General information | |
| Type | Mixed-use |
| Location | Riga, Latvia |
| Coordinates | 56°55′26″N 24°08′13″E / 56.9240°N 24.1370°E |
| Construction started | 1979 |
| Completed | 1989 |
| Height | |
| Antenna spire | 368.5 m (1,209 ft) |
| Roof | 222 m (728 ft) |
| Technical details | |
| Lifts/elevators | 4 |
| Design and construction | |
| Architect(s) | |
The Riga Radio and TV Tower (Latvian: Rīgas radio un televīzijas tornis) in Riga, Latvia is the tallest tower in the European Union. It was built between 1979 and 1989 with funding from the central government of the Soviet Union. Its highest point reaches 368.5 metres (1,209 ft),† which makes it the third tallest tower in Europe (after the Ostankino Tower at 540 metres (1,770 ft) and the Kyiv TV Tower at 385 metres (1,263 ft)) and the 15th tallest self-supporting tower in the world.
Features
[edit]
There was a restaurant, "Vēja roze" ("Wind Rose"), at the 93-metre (305 ft) level, which was open since the completion of the tower until 2006.[4] There is a public observation platform just above it at 97 metres (318 ft), from which most of the city and surroundings and the Gulf of Riga can be seen.[5][6]
Reconstruction
[edit]Since May 2019, the tower has closed to visitors for about five years for the renovation and expansion of the visitors' area and the adjacent territory under the TV Tower 2.0 project.[7][8] It is planned to re-open in 2024 when there will again be a restaurant and the tower's bomb shelter will open to the public. A 500 kg Foucault pendulum will also be installed. The estimated costs are €40-50 million.[9]
Construction
[edit]The design chosen for the tower was that of Georgian architect Kims Nikurdze.[2] Also credited are Nikolajs Sergijevskis and Viktors Savčenko.[3] Construction materials included dolomite from Saaremaa, Karelian granite, and ironwork that had been prefabricated in Chelyabinsk. The assembly was done by the St Petersburg North-western Ironwork Assembly Trust.[2]
The tower is built on an island called Zaķusala (English: Hare Island) in the middle of the River Daugava, and the base of the tower is located about 7 metres (23 ft) above mean sea level. The tower is built to resist winds up to 44 metres per second (98 mph) without any noticeable vibration[citation needed] with the help of three 9.1-metric-ton (10-short-ton) dampers installed at the 198-metre (650 ft) level.[5] Though seismic activity is rare, the tower was designed to withstand a magnitude 7.5 earthquake.[5] The projected service life of the tower is 250 years.[2]
Bottom section
[edit]The support section of the tower rises the first 88 metres (289 ft), comprising the three pillars that give the tower its unusual appearance, and a central building that contains offices and machine rooms. There are two high-speed sloping elevators, one in the north-east pillar and one in the south-west pillar, that ascend the bottom section in just 42 seconds. The third pillar contains a staircase.[10] It is one of only three "tall" towers in the world that has 3 pillars;[citation needed] the others are the Avala Tower in Belgrade and Žižkov Television Tower in Prague.[citation needed]
Middle section
[edit]The middle section, at 88–222 metres (289–728 ft), contains equipment and a central elevator and is enclosed by panels of COR-TEN, an aluminum-iron alloy.[10]
Top section
[edit]The top section, at 222–368 metres (728–1,207 ft), is a cylindrical structure which supports and contains the various antennas, and is topped by a flagpole. An elevator rises to the machine rooms at the 308-metre (1,010 ft) level, and stairs ascend another 44 metres (144 ft).[5][10]
Operations
[edit]The tower started broadcasting regularly in January 1986, though construction work continued until 1989.[11]
The following television channels are broadcast from the tower:[11]
- Latvian Television 1
- Latvian Television 7
- TV3
- RīgaTV 24
- DVB-T signal (experimental)
The following radio stations broadcast from the tower:[11]
| Frequency | Station |
|---|---|
| 90.0 | Radio SWH Gold |
| 90.7 | Latvijas Radio 1 |
| 91.5 | Latvijas Radio 2 |
| 94.5 | Retro FM |
| 95.8 | Latvijas Radio 6 - Naba |
| 101.8 | Latvijas Kristīgais Radio |
| 103.7 | Latvijas Radio 3 - Klasika |
| 104.3 | European Hit Radio |
| 105.2 | Radio SWH |
| 105.7 | Radio SWH+ |
| 106.8 | Radio TEV |
| 107.2 | Radio Skonto |
| 107.7 | Latvijas Radio 4 - Doma laukums |
There is a DAB+ test on channel 12D.
Additionally, broadcast and two-way communications services are provided for various organizations and government agencies.[11]
See also
[edit]- List of tallest towers in the world
- List of tallest freestanding structures in the world
- List of tallest freestanding steel structures
- Riga LVRTC Transmitter
Notes
[edit]^† Sources vary slightly as to the exact height: The official website shows 368 metres (1,207 ft);[2] Emporis claims the exact equivalent, 1,207.35 feet (368.00 m);[5] Structurae claims 368.5 metres (1,209 ft).[12]
References
[edit]- ^ The tower itself has existed since 1989, but Latvia joined European Union in 2004.
- ^ a b c d e "TV Tornis : Construction/design". www.tvtornis.lv. Archived from the original on 10 February 2012. Retrieved 13 September 2014.
- ^ a b c d Strautmanis, Jānis Krastiņš; Ivars (2002). Lielais Rīgas arhitektūras ceļvedis (in Latvian). Rīga: Puse. pp. 286, 371, 372. ISBN 9789984527611. Retrieved 13 September 2014.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ "TV TOWER'S HISTORY". VAS LATVIJAS VALSTS RADIO UN TELEVĪZIJAS CENTRS. Retrieved 2019-05-27.
- ^ a b c d e "Riga TV Tower, Riga : Building 110997 : EMPORIS". Emporis. Archived from the original on September 14, 2014. Retrieved 13 September 2014.
{{cite web}}: CS1 maint: unfit URL (link) - ^ "TV Tornis : Excursions". www.tvtornis.lv. Archived from the original on 13 September 2014. Retrieved 13 September 2014.
- ^ "TV TOWER 2.0". VAS LATVIJAS VALSTS RADIO UN TELEVĪZIJAS CENTRS. Retrieved 2019-05-27.
- ^ "TOUR ON THE TV TOWER". VAS LATVIJAS VALSTS RADIO UN TELEVĪZIJAS CENTRS. Retrieved 2019-05-27.
- ^ "Television tower to turn into major tourist attraction". Public Broadcasting of Latvia. 2018-09-26. Retrieved 2019-05-27.
- ^ a b c "TV Tornis : Technical information". www.tvtornis.lv. Archived from the original on 10 February 2012. Retrieved 13 September 2014.
- ^ a b c d "Radiostacijas Rīgā". radiomap.eu. Retrieved 13 May 2017.
- ^ "Riga Television Tower (Riga, 1986) : Structurae". structurae.net. Retrieved 14 September 2014.
External links
[edit]
- Project "TV tornis 2.0" at the website of the Latvian State Radio and Television Center (in Latvian)
- Former official homepage in Latvian, English, Russian, German
- Riga Television Tower at Structurae