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View Full Version : Corrections for Messina Tower ( http://skyscraperpage.com/cities/?buildingID=2723 )


Alpha
Mar 21, 2007, 4:43 PM
There are two such towers. One on Sicilia at Torre Faro, a part of Messina (sometimes it is also named "Torre Faro", but this designation may be incorrect) and one on the Italian mainland at Cannitello, a part of San Giovanni . Both are standing on a cross of reinforced concrete with a height of 12 metres (from which 4 metres are burried into ground) and a span of 50 metres.
The cross of the tower on Sicilia is made on 4 caissons, which run into the ground to a depth of 18 metres to a sandstone level, which is able to carry its weight.

Interesting is, that the edges of the pylons forms a 45 degree angle with the track of the conductors. This allow a bit more economic design and was also used by "Elbekreuzung 1" in Germany ( http://skyscraperpage.com/cities/?buildingID=58846 ).

The basement cross of the tower on the Calabrian site is done directly on the rocks. It is situated 165 metres avobe sea level.

The crossbar is 200 metres above the basement ( respectively 208 metres, when one adds the height of the concrete basement). Their total height is 224 metres without and 232 metres with their basement.

After completion the oscillation periode of the towers, which are in a seismic active region was tested by using rockets. 3 rocketts with a trust of 9800 kN were mounted at their top and afterwards ignited.
The measured elongation was 7.5 centimetres and the oscillation period 2.62 seconds instead of 2.5 seconds as calculated.
( Unfortunately no pictures or movies of this test are available!)

The span width between the two pylons is 3646 metres, the height of conductors was 70 metres at lowest point. As conductors single steel-aluminium conductors with a steel cross section of 305 mm * mm and an Aluminium cross section of 45 mm *mm were used.
The powerline was a 220 kV three phase line with two circuits. The crossbar carryed 4 conductors. The other two conductors were mounted on the diagonal crossbars under their top.

In 1994 the powerline was replaced by a 6.5 kilometre long submarine three phase cable, as because of the long span distance and the required clearance of 70 kilometres conductor ropes with high steel portions had to be chosen for the desired strength.
However steel is a worse conductor than Aluminium, this limited enormous the maximum current of the powerline ( good tip. Compare the technical parameters of former Messina Strait overhead line with similiar existing powerline crossings on http://www.pbpower.net/inprint/articles/critical/critical.pdf . You find
there no such large span width. Note: Of course, there are larger spans. The largest span is that over Amralik Fjord in Greenland with 5376 metres, http://en.wikipedia.org/wiki/List_of_spans . But these span uses small towers standing on high mountains and so long distances are no problem there).

The towers are now used for meteorological measurements, which are used among for planning the bridge over Messina Strait ( http://www.strettodimessina.it/CentroMeteo-e.html ) and today under monumental protection.

Sources: http://it.wikipedia.org/wiki/Piloni_di_Messina
Book source: Drechsel, Walther Turmbauwerke, Bauverlag GmbH, Wiesbaden (Germany)


Request for Villa San Giovanni
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City Name: Villa San Giovanni
Native Name:
State/Province: Calabria
Country: Italy
Population: 13.084
Population Source & Year: http://it.wikipedia.org/wiki/Villa_San_Giovanni ( 2004 )
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LMich
Mar 21, 2007, 10:35 PM
I don't understand what you want me to do. When you post a correction, it has to be clear and concise. This is neither of the two.

Alpha
Mar 22, 2007, 10:33 AM
As this correction consists of a correction and a building and city request, I wrote it better in form of a request

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Official sources: http://skyscraperpage.com/cities/?buildingID=2723
Unofficial sources: Drechsel, Walther Turmbauwerke, Bauverlag GmbH, Wiesbaden (Germany), http://www.strettodimessina.it/CentroMeteo-e.html , http://it.wikipedia.org/wiki/Piloni_di_Messina


Building Name: Messina Tower
Native Name: Pilone di Torre Faro
Other Names: Messina Pylon, Torre Faro
Address: Torre Faro
City: Messina
Postal Code:
State/Province: Sicilia
Country: Italy
Official Building Website URL:
Skyscrapers.com (Emporis.info) URL:
Architect:
Interesting Facts/Records (in own words): This tower was together with its twin on the Calabrian site of Messina Strait ( mentioned below) at time of built, tallest electricity pylon on the world. It stands on a 12 metre tall cross-shaped basement founded on 4 caissons, which lead down to a depth of 18 metres. The basement itsself is 4 metre deep buried into ground.

It carried a 220kV three phase AC powerline with 6 conductors over Messina Strait. The span width was 3646 metres. As conductors single conductors consisting of steel and aluminium with a cross section of 350 square milimetres were used. Hereby the cross section of
steel part was 305 square milimetres and that of aluminium 45 square milimetres.

On the crossbar 4 conductors were mounted. The both remaining conductors were mounted under the diagonal tops, which carried the ground conductors on their top.

After its completion for measurements of its oscillation periode 3 rockets with a trust of 9800 kN were mounted at its top and afterwards ignited.
The measured elongation was 7.5 centimetres and the oscillation period 2.62 seconds instead of 2.5 seconds as calculated.

In 1994 the span was replaced by a 6.5 kilometre long submarine cable for 380kV. The tower is today usec for meteorological measurements. It is now as landmark under monumental protection and illuminated at night.


Heights--

PLEASE PROVIDE SOURCES FOR HEIGHTS, OTHERWISE WE WILL ASSUME THEY ARE ESTIMATES.
- antenna: 232 metres
- spire:
- roof: 8 metres
- top floor:
- other heights: Height of crossbar: 208 metres
Roof is the height of the concrete basement.

Current Building Status (Built, Proposed, Canceled, Destroyed, etc...): Built

Construction Dates--
- started: 1956
- finished: 1957
- destroyed:


Above ground floors:
Below ground floors:
Floor-to-floor height:
Gross Floor area:
Elevator count:
Unit count: 1

Structure Type(s): Tower
Building Use(s): Electrical, Science, Monument
Building Style(s):
Building Materials: Steel

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Official sources:
Unofficial sources: Drechsel, Walther Turmbauwerke, Bauverlag GmbH, Wiesbaden (Germany), http://www.strettodimessina.it/CentroMeteo-e.html , http://it.wikipedia.org/wiki/Piloni_di_Messina


Building Name: Cannitello Tower
Native Name: Pilone di Cannitello
Other Names: Pylon of Messina Strait Powerline crossing on Italian Mainland
Address: Cannitello
City: Villa San Giovanni
Postal Code:
State/Province: Calabria
Country: Italy
Official Building Website URL:
Skyscrapers.com (Emporis.info) URL:
Architect:
Interesting Facts/Records (in own words): This tower was together with its twin at Torre Faro ( mentioned above) at time of built, tallest electricity pylon on the world. It stands on a 12 metre tall cross-shaped basement, which is founded directly on the rocks, 165 metres above sea level. The basement itsself is 4 metre deep buried into ground.

It carried a 220kV three phase AC powerline with 6 conductors over Messina Strait. The span width was 3646 metres. As conductors single conductors consisting of steel and aluminium with a cross section of 350 square milimetres were used. Hereby the cross section of
steel part was 305 square milimetres and that of aluminium 45 square milimetres.

On the crossbar 4 conductors were mounted. The both remaining conductors were mounted under the diagonal tops, which carried the ground conductors on their top.

After its completion for measurements of its oscillation periode 3 rockets with a trust of 9800 kN were mounted at its top and afterwards ignited.
The measured elongation was 7.5 centimetres and the oscillation period 2.62 seconds instead of 2.5 seconds as calculated.

In 1994 the span was replaced by a 6.5 kilometre long submarine cable for 380kV. The tower was used afterwards for exercise of high altitude rescue units. It is now as landmark under monumental protection.


Heights--

PLEASE PROVIDE SOURCES FOR HEIGHTS, OTHERWISE WE WILL ASSUME THEY ARE ESTIMATES.
- antenna: 232 metres
- spire:
- roof: 8 metres
- top floor:
- other heights: Height of crossbar: 208 metres
Roof is the height of the concrete basement.

Current Building Status (Built, Proposed, Canceled, Destroyed, etc...): Built

Construction Dates--
- started: 1956
- finished: 1957
- destroyed:


Above ground floors:
Below ground floors:
Floor-to-floor height:
Gross Floor area:
Elevator count:
Unit count: 1

Structure Type(s): Tower
Building Use(s): Electrical, Monument
Building Style(s):
Building Materials: Steel

------------------------
------------------------
City Name: Villa San Giovanni
Native Name:
State/Province: Calabria
Country: Italy
Population: 13.084
Population Source & Year: http://it.wikipedia.org/wiki/Villa_San_Giovanni ( 2004 )
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