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ManiAzeri
17 yıl önce - Sal 25 Ekm 2005, 10:00



tuncay1975
17 yıl önce - Sal 25 Ekm 2005, 11:24



Patron
17 yıl önce - Sal 25 Ekm 2005, 11:58

Alıntı:
bu kadar uzun binalar betonarme yapılmaz

Dünyanın en yüksek ikiz gökdelenleri Petronas betonarme.



Alıntı:
"The structure is high-strength concrete, a material familiar to Asian
contractors and twice as effective as steel in sway reduction. Supported
by 75-by-75-foot concrete cores and an outer ring of widely-spaced super
columns, the towers showcase a sophisticated structural system..."

http://www.skyscraper.org/TALLEST_TOWERS/t_petronas.htm


Alıntı:
PETRONAS TWIN TOWERS – AN ENGINEERING MARVEL 'dan alıntı

"Use of concrete rather than steel Designing the superstructure of a building presents another set of challenges. Among the first decisions facing the structural engineers was the choice between steel and concrete. Although the tallest skyscrapers are steel structures, that material was not readily and cheaply available in Malaysia. Imported steel would be very expensive. Hence, economically, cement made more sense. Furthermore, steel buildings tend to be more flexible than concrete and sometimes have to be fitted with mechanical devices known as tuned mass dampers to ameliorate the effects of vibrations induced by the wind. Concrete structures, on the other hand, while they tend to be stiffer and have qualities that self damp out quickly any vibrations that do begin, often are bulkier-looking than steel skyscrapers. Since the architect wished the Petronas towers to be slender-looking and have columns spaced rather far apart, conventional concrete columns would have been too aesthetically broad and structurally heavy. To overcome this objection, an extremely high-strength concrete was developed, with bearing capacities as many as three times that of conventionally used concrete used anywhere in the world.

The pinnacles Being made of high-strength concrete, the columns around the periphery of the towers could be smaller in diameter and lower in mass, thus reducing their deadweight. Still, at the base of the towers, the columns are nearly eight feet in diameter. The towers are not purely concrete structures, however, and the floor beams spanning between each building’s core and ring columns are made of steel. This was done to speed construction, minimize the floor height, and better accommodate such mechanical equipment as cooling ducts."



World Trade Center da betonarme olsaydı yıkılmazdı...


www.sercan.de
17 yıl önce - Sal 25 Ekm 2005, 13:39



Kazandibi
17 yıl önce - Sal 25 Ekm 2005, 16:04

Alıntı:
Binanın 300 metre yükseklikte bir fikir projesi olduğunu’ belirten Topbaş, ‘Bölgede 3 emsal öngörülüyor. Söz konusu arsa üzerinde 146 bin metrekare inşaat hakkı var. Bu hak yatay kullanılarak değişiklikler yapılabilir.’


Alıntı:
Arsaya yapılacak toplam inşaat alanının 138 bin metrekare olduğunu belirten Topbaş, ancak kaç metre yükseklik olacağının kesin netleşmediğini söyledi.


Tercumesi su:

3 farkli proje var.

Lowest Common Denominator: 300 metre

(i.e. en az 300 metre)

Gerci Topbas'in sozune pek guvenmemek lazim. Baksaniza, ayni basin toplantisinda iki farkli toplam insaat alani (138 bin ve 146 bin) vermis.

Zaten rivayete gore Belediye'de olup bitenlerden en son onun haberi oluyormus.



www.sercan.de
17 yıl önce - Sal 25 Ekm 2005, 16:13



ilhan
17 yıl önce - Sal 25 Ekm 2005, 18:11



Yakup

17 yıl önce - Sal 25 Ekm 2005, 19:44



www.sercan.de
17 yıl önce - Sal 25 Ekm 2005, 23:47



www.sercan.de
17 yıl önce - Çrş 26 Ekm 2005, 00:57



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ANA SAYFA -> İSTANBUL - Haberler ve Sohbet