Editing Petronas Towers (section)

===Skybridge===
The towers feature a double decker [[Skyway|skybridge]] connecting the two towers on the 41st and 42nd floors, holding the record for the highest 2-story bridge in the world.<ref>{{Cite book |last=Frankham |first=Steve |url=https://archive.org/details/isbn_9781906098117/page/68 |title=Malaysia and Singapore |date=2008 |publisher=Footprint Travel Guides |isbn=978-1-906098-11-7 |location=Bath |page=[https://archive.org/details/isbn_9781906098117/page/68 68] |url-access=registration}}</ref>  The skybridge also functions as a crucial design feature facilitating movement between the two towers during high winds.<ref>{{Cite book |last=Moskal |first=Greg |title=Modern Buildings: Identifying Bilateral and Rotational Symmetry and Transformations |date=2004 |publisher=i Rosen Classroom |page=26 }}</ref> The bridge is {{convert|170|m|ft|0|abbr=on}} above the ground and {{convert|58.4|m|ft|0|abbr=on}} long, weighing 750 tons.<ref>{{Cite book |title=Structural Health Monitoring 2005: Advancements and Challenges for Implementation |date=2005 |publisher=DEStech Publications |isbn=1-932078-51-7 |editor-last=Chang |editor-first=Fu-Kuo |location=Lancaster, Pennsylvania |page=270}}</ref> The same floor is also known as the podium, since visitors going to higher levels have to change elevators here. Dynamic analyses were performed and iterated to support the final design by studying the structural behavior of the twin towers to time-varying loads such as earthquakes and wind.<ref>{{Cite web |last=Chalhoub |first=Michel Soto |url=http://parsons.com |title=Dynamic Analysis and Design of KLCC Twin Towers for Seismic and Wind Loads |date=1990 |website=Parsons Engineering Library}}</ref>{{failed verification|date=August 2023}} The skybridge is open to all visitors, but tickets are limited to about 1,000 people per day, with around half available to be purchased online, and the other half obtained on a first-come, first-served basis. Petronas began selling tickets in 2010, eliminating free visits. Visitors can choose to opt for package one which is just a visit to the skybridge or go for package two to go to the skybridge and all the way to level 86.<ref>{{Cite web |date=25 October 2010 |title=The Petronas Towers Skybridge |url=http://www.thepetronastowers.com/petronas-skybridge/ |archive-url=https://web.archive.org/web/20091107213544/http://www.thepetronastowers.com/petronas-skybridge/ |archive-date=7 November 2009 |access-date=2 December 2010 |website=ThePetronasTowers.com }}</ref> Visitors are only allowed on the 41st floor as the 42nd floor can only be used by the tenants of the building.<ref>{{Cite book |last1=Rowthorn |first1=Chris |title=Borneo |last2=Cohen |first2=Muhammad |last3=Williams |first3=China |date=2008 |publisher=Lonely Planet |location=Footscray, Victoria |page=71}}</ref>

The skybridge also acts as a safety device, so that in the event of a fire or other emergency in one tower, tenants can evacuate by crossing the skybridge to the other tower.<ref>{{Cite journal |last1=Wood |first1=A. |last2=Chow |first2=W. K. |last3=McGrail |first3=D. |date=2005 |title=The Skybridge as an Evacuation Option for Tall Buildings for Highrise Cities in the Far East |journal=Journal of Applied Fire Science |volume=13 |issue=2 |pages=113–124 |doi=10.2190/1417-hh0k-1w74-170r |hdl-access=free |hdl=10397/19843}}</ref> The total evacuation triggered by a bomb hoax on 12 September 2001 (the day after the [[September 11 attacks]] destroyed the twin towers of the World Trade Center in New York City) showed that the bridge would not be useful if both towers need to be emptied simultaneously, as the capacity of the staircases was insufficient for such an event.<ref>{{Cite news |date=12 September 2001 |title=World's Tallest Towers in Malaysia Evacuated After Threats |work=People's Daily |url=http://en.people.cn/english/200109/12/eng20010912_80048.html |access-date=16 February 2022}}</ref> Plans thus call for the lifts to be used if both towers need to be evacuated, and a successful drill following the revised plan was conducted in 2005.

There is a two hinged arch that supports the skybridge with arch legs, each {{Convert|51|m}} long, that are bolted to level 29 of each of the towers.<ref name="Petronas">{{Cite web |title=The Petronas Twin Towers Official Website |url=http://www.petronastwintowers.com |access-date=29 March 2012 |website=Petronas Twin Towers}}</ref> After being constructed on the ground, the skybridge was lifted into place on the towers over a period of three days<ref name="Academic Search Premiere">{{Cite magazine |last=Wheeler |first=Mark |date=May 1996 |title=The World's Tallest Building |url=https://books.google.com/books?id=MWUEAAAAMBAJ&pg=PA78 |magazine=[[Popular Mechanics]] |pages=78–81 |via=Google Books}}</ref> in July 1995.<ref name="Petronas" /> Residing on the 41st and 42nd floors, the skybridge connects a conference room, an executive dining room and a prayer room.<ref name="Academic Search Premiere" />

<gallery widths="200" heights="200" class="center">
File:Skybridge petronas twin towers kl.jpg|A [[Skyway|skybridge]] connects the two towers
File:SkyBridge.JPG|An inside view of the skybridge
File:KLCC skybridge view.jpg|View to the northwest from the Petronas Towers skybridge, including the shadow of Tower 1 and the skybridge, and the [[Public Bank Berhad]] building
</gallery>