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CTLGroup
CTLGroup is an engineering, architecture, and materials science firm that provides engineering, testing and scientific services in the following markets: Building & Facilities; Emergent Solutions; Energy & Resources; Litigation & Insurance; Materials & Products; and Transportation. Its staff includes professionals from the fields of civil, structural, mechanical engineering, architecture, geology, chemistry, ceramics and materials science. Serving clients from around the globe, CTLGroup maintains corporate offices and laboratories in Chicago (Skokie, Illinois) and Doha, State of Qatar and consulting offices in New York City, New York City, New York; Austin, TX; Bradenton, FL; and Washington, DC. Services for clients in New York, Michigan, and North Carolina are provided through CTL Engineers & Construction Technology Consultants. Background CTLGroup began in 1916 as the research and development laboratory for the Portland Cement Association (PCA), which had recently moved to Chicag ...
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CTLGroup Logo 2010
CTLGroup is an engineering, architecture, and materials science firm that provides engineering, testing and scientific services in the following markets: Building & Facilities; Emergent Solutions; Energy & Resources; Litigation & Insurance; Materials & Products; and Transportation. Its staff includes professionals from the fields of civil, structural, mechanical engineering, architecture, geology, chemistry, ceramics and materials science. Serving clients from around the globe, CTLGroup maintains corporate offices and laboratories in Chicago (Skokie, Illinois) and Doha, State of Qatar and consulting offices in New York City, New York City, New York; Austin, TX; Bradenton, FL; and Washington, DC. Services for clients in New York, Michigan, and North Carolina are provided through CTL Engineers & Construction Technology Consultants. Background CTLGroup began in 1916 as the research and development laboratory for the Portland Cement Association (PCA), which had recently moved to Chicag ...
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Burj Khalifa
The Burj Khalifa (; ar, برج خليفة, , Khalifa Tower), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. It is known for being the world’s tallest building. With a total height of 829.8 m (2,722 ft, or just over half a mile) and a roof height (excluding antenna, but including a 242.6 m spire) of , the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009, supplanting Taipei 101, the previous holder of that status. Construction of the Burj Khalifa began in 2004, with the exterior completed five years later in 2009. The primary structure is reinforced concrete and some of the structural steel for the building originated from the Palace of the Republic in East Berlin, the former East German parliament. The building was opened in 2010 as part of a new development called Downtown Dubai. It was designed to be the centerpiece of large-scale, mixed-use development. ...
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Collapse Of The World Trade Center
The collapse of the World Trade Center occurred during the terrorist attacks of September 11, 2001, after the Twin Towers were struck by two hijacked commercial airliners. One World Trade Center (WTC 1, or the North Tower) was hit at 8:46 a.m. Eastern time and collapsed at 10:28 a.m. Two World Trade Center (WTC 2, or the South Tower) was hit at 9:03 a.m. and collapsed at 9:58 a.m. The resulting debris severely damaged or destroyed more than a dozen other adjacent and nearby structures, ultimately leading to the collapse of 7 World Trade Center at 5:21 p.m. A total of 2,763 people were killed in the crashes, fires, and subsequent collapses, including 2,192 civilians, 343 firefighters, and 71 law enforcement officers as well as all the passengers and crew on the airplanes, which included 147 civilians and the 10 hijackers. In September 2005, the National Institute of Standards and Technology (NIST) published the results of its investigation into the ...
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Austin, TX
Austin is the capital city of the U.S. state of Texas, as well as the seat and largest city of Travis County, with portions extending into Hays and Williamson counties. Incorporated on December 27, 1839, it is the 11th-most-populous city in the United States, the fourth-most-populous city in Texas, the second-most-populous state capital city, and the most populous state capital that is not also the most populous city in its state. It has been one of the fastest growing large cities in the United States since 2010. Downtown Austin and Downtown San Antonio are approximately apart, and both fall along the Interstate 35 corridor. Some observers believe that the two regions may some day form a new "metroplex" similar to Dallas and Fort Worth. Austin is the southernmost state capital in the contiguous United States and is considered a " Beta −" global city as categorized by the Globalization and World Cities Research Network. As of 2021, Austin had an estimated populatio ...
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Pentominium
The Pentominium is a 122-storey, supertall skyscraper on hold in Dubai, United Arab Emirates. Construction on the tower has been halted since August 2011. It was designed by Andrew Bromberg of architects Aedas and funded by Trident International Holdings. The AED 1.46 billion (US$400 million) construction contract was awarded to Arabian Construction Company (ACC). Construction started on 26 July 2008 and, before construction stopped, the building was expected to be completed in 2013. By May 2011, 22 floors had been completed. However, in August 2011, construction stopped after Trident International Holdings fell behind on payments for a US$20.4 million loan following the global financial crisis. , the tower still stands incomplete. Had the project been completed as scheduled, the Pentominium would have been the second tallest building in Dubai after Burj Khalifa as well as the tallest residential building in the world if completed before Central Park Tower. Projected reside ...
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One World Trade Center
One World Trade Center (also known as One World Trade, One WTC, and formerly Freedom Tower) is the main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City. Designed by David Childs of Skidmore, Owings & Merrill, One World Trade Center is the tallest building in the United States, the tallest building in the Western Hemisphere, and the seventh-tallest in the world. The supertall structure has the same name as the North Tower of the original World Trade Center, which was destroyed in the terrorist attacks of September 11, 2001. The new skyscraper stands on the northwest corner of the World Trade Center site, on the site of the original 6 World Trade Center. It is bounded by West Street to the west, Vesey Street to the north, Fulton Street to the south, and Washington Street to the east. The construction of below-ground utility relocations, footings, and foundations for the new building began on April 27, 2006. One World Trade Center b ...
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Al Hamra Tower
The Al Hamra Firduos Tower is a skyscraper in Kuwait City, Kuwait. It is the tallest building in Kuwait. Construction of the skyscraper started in 2005. It was completed in 2011. Designed by architectural firms Skidmore, Owings & Merrill and Ramshir and Callison, it is the tallest curved concrete skyscraper in the world, and the thirty-sixth tallest building in the world at . Profile The building utilizes wrapped glass on the east, north, and west both for aesthetics and to reduce the amount of reflective surface area on the south facade, which also features brushed Jura limestone. Flared walls reaching from the southwest and southeast corners of the core span the entire height of the tower, and there is a column-free 24-meter-tall lobby The landscape was designed by Francis Landscapes. The tower was included in the list of the best inventions of 2011 by ''Time'' magazine. Awards *2011: Emporis Skyscraper Award *2010: Cityscape • Commercial / Mixed Use Built *2008: Chicago ...
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Trump International Hotel And Tower (Chicago)
The Trump International Hotel and Tower is a skyscraper condo-hotel in downtown Chicago, Illinois. The building, named for Donald Trump, was designed by architect Adrian Smith of Skidmore, Owings and Merrill. Bovis Lend Lease built the 100-story structure, which reaches a height of including its spire, its roof topping out at . It is next to the main branch of the Chicago River, with a view of the entry to Lake Michigan beyond a series of bridges over the river. The building received publicity when the winner of the first season of ''The Apprentice'' reality television show, Bill Rancic, chose to manage the construction of the tower over managing a Rancho Palos Verdes based "Trump National Golf Course & Resort" in the Los Angeles metro area. Trump announced in 2001 that the skyscraper would become the tallest building in the world, but after the September 11 attacks that same year, the architects scaled back the building's plans, and its design underwent several revisions. W ...
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Supertall Building
A supertall building is an occupied "supertall" structure higher than and beneath . A form of skyscraper, it falls midway between a common minimum definition of "skyscraper" (a building taller ) and a " megatall" building (taller than ). Different organizations from the United States and Europe define skyscrapers generally as buildings at least 150 metres in height or taller.Data Standards: skyscraper (ESN 24419)
, accessed on line July 2020. "A skyscraper is defined on Emporis as a multi-story building whose architectural height is at least 100 meters. This definition falls midway between many common definitions worldwide, and ...
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Stonecutters Bridge
Stonecutters Bridge is a high level cable-stayed bridge spanning the Rambler Channel in Hong Kong, connecting Nam Wan Kok, Tsing Yi to Stonecutters Island. The bridge deck was completed on 7 April 2009, and opened to traffic on 20 December that year. The bridge was the second-longest cable-stayed span in the world at the time of its completion. The approaches at Tsing Yi and Stonecutters Island are located near Container Terminal 9 and Container Terminal 8, respectively. The bridge is part of Hong Kong's Route 8, connecting Sha Tin, Cheung Sha Wan, Tsing Yi island, Ma Wan and Lantau Island. Other major constructions along the route are Nam Wan Tunnel (completed in 2008), Eagle's Nest Tunnel (completed in 2008), Sha Tin Heights Tunnel (completed in 2008), Tsing Ma Bridge (completed in 1997) and Kap Shui Mun Bridge (completed in 1997). The Stonecutters Bridge won the 2010 ''Supreme Award'' at the annual Structural Awards presented by the Institution of Structural Engineers, ...
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Portland Cement
Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin, and is usually made from limestone. It is a fine powder, produced by heating limestone and clay minerals in a kiln to form clinker, grinding the clinker, and adding 2 to 3 percent of gypsum. Several types of portland cement are available. The most common, called ordinary portland cement (OPC), is grey, but white Portland cement is also available. Its name is derived from its resemblance to Portland stone which was quarried on the Isle of Portland in Dorset, England. It was named by Joseph Aspdin who obtained a patent for it in 1824. His son William Aspdin is regarded as the inventor of "modern" portland cement due to his developments in the 1840s. The low cost and widespread availability of the limestone, shales ...
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