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The Twin Towers (WTC; World Trade Center) is built by steel frames supporting the square concrete floors that hold the building together. The core of the building is made of steel poles that support the 99 lifts in it. Also the facing materials are aluminum and steel supported with glass.
http://www.pbs.org/wgbh/buildingbig/wonder/structure/world_trade.html
That site has some more information about the twin towers.
What else can I help you with?
What kinds of materials do engineers use to build walls?
There are many types of materials engineers use to build walls. Three possible construction materials are wood, brick, and concrete.
What materials do construction workers use to build a house?
Construction workers use a variety of materials to build a house, including wood for framing, concrete for foundations, and bricks or blocks for walls. Roofing materials such as shingles or metal are used for protection from the elements, while insulation materials help regulate temperature and energy efficiency. Additionally, drywall is commonly used for interior walls, and various fixtures and finishes like flooring, cabinetry, and paint are added to complete the house.
What do people use to build artificial levees?
People typically use a combination of materials to build artificial levees, including earth, clay, sand, and gravel. These materials are chosen for their ability to effectively block and redirect water flow. In some cases, levees may also incorporate geotextiles or other engineered materials to enhance stability and reduce erosion. The design and construction methods vary based on the specific environmental conditions and the intended purpose of the levee.
What kind of materials does one need to build solar panels?
In order to build solar panels one needs to find materials capable of being semiconductors. It is common to use silicon as the main material for this combined with using metal electrodes to create the required electronic field. Scientists have recently been experimenting with other materials such as plastic or organic polymers as they can be less expensive to produce.
What physical properties would you use to find the right materials to build a birdhouse?
Resistant to bending. Good binding. Resistance to combustion. Style. Cheap.
How many things did they use to build the twin towers?
if your a math nerd you can figure dis out
What materials can you use to make a mini model of the twin tower?
to make the twin towers you could use metal and weld the pices together or you could use the same sise card board boxes and then paint them silver thank you hope i was a help
Did the twin towers use to stand in Central Park?
No. It used to stand in Wall Street.
How can you use the word tragedy in a sentence?
It is a tragedy that the planes crashed in to the Twin towers in 9/11. It is very sad.
Who was responsible for the rest of the use of extreme violence against civilians in the US on September 11 2001?
twin towers
What materials did they use to build their homes?
what matrials didthefirst americans use to build their home
What happened to the twin towers in 2001?
On 9/11 2001 the Twin Towers were destroyed by controlled demolition. The US government has claimed that the towers fell as a result of plane and fire damage but provide absolutely no valid scientific evidence whatsoever to support this theory. What evidence there is points only to the use of some form of controlled demolition.
Do people miss the twin towers?
it use to but on September 11, 2001 two planes crash into both towers. the by 10:05 south tower collapse. then by 10:28 the north tower collapse. so now the do not exist.
What kinds of materials do engineers use to build walls?
There are many types of materials engineers use to build walls. Three possible construction materials are wood, brick, and concrete.
What materials should you use to build a house near a volcano?
You should build it out of lava proof materials such as poo
How do you use brobdingnagian in a sentence as a noun?
The Twin Towers were brobdingnagian compared to the two story house. Brobdingnagian-Being of tremendous size
How many stories tall were the twin towers each?
There was 110 stories but only 101 were in use of the attack There was 110 stories but only 101 were in use of the attack
