The "safety elevator was invented by ____________?

• Willis Carrier

• Elisha Otis

• Thomas Edison

• Alexander Bell

The challenge of "Mobility" in tower technology was solved with the use of which of the following?

• kangaroo crane

• exoskeleton

• safety elevator

• aerodynamics

Stone was much too heavy for taller tower construction. So engineers used which of the following materials to lighten and strengthen the structure?

• aluminum

• fiberglass

• copper

• steel

The invention of the air conditioner was the answer to the "heat challenge" as towers were built with more glass windows. Who invented this air conditioning?

• Willis Carrier

• Elisha Otis

• Thomas Edison

• Alexander Bell

What was done to the windows to also help with keeping heat from the sun to a minimum?

• The windows were left open.

• Windows were removed.

• A reflective metal coating was added.

• The windows were turned backwards.

In an effort to speed up construction, which of the following was not used?

• Kangaroo crane

• hydraulic wrench

• jump forming

• concrete pumping

The Sears Tower used a steel exoskeleton to minimize the effects high winds. What was used to handle wind in the Burj Dubai?

• thermodynamics

• aerodynamics

• endoskeleton

• reverse fan technology

In providing safety in a large fire, the technology designed into the Burj Dubai uses:

• a Super Sprinkler System.

• all non-flammable materials.

• refuge rooms.

• reinforced concrete.

The proven method of designing towers to handle earthquakes is to use:

• flexible elastic joints.

• earthquake alarms.

• larger sway bars.

• reinforced concrete.

One unusual factor that made the building of the Burj Dubai very difficult was that it was:

• built in two months.

• built in the dessert.

• built using only robots.

• built without engineers.