LEGO Willis Tower Manual de instrucciones - Página 3

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Facts at a Glance

Location: .......................... 233 S. Wacker Drive, Chicago, Illinois, United States

Architect: .......................... Skidmore, Owings and Merrill LLP.

Classification: ............... Supertall

Construction Type: .... Steel Frame and Curtain Wall

Materials: ......................... Aluminum, Concrete, Glass and Steel

Year: .................................... 1970-1974

Height: ............................... 1,458 ft. (442 m.)

Footprint: ......................... 225 ft. x 225 ft. (68 m. x 68 m.)

Pinnacle Type: .............. East Antenna 1,720 ft. (521 m.), West Antenna 1,740 ft. (527 m.)

Stories: .............................. 110

Cost: ................................... $175 million (1970)

Floor Area: ...................... 4,400,000 ft

Zoned: .............................. Commercial: Office, Communication, Retail & Observation

Elevators. ......................... 104

Points of Interest

There are four sets of distinctive black bands wrapping

around the perimeter of the building which appear

between the 29th-32nd, 64th-65th, 88th-89th, and 104th-

109th floors. These black bands are actually louvers

(409,000 m

)

which allow ventilation for service equipment and also

serve to hide the structure's belt trusses which the

Willis, Roebuck & Company did not want to be visible.

McShane-Fleming Studios

Chicago, Illinois