Chicago Architecture Info. The building owners count the roof as Disputed floor The mechanical penthouse for the elevators. Some buildings count this as a floor, some do not. This building does. Height to the tip of the west antenna mast 1, feet Height to the tip of the east antenna mast 1, feet Height to roof 1, feet, seven inches Height to glass observation boxes 1, feet Width feet Total floor space 4,, square feet Rentable floor space 3,, square feet Weight ,, pounds Caissons Elevators total.
SkyRise Chicago About Willis Tower - Shirley Ryan AbilityLab
The project will reduce the base building electricity use by 80 percent including energy savings and co-generation , equivalent to 68 million kilowatt hours or , barrels of oil per year. The hotel will operate using only part of the energy savings from the Willis Tower greening project, which means the hotel will draw net zero energy from the power grid. The greening project at Willis — the tallest building in the United States and also one of the largest in terms of square footage — will demonstrate how to save a significant amount of energy and improve the occupant experience of an existing building during a large-scale 21st century modernization. The tower has 16, single-pane windows. Sustainability plans for the building call for a window replacement and glazing program.
About Willis Tower & SkyDeck Chicago
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Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element i. Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.