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Window cleaner. Window cleaning, or window washing, is the exterior cleaning of architectural glass used for structural, lighting, or decorative purposes. It can be done manually, using a variety of tools for cleaning and access. Technology is also employed and increasingly, automation. Commercial work is contracted variously from in-person ...
Early skyscrapers
Skyscraper - Wikipedia ... Skyscraper
List of tallest buildings in Portland, Oregon
Ventilation (architecture)
United Nations Secretariat Building
The design and construction of skyscrapers involves creating safe, habitable spaces in very high buildings. The buildings must support their weight, resist wind and earthquakes, and protect occupants from fire. Yet they must also be conveniently accessible, even on the upper floors, and provide utilities and a comfortable climate for the occupants.
The following table ranks the tallest buildings in Anchorage, Alaska, USA that stand at least 150 feet (46 m) in height.There are currently 16 high-rise buildings in Anchorage meeting this requirement, the tallest being the 22 story, 296 foot (90m) Conoco-Phillips building which has held the title of tallest building in both Anchorage and Alaska since its completion in 1983.