The architect was george e.
Floor plan pentagon building layout.
The pentagon is a five story building composed of five rings a through e built around a center courtyard.
The 10 corridors result from the fact that each of the five a ring corner joints called apexes have two corridors radiating out to the e ring the outermost ring.
When it was completed in 1943 its 6 600 000 square feet 3 705 793 square feet of usable office space more than three times the available area in the empire state building made it the world s largest building by floor area.
Completed at top speed in 1941 as the united states prepared to enter world war ii the pentagon has remained much the same even as the military has evolved.
In october 1941 the president approved somervell s plans and construction proceeded at a very rapid pace.
The pentagon is the largest low rise office building in the world and its renovation was the most complex in contemporary history.
Mcshain company of philadelphia.
The rings are connected by 10 spoke like corridors.
Today it still ranks as the 13th largest by area.
Steel was in short supply and needed for the war effort.
Bergstrom and the prime contractor was the john t.
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Immediately after the pearl harbor attack a fourth floor was added to the plan and later a fifth.
To reduce the amount of steel used architects incorporated ramps rather than elevators in the building.
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Military the phrase the pentagon is also often used as a metonym for the department of defense and its leadership.
The pentagon is the headquarters building of the united states department of defense as a symbol of the u s.
To keep costs down the building s pentagon shape design plans were retained.