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A Brooklyn Daily Eagle article in September 1926 stated that the building contained "nearly 31 acres [13 ha] of cinder concrete floor arches and cement floors". [24] The Brooklyn Times-Union claimed that, if there were one person per 100 square feet (9.3 m 2 ) within the Graybar Building's 1.35 million square feet (125,000 m 2 ) of office space ...
In ovens, steam cleaning is an alternative to catalysis and pyrolysis for making a self-cleaning oven, and uses a lower temperature (approximately 100 Celsius) compared to catalysis (approx. 200 Celsius) and pyrolysis (approx. 500 Celsius). [3]
There were 89 columns on each floor, arranged in six rows. The largest column carried a load of 1,719 short tons (1,535 long tons; 1,559 t) and had a cross section of 253.9 square inches (1,638 cm 2). [3] The floors consisted of hollow-tile flat arches or concrete with cinder filling, and were surfaced with mosaic or terrazzo tiles. [24]
At least twelve steam pipe explosions have occurred in New York City since 1987. [9] The most recent major incident was the 2018 steam pipe explosion which occurred in the Flatiron District and forced the evacuation of 49 buildings. [10] [11] The explosion released concrete, asphalt, "asbestos-containing material" and mud into the air. The ...
If concrete is exposed to very high temperatures very rapidly, explosive spalling of the concrete can result. In a very hot, very quick fire the water inside the concrete will boil before it evaporates. The steam inside the concrete exerts expansive pressure and can initiate and forcibly expel a spall. [23]
The finished floor is typically raised off the concrete basement floor. In countries such as Canada, laminate flooring is an exception: It is typically separated from the concrete by only a thin foam underlay. Radiant heating systems may be embedded within the concrete floor. Even if unfinished and unoccupied, basements are heated in order to ...
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