Steel

An Old-Fashioned Name

by Don Friedman on February 17, 2018


To an American, that’s just a picturesque streetscape in central London. But what’s that store in the center?


A Detailing Mystery

January 26, 2018

That picture is looking up at the underside of a floor in an old warehouse. The walls are solid brick, and the floors are concrete vaults supported by steel beams. The last beam supporting a vault is a channel that runs into the face of the pier just past the window, where it is supported […]

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Aslant

January 8, 2018

That’s the ceiling – which appears to be the structural roof – at the north entry to the Whitehall Street station on the R/W. Specifically, this is the stair leading down from the entry mezzanine to the platform. The excavated volume of space is a sloped rectangular prism, with the roof following the slope. The […]

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Seeing New Technology

December 26, 2017

That’s a picture from the new west concourse at Penn Station, phase 0.01 of the plan to convert the Farley Post Office into a new headhouse for the station. I had a picture up a while back showing a newly-exposed column at an office building on Rector Street; the exposed columns above, which support the […]

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Rivets in U.S. Structures

December 8, 2017

(Picture: Three workers installing rivets in the construction of the Empire State Building in 1931, from the Lewis Hine collection at the NYPL.) Rivets in the metal structures now seems archaic and from other times. However, rivets were extensively used for metal structure in the 19th century and in the first half of the 20th. […]

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When Is An Arch Not An Arch?

November 15, 2017

That’s the F/G subway, paralleling 9th Street in Brooklyn, where the tracks cross over Fourth Avenue. The train is elevated here because it crosses over the Gowanus Canal a little to the west at the Smith/9th Street station. As the tracks head east, to the left, they stay at roughly the same elevation as the […]

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Changing Fashions

November 14, 2017

The black paint and lighting make the picture a little hard to read, but this is an old gentleman dressed up in the latest fashion. The building is 2 Rector Street, now known as 101 Greenwich Street*, a 1905 office building that was expanded vertically in the 1920s. It’s a fairly typical building of its […]

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Different Types of Efficiency

October 19, 2017

I seem to keep coming back to train station roofs as I write. That’s happening partly because I travel by train a good amount so I’m looking at those roofs, and partly because they tend to have exposed structure designed by engineers with little or no separate architectural design, which may not make them beautiful […]

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Detailing For The Forces

October 17, 2017

A big part of structural design is “detailing,” which is drawing the way various pieces of a building  are connected. The bridge above (click to enlarge all of the photos) is in Wrocław and has a shorter span than the average American suspension bridge of any era. I walked over it a number of times […]

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Composite Structure

August 21, 2017

That’s the side wall and an oblique view of the front of a small building on Nassau Street. The front appears to be early twentieth century, but the odds are good that this is an older building that has been modified multiple times. If nothing else, the storefront – visible as sheet metal at the […]

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