Old Structures Engineering
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Old Structures Engineering
@old-structures.bsky.social
Old Structures Engineering brings award-winning technical expertise, responding to complex challenges on all aspects relating to historical and existing building projects. More about us at oldstructures.com
It Looked Familiar: Greenwich Village

Mary Jane Watson and Felicia Hardy go for a bite to eat: A view up Sixth Avenue from Waverly Place: Note the Jefferson Market Courthouse Library in the background.
It Looked Familiar: Greenwich Village
Mary Jane Watson and Felicia Hardy go for a bite to eat: A view up Sixth Avenue from Waverly Place: Note the Jefferson Market Courthouse Library in the background.
oldstructures.com
December 27, 2025 at 12:00 PM
Later Tonight

The New York Public Library gives the date of this photos as "1890 (Questionable)" but that seems roughly correct. It's a view of the foot of Fifth Avenue, where it ends at Washington Square. It's snowing, and there's a reasonable amount of fresh snow on the tree branches, but the…
Later Tonight
The New York Public Library gives the date of this photos as "1890 (Questionable)" but that seems roughly correct. It's a view of the foot of Fifth Avenue, where it ends at Washington Square. It's snowing, and there's a reasonable amount of fresh snow on the tree branches, but the sidewalks were cleared long enough ago that there are piles of snow in the gutters. I'm thinking this was the second snowfall in two or three days.
oldstructures.com
December 26, 2025 at 12:01 PM
A Day Late

No snow today, but supposedly a decent amount tomorrow. Meanwhile, the 1880s give us two views of Central Park in the winter:
A Day Late
No snow today, but supposedly a decent amount tomorrow. Meanwhile, the 1880s give us two views of Central Park in the winter:
oldstructures.com
December 25, 2025 at 12:00 PM
Regardless Of The Source

Some holiday cheer: In case you're wondering about the painting, here's the back of the card: We've met Wills's Cigarettes before: publishing a construction photo of the Singer Building as "Famous Invention No. 36: Steel-Frame Building" and a construction photo of…
Regardless Of The Source
Some holiday cheer: In case you're wondering about the painting, here's the back of the card: We've met Wills's Cigarettes before: publishing a construction photo of the Singer Building as "Famous Invention No. 36: Steel-Frame Building" and a construction photo of (probably) the Flatiron Building as "Engineering Wonders No. 22: Building a 'Skyscraper,' U.S.A." It's good to see that their apparently compulsive need to create lists of things to put on trading cards included art from their own country.
oldstructures.com
December 24, 2025 at 12:00 PM
Life Imitating Art

A while back I discussed my feedback-cycle theory of movies and skyscraper design influencing one another. The origin of that theory is Fritz Lang's statement, some hundred years ago, that seeing Manhattan for the first time is what gave him the inspiration for Metropolis.…
Life Imitating Art
A while back I discussed my feedback-cycle theory of movies and skyscraper design influencing one another. The origin of that theory is Fritz Lang's statement, some hundred years ago, that seeing Manhattan for the first time is what gave him the inspiration for Metropolis. Whatever you may think of the movie, it's hard to deny that it is, in part, a celebration of the visual effect of a dense city of tall buildings, and as such has inspired people who design skyscrapers.
oldstructures.com
December 23, 2025 at 12:01 PM
EBC Update

I previously discussed the proposed New York City Existing Building Code, and it's time for an update. When I wrote the previous blog post, in September, we were waiting for the proposed legislation to make it to debate and voting by the City Council, so everything was theoretical and…
EBC Update
I previously discussed the proposed New York City Existing Building Code, and it's time for an update. When I wrote the previous blog post, in September, we were waiting for the proposed legislation to make it to debate and voting by the City Council, so everything was theoretical and in the future. The news - the reason for today's post - is that the bill, …
oldstructures.com
December 22, 2025 at 12:00 PM
More Pareidolia

As I was walking around, I got a good view of 30 Hudson Yards and its observation deck, The Edge: No comment:
More Pareidolia
As I was walking around, I got a good view of 30 Hudson Yards and its observation deck, The Edge: No comment:
oldstructures.com
December 21, 2025 at 12:00 PM
It Looked Familiar: I Walk By Every Week

Tony Stark conducts some business while walking: Street view of Broad Street, looking south from Wall Street: The New York Stock Exchange, on the right with the roman temple front, will put up huge banners for important events among the listed companies;…
It Looked Familiar: I Walk By Every Week
Tony Stark conducts some business while walking: Street view of Broad Street, looking south from Wall Street: The New York Stock Exchange, on the right with the roman temple front, will put up huge banners for important events among the listed companies; the big event in the comic is Doctor Doom taking over the entire world. C'est la vie. Broad Street bends south of Exchange Place - if you could see past the curve, our office is two blocks further down on the right.
oldstructures.com
December 20, 2025 at 12:00 PM
Theory Versus Practice, Garbage Edition

One of my favorite jokes: In theory there's no difference between theory and practice, but in practice, there is. Recycling seems like a clean idea. Instead of throwing things away to rot in a landfill or, worse, not rot in a landfill but simply stay there…
Theory Versus Practice, Garbage Edition
One of my favorite jokes: In theory there's no difference between theory and practice, but in practice, there is. Recycling seems like a clean idea. Instead of throwing things away to rot in a landfill or, worse, not rot in a landfill but simply stay there forever, you reuse the material to cut down on pollution. In reality, the process begins with collecting an enormous amount of garbage.
oldstructures.com
December 19, 2025 at 12:00 PM
Organized Chaos

I've written before about the caisson foundations at the Woolworth Building but here comes the New York Public Library with a fantastic Irving Underhill photo from May 1, 1911: We're looking south with Broadway on the left. The tallest building, partially lost in the haze, is…
Organized Chaos
I've written before about the caisson foundations at the Woolworth Building but here comes the New York Public Library with a fantastic Irving Underhill photo from May 1, 1911: We're looking south with Broadway on the left. The tallest building, partially lost in the haze, is Singer. I believe this photo was taken from a window or the roof at Underhill's studio, which was at the corner of Park Place and Broadway.
oldstructures.com
December 18, 2025 at 12:00 PM
As Good A Theory As Any

This post may not seem like it's about the built environment, but it is. I'll get there eventually, just with a detour. Baba Yaga is a woman with a considerable presence in Slavic, mostly Russian folk tales. I've never been clear on whether she's a witch or even human; she…
As Good A Theory As Any
This post may not seem like it's about the built environment, but it is. I'll get there eventually, just with a detour. Baba Yaga is a woman with a considerable presence in Slavic, mostly Russian folk tales. I've never been clear on whether she's a witch or even human; she can definitely be terrifying but also sometimes helpful. (Like a lot of folklore characters, she's neither all good nor all bad.) Her most memorable feature is not actually about her, it's about her house.
oldstructures.com
December 17, 2025 at 12:00 PM
Revisiting A Moment

More than five years ago, I wrote about the see-saw history of the Bronx-Whitestone Bridge: built in 1939 with the slender profile that having only plate-girder stiffeners can give you, modified in 1943 with the addition of big stiffening trusses as a reaction to the collapse…
Revisiting A Moment
More than five years ago, I wrote about the see-saw history of the Bronx-Whitestone Bridge: built in 1939 with the slender profile that having only plate-girder stiffeners can give you, modified in 1943 with the addition of big stiffening trusses as a reaction to the collapse of the first Tacoma Narrows Bridge, and then back to a slim profile in 2003 with the removal of trusses and the addition of wind fairings based on modern dynamic analysis.
oldstructures.com
December 16, 2025 at 12:00 PM
Just A Little Over The Top

During a rooftop site visit in midtown a couple of years ago, I turned around and there it was: the old General Electric Building. It's sometimes overlooked - it's only 50 stories tall and slender - but it's one the great examples of the romantic-corporate version of Art…
Just A Little Over The Top
During a rooftop site visit in midtown a couple of years ago, I turned around and there it was: the old General Electric Building. It's sometimes overlooked - it's only 50 stories tall and slender - but it's one the great examples of the romantic-corporate version of Art Deco. Chrysler is psycho-corporate Deco, and Rockefeller Center and the Empire State are simply corporate Deco.
oldstructures.com
December 15, 2025 at 12:00 PM
Old Home Week

For various reasons, I went to two different elementary schools, even though we lived in the same apartment from when I was 4 until I left for college. The second school, from 4th to 6th grade, was PS24. Here's a picture I took three years ago when I happened to be in the…
Old Home Week
For various reasons, I went to two different elementary schools, even though we lived in the same apartment from when I was 4 until I left for college. The second school, from 4th to 6th grade, was PS24. Here's a picture I took three years ago when I happened to be in the neighborhood: The school I went to is on the right.
oldstructures.com
December 14, 2025 at 12:00 PM
Three Old Photos

In honor of the cold weather we've been having, some of it with clear blue skies and tonight with snow, some pictures from a few years ago. First, 17 Battery Place, 20 West Street and 21 West Street with a clear sky: Next, with some clouds: And finally a close up on 17 Battery:…
Three Old Photos
In honor of the cold weather we've been having, some of it with clear blue skies and tonight with snow, some pictures from a few years ago. First, 17 Battery Place, 20 West Street and 21 West Street with a clear sky: Next, with some clouds: And finally a close up on 17 Battery: Pretty.
oldstructures.com
December 13, 2025 at 12:00 PM
Proof!

I've more or less run out of Lewis Hine photos of the Empire State Building construction, so let's head south for Irving Underhill photographing the Woolworth construction about twenty years earlier: The photo, from February 20, 1912, is titled "Woolworth Bldg. iron work" and shows the…
Proof!
I've more or less run out of Lewis Hine photos of the Empire State Building construction, so let's head south for Irving Underhill photographing the Woolworth construction about twenty years earlier: The photo, from February 20, 1912, is titled "Woolworth Bldg. iron work" and shows the steel frame erected up to about the 16th floor. It appears there are three derricks up top for picking steel, as well as a whole bunch of masons' scaffolds lower down; the masons are working on the facade at the fifth floor.
oldstructures.com
December 12, 2025 at 12:00 PM
‘Tis But A Scratch

A beam - maybe steel, maybe wrought iron - in a sidewalk vault, photographed several years ago: Just to be clear about what you're looking at: A is some white paint (almost certainly lead-based) on the beam web. B is a big hole where the web has rusted away completely. C is…
‘Tis But A Scratch
A beam - maybe steel, maybe wrought iron - in a sidewalk vault, photographed several years ago: Just to be clear about what you're looking at: A is some white paint (almost certainly lead-based) on the beam web. B is a big hole where the web has rusted away completely. C is what's left of the bottom flange after a lot of delamination and other material loss.
oldstructures.com
December 11, 2025 at 12:01 PM
Trading One For Another

The attic of a very old house: Yes, that is a chimney on an angle. That's a fairly common sight in very old houses, as is the wood framing on the underside of the angle, propping (maybe) the masonry. This is what happens when the fireplaces are located where the logic of…
Trading One For Another
The attic of a very old house: Yes, that is a chimney on an angle. That's a fairly common sight in very old houses, as is the wood framing on the underside of the angle, propping (maybe) the masonry. This is what happens when the fireplaces are located where the logic of the interior rooms dictates and those locations are not where you want the chimneys to be.
oldstructures.com
December 10, 2025 at 12:00 PM
This Was Not Normal

From the Wurts Brothers, "General View - Rivers - Hudson River - looking west from Whitehall Building": Once again, that is an accurate description of the framing of the photo - the Whitehall Building at 17 Battery Place, among other things, is where the New York harbor pilots…
This Was Not Normal
From the Wurts Brothers, "General View - Rivers - Hudson River - looking west from Whitehall Building": Once again, that is an accurate description of the framing of the photo - the Whitehall Building at 17 Battery Place, among other things, is where the New York harbor pilots used to be based - but it really misses the point of the photo.
oldstructures.com
December 9, 2025 at 12:00 PM
A Curiosity

Some old houses in Chelsea, on Ninth Avenue between 21st and 22nd Streets: To quote from the designation report for the Chelsea Historic District, "These three smalI wooden buildings bring a touch of nostalgia to the District, as wooden buildings characteristically do, wherever they…
A Curiosity
Some old houses in Chelsea, on Ninth Avenue between 21st and 22nd Streets: To quote from the designation report for the Chelsea Historic District, "These three smalI wooden buildings bring a touch of nostalgia to the District, as wooden buildings characteristically do, wherever they survive in Manhattan." The report lists the southernmost building (the one that's been restored) as constructed in 1856, and the other two as constructed in 1868.
oldstructures.com
December 8, 2025 at 12:01 PM
It Looked Familiar: Sort of

A newspaper headquarters in Gotham City: The Chrysler Building: Photo by Dan Smedley on Unsplash Of all of the possible criticisms of the design of Chrysler, I never expected to come across "it's not busy enough."
It Looked Familiar: Sort of
A newspaper headquarters in Gotham City: The Chrysler Building: Photo by Dan Smedley on Unsplash Of all of the possible criticisms of the design of Chrysler, I never expected to come across "it's not busy enough."
oldstructures.com
December 7, 2025 at 12:00 PM
A Portrait

I was on site with Ellie Phetteplace yesterday, and she took this picture of me. I like it so much, it may become my preferred portrait for official correspondence. I don't usually wear a hoodie, but it was below 20F when I left home, and this was the easiest way to keep my neck warm…
A Portrait
I was on site with Ellie Phetteplace yesterday, and she took this picture of me. I like it so much, it may become my preferred portrait for official correspondence. I don't usually wear a hoodie, but it was below 20F when I left home, and this was the easiest way to keep my neck warm during a cold visit in a damp location.
oldstructures.com
December 6, 2025 at 12:00 PM
Raking Light Is Your Friend

I'm returning to this topic - a tip on how to do field investigation of buildings - for the fourth time in the last two years, mostly because I took a picture that illustrates it perfectly. An apartment house in a landmark district, lit from the south: And close up:…
Raking Light Is Your Friend
I'm returning to this topic - a tip on how to do field investigation of buildings - for the fourth time in the last two years, mostly because I took a picture that illustrates it perfectly. An apartment house in a landmark district, lit from the south: And close up: Obviously the second picture was pushing the limits of the (limited) camera in my phone.
oldstructures.com
December 5, 2025 at 12:00 PM
An Attack

View of 270 Park Avenue between 432 Park Avenue and One Vanderbilt from the 86th floor of the Empire State Building after dusk on March 14, 2025. by Jfendi. I frankly enjoy a good savaging by a critic1, whether I agree with it or not. There is something deeply satisfying about a…
An Attack
View of 270 Park Avenue between 432 Park Avenue and One Vanderbilt from the 86th floor of the Empire State Building after dusk on March 14, 2025. by Jfendi. I frankly enjoy a good savaging by a critic1, whether I agree with it or not. There is something deeply satisfying about a well-constructed and well-written assault.2…
oldstructures.com
December 4, 2025 at 12:00 PM
Caught In The Act

Lewis Hine titled this 1931 photo of the construction of the Empire State Building "Workers having lunch" and it's hard to argue with the accuracy of that. There is, however, a whole lot more in the frame… First, given the choice of sitting on a pile of wood plank or sitting on a…
Caught In The Act
Lewis Hine titled this 1931 photo of the construction of the Empire State Building "Workers having lunch" and it's hard to argue with the accuracy of that. There is, however, a whole lot more in the frame… First, given the choice of sitting on a pile of wood plank or sitting on a roll of wire mesh, I'd choose the wood.
oldstructures.com
December 3, 2025 at 12:00 PM