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1910s
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00:00:00
At the height of New York's skyscraper
00:00:02
race, no one had ever seen a tower
00:00:04
crane. Yet 700 ft giants rose above the
00:00:07
streets. The secret was steel beams
00:00:10
hauled by steam powered derks swung over
00:00:13
city traffic and fixed in place by iron
00:00:15
workers balancing on skeleton frames.
00:00:18
Why did crews risk their lives working
00:00:21
without harnesses on beams hoisted
00:00:23
directly from the curb? The answer
00:00:25
reveals not just how these engineering
00:00:27
marvels stood without cranes, but why
00:00:30
every beam and rivet demanded nerve,
00:00:33
timing, and deadly precision.
00:00:36
What really forced builders to invent
00:00:38
new methods, and how did it change our
00:00:40
cities forever?
00:00:43
Steel changed the very idea of what a
00:00:45
building could be. Before the 1880s,
00:00:48
city skylines were shaped by stone,
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brick, and iron. Each one heavy. each
00:00:53
one limiting how high walls could safely
00:00:56
rise. The Bessmer process developed in
00:00:59
the 1850s brought steel production out
00:01:01
of the laboratory and into the heart of
00:01:04
American industry. Suddenly, steel beams
00:01:07
could be rolled by the thousands, each
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one strong enough to carry far more
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weight than stone at a fraction of the
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mass. By the early 20th century, this
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new material set off a race to the sky.
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Instead of relying on thick loadbearing
00:01:22
walls, builders began to assemble steel
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skeletons, networks of columns and beams
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that carried the entire weight of a
00:01:30
building down through a series of
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precise connections. This skeletal
00:01:34
structure allowed architects to reach
00:01:36
heights that would have been impossible
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with masonry alone. The load path in
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these frames ran straight down through
00:01:43
the steel, bypassing the need for
00:01:45
massive walls and freeing up floor space
00:01:48
for offices, shops, and apartments. By
00:01:51
the 1910s, New York and Chicago were
00:01:54
locked in a contest to see how high
00:01:56
steel could go. The Woolworth building,
00:01:59
completed in 1913, soared to 792 ft,
00:02:03
while the Metropolitan Life Tower and
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the Singer Building each climbed past
00:02:08
600 ft.
00:02:10
All of these towers relied on steel
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frames assembled one beam at a time.
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Each piece hoisted into place by derks
00:02:17
rather than cranes. The sheer volume of
00:02:21
steel required for these projects was
00:02:23
staggering. Mills in Pittsburgh and
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Gary, Indiana rolled out custom beams on
00:02:28
a schedule that stretched for months.
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Every shipment had to arrive in the
00:02:32
right order, ready to be lifted from the
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street straight onto the rising frame.
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Steel's strength and flexibility made
00:02:40
these towers possible. But it also
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demanded a new way of building. Every
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connection, every joint had to be
00:02:47
engineered to carry the shifting loads
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of wind and gravity across dozens of
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stories. The result was a construction
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process defined by coordination, timing,
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and relentless supply. Without steel,
00:03:01
the modern skyscraper would have
00:03:02
remained a dream. With it, the skyline
00:03:05
became a place where height was limited
00:03:07
only by human ambition. And the next
00:03:10
challenge was how to get all that
00:03:12
material to the job site, ready for the
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iron workers waiting high above the
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street.
00:03:18
Steel beams bound for New York
00:03:20
skyscrapers began their journey in the
00:03:22
mills of Pittsburgh in Gary, Indiana.
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Each piece was rolled to order, then
00:03:27
loaded onto freight cars for a trip that
00:03:29
could take several days to reach the
00:03:31
city. Once the steel arrived at rail
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yards along the Hudson or East River,
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the challenge was only beginning.
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Manhattan's crowded streets left no room
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for stockpiles. Horsedrawn wagons,
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sometimes six a breast, threaded their
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way through traffic, delivering beams
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straight to the curb outside
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construction sites. In the heart of the
00:03:52
city, space was measured in inches, not
00:03:55
yards. There was rarely a vacant lot or
00:03:58
open yard to store materials. Instead,
00:04:01
beams were hoisted directly from the
00:04:03
street to the rising frame above. This
00:04:05
practice forced a kind of just in time
00:04:07
delivery long before the term entered
00:04:10
business textbooks. Every shipment had
00:04:13
to arrive in the exact sequence needed
00:04:15
for assembly. If a beam showed up out of
00:04:17
order, it could not simply be set aside.
00:04:20
There was nowhere for it to go. Work
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crews on the ground coordinated closely
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with foremen and iron workers high
00:04:27
above. A beam might be unloaded from a
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wagon in the morning and hanging from a
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Derek's hook minutes later. The Derek
00:04:35
operators using steam powered hoists
00:04:37
swung the steel up and over the city's
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constant bustle, threading it between
00:04:41
trolley wires and lamp posts. The entire
00:04:45
process demanded precision, not just in
00:04:47
engineering, but in timing and teamwork.
00:04:50
Even a small delay could ripple through
00:04:52
the schedule. If a shipment was late or
00:04:55
a wagon stuck in traffic, iron workers
00:04:58
might find themselves waiting on the
00:04:59
beams needed for the next level. On the
00:05:02
busiest sites, like the Woolworth
00:05:04
building, dozens of deliveries might
00:05:06
arrive in a single day. Each one was
00:05:08
matched to a specific spot in the frame,
00:05:10
and each was lifted straight from the
00:05:12
street, bypassing the need for ground
00:05:15
storage entirely. This relentless rhythm
00:05:18
kept the city's skyline rising one beam
00:05:21
at a time. At the heart of every
00:05:24
skyscraper job in the 1910s stood the Ge
00:05:27
Derek, a machine as vital as the steel
00:05:30
itself. Unlike today's tower cranes,
00:05:33
these derks were simple in shape but
00:05:35
powerful in action. Each one featured a
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tall mast, often 50 to 75 ft high,
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anchored directly to the steel frame
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below. Four or more wire rope guidelines
00:05:48
stretched out from the mast's top, tied
00:05:50
off to the building's columns or heavy
00:05:52
timber blocks on lower floors and even
00:05:55
the street.
00:05:56
These lines held the mast steady,
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fighting the constant push of wind and
00:06:01
the shifting weight of every lift. The
00:06:04
real muscle came from steam. Boilers
00:06:07
fired up hours before dawn, feeding
00:06:10
pressure to hoisting engines tucked onto
00:06:13
the building's skeleton or sometimes at
00:06:15
street level. These engines turned drums
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that wound up thick wire rope, often
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supplied by Robing, the same company
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behind the Brooklyn Bridge. A single
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Derek working with a steam hoist rated
00:06:28
at 50 to 100 horsepower could lift 10
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tons straight into the sky, swinging a
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beam from the curb up to the 30th floor
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in minutes. The rope, sometimes more
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than 1 in thick, ran through a maze of
00:06:42
pulleys at the mast head, multiplying
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the force and allowing precise control
00:06:47
over each load. The layout was a study
00:06:50
in balance. Every guideline had to be
00:06:53
tensioned just right using turnbuckles
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and shackles anchored to the steel. Too
00:06:58
much slack and the mast would sway
00:07:00
dangerously. Too tight and the mast
00:07:03
could bend under its own stress. Iron
00:07:06
workers checked the plum with a simple
00:07:08
bob and string, making fine adjustments
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before a single beam ever left the
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ground. Each anchorage, whether a
00:07:15
bracket riveted to a column or a timber
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block set in concrete, had to withstand
00:07:20
forces of 20 or 30 tons, a test of both
00:07:24
engineering and nerve. What set the
00:07:27
guide Derek apart was its ability to
00:07:29
climb.
00:07:31
As the building grew, the Derek could
00:07:33
not simply stay put. Crews would unbolt
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its base, slacken and shift each
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guideline, and then using an auxiliary
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hoist, lift the entire mast and stool up
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to the next floor. This process, known
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as jumping, could take a few hours. The
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mast would hang briefly in midair,
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steadied by its guidelines, before
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settling onto a new set of beams, ready
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to lift again. On the Woolworth
00:08:01
building, Derek's jumped every few
00:08:03
floors, keeping pace with the rising
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steel. Each move required careful
00:08:08
choreography, never fewer than three
00:08:11
guys held under tension, with men
00:08:13
stationed at every anchor and a
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signalman relaying commands to the hoist
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engineer below. The Derek's reach was
00:08:20
its secret weapon. From a corner of the
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frame, the boom could swing in a full
00:08:24
circle, picking up beams from the street
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and placing them deep inside the growing
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structure. On tight city lots, this
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flexibility was essential. With no room
00:08:35
to store steel, every lift had to be
00:08:38
timed to the minute. The Derek moving
00:08:40
beams from wagon to frame in a single
00:08:43
fluid motion.
00:08:45
Through this blend of steam, wire, and
00:08:47
human skill, the guy Derek made the
00:08:50
impossible seem routine. Lifting 10 ton
00:08:53
beams hundreds of feet high one after
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another. As the city's skyline took
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shape,
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a steel beam weighing close to two tons,
00:09:03
hangs from the Derek's hook, swung
00:09:05
skyward by steam and wire rope. It rises
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above the street, guided by tag lines,
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gripped tight in calloused hands. On the
00:09:14
skeleton frame, two iron workers known
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as connectors waits balanced on a flange
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12 in wide, eyes locked on the moving
00:09:22
load. A signal man perched just out of
00:09:26
the swing flashes a quick hand sign.
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Down below, the hoist engineer eases the
00:09:31
drum and the beam floats closer.
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Pendulum steady, the connectors pull the
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tag lines, twisting the steel into
00:09:38
position and easing it onto the waiting
00:09:40
columns. A slip, a gust, or a missed
00:09:43
signal could send the beam swinging, but
00:09:45
the men move with practiced calm. Once
00:09:48
the beam is lowered into place, the real
00:09:51
choreography begins. Drift pins, tapered
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steel rods are hammered into bolt holes,
00:09:58
forcing the heavy steel into perfect
00:10:00
alignment.
00:10:02
The clang of metal echoes across the
00:10:04
frame. Temporary bolts slide through the
00:10:07
holes, wrenched tight by hand to hold
00:10:09
the joint steady. This step alone can
00:10:12
take 20 minutes, sometimes more if the
00:10:14
holes resist or the steel flexes in the
00:10:16
wind. Every connection must be true. A
00:10:19
crooked beam means delays for the entire
00:10:22
floor above. Now comes the riveting
00:10:25
gang, a four-man team moving with the
00:10:27
rhythm of a practiced crew. The heater
00:10:30
stands at a small coal forge, flames
00:10:33
licking at a nest of rivets. With tongs,
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he pulls a cherry red rivet from the
00:10:37
fire and arcs it through the air, a
00:10:40
glowing streak against the city haze.
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The catcher, crouched on the beam, snags
00:10:45
it in a blackened tin bucket bare
00:10:48
seconds before it cools. He jams the hot
00:10:51
rivet into the waiting hole. On the far
00:10:53
side, the bucker up braces a heavy steel
00:10:56
bar against the factory head, steadying
00:10:58
the rivet with his full weight. The
00:11:01
riveter, wielding a pneumatic gun fed by
00:11:03
hoses that snake up from compressors on
00:11:05
the street, drives the tool against the
00:11:08
glowing shank. The gun roars, flattening
00:11:11
the end in a matter of seconds,
00:11:13
mushrooming the metal into a perfect
00:11:15
dome. Each rivet must be driven before
00:11:18
it loses its heat. 10, maybe 15 seconds
00:11:21
from forge to final head. If a rivet
00:11:24
cools too soon, it is knocked out and
00:11:27
the process starts again. This sequence
00:11:30
repeats rivet after rivet, connection
00:11:32
after connection. A single beam might
00:11:35
require a dozen or more rivets. Each one
00:11:38
installed in this rapid fire ballet. On
00:11:41
a good day, a single gang can drive more
00:11:43
than 500 rivets. The sound of their work
00:11:46
ringing out over the city. The pace is
00:11:49
relentless. As soon as one beam is
00:11:52
finished, the gang moves to the next
00:11:54
connection, following the rising
00:11:56
skeleton higher into the sky. It takes
00:11:59
nearly an hour from the moment a beam
00:12:01
leaves the street to its final permanent
00:12:03
lock in the frame. Every step, hoisting,
00:12:07
aligning, bolting, riveting, [music]
00:12:10
depends on the crew's coordination and
00:12:12
nerve. The building grows joint by
00:12:15
joint, held together by the unbroken
00:12:17
rhythm of men and machines. The beat of
00:12:20
steel against steel.
00:12:22
100 ft above the city, iron workers
00:12:25
moved with practiced confidence along
00:12:27
beams just 12 in wide. There were no
00:12:30
safety lines, no harnesses, only leather
00:12:33
sold boots and the balance that came
00:12:35
from years on the steel. Every step was
00:12:38
a test of nerve and muscle. Lunch breaks
00:12:41
happened right there on the frame, a
00:12:43
sandwich in one hand and the city
00:12:45
sprawling far below. The only thing
00:12:48
between a worker and empty air was
00:12:50
experience.
00:12:52
Precision mattered at every moment. A
00:12:54
two-tonon beam hoisted by the Derek
00:12:57
could swing like a pendulum with the
00:12:59
smallest gust or a misread signal.
00:13:02
Communication was its own kind of
00:13:03
lifeline. Voices vanished in the roar of
00:13:06
steam engines and city traffic. So crews
00:13:09
relied on hand signals, whistles, and
00:13:11
the sharp eyes of the signal men. One
00:13:14
hand raised meant hoist. A quick wave to
00:13:17
the left or right told the hoist
00:13:19
engineer which way to swing the load.
00:13:21
Flags and megaphones helped foremen on
00:13:24
the ground direct the flow, but at
00:13:26
height, gestures and instinct carried
00:13:28
the day. The signal man was the silent
00:13:31
conductor of this operation. He stood
00:13:33
where he could see both the beam and the
00:13:35
hoist operator relaying each instruction
00:13:38
with crisp movements. Only the signalman
00:13:41
spoke to the engineer. No one else
00:13:42
interrupted.
00:13:44
On a busy site, dozens of lifts could be
00:13:47
happening at once, each one demanding
00:13:49
absolute clarity. If a signal was missed
00:13:52
or delayed, a swinging beam could
00:13:55
threaten anyone in its path. Even a
00:13:58
small error could turn a routine hoist
00:14:00
into a life-threatening crisis. Iron
00:14:02
workers guided beams with taglines,
00:14:05
ropes tied to the load for control. They
00:14:07
used their bodies to steady the steel,
00:14:10
muscles straining against the weight and
00:14:12
momentum. Every placement required
00:14:14
teamwork. One man watching the swing,
00:14:17
another calling out, a third bracing for
00:14:20
the next move.
00:14:22
Apprentices learned to read not just
00:14:24
signals, but the subtle cues of the
00:14:26
crew, the set of a jaw, the tension in a
00:14:29
rope, the rhythm of boots on steel.
00:14:33
Falls were common. The job was
00:14:34
dangerous, but the pace never slowed.
00:14:37
The culture on these sites demanded
00:14:39
toughness and trust. Each worker counted
00:14:42
on his partners to do their part. To
00:14:44
catch a signal, to hold a line, to keep
00:14:47
the steel moving and the building
00:14:49
rising. In this world, precision and
00:14:52
coordination were not just skills. They
00:14:55
were the only protection a man had. At
00:14:58
792 ft, the Woolworth building did not
00:15:02
just stretch the limits of engineering.
00:15:04
It tested the boundaries of what was
00:15:06
physically possible with the methods
00:15:08
available in the 1910s.
00:15:10
Wind was a constant adversary. When
00:15:13
gusts climbed above 40 mph, every hoist
00:15:17
was halted. A two-tonon beam suspended
00:15:20
from a derek could swing 15 ft or more
00:15:22
in a gale, putting workers in the
00:15:24
building itself at risk. During one
00:15:27
storm in 1911, a sudden blast at the
00:15:30
25th floor forced crews to lash tag
00:15:33
lines to the columns and stand down for
00:15:35
two days. No amount of money or
00:15:38
management pressure could change the
00:15:39
weather or speed up the careful process
00:15:41
of jumping derks and securing each piece
00:15:44
of steel. Material supply brought its
00:15:47
own set of limits. Steel orders for a
00:15:49
skyscraper could take 3 to 6 months for
00:15:52
mills in Pittsburgh or Gary to fill with
00:15:54
every beam rolled to precise
00:15:56
specifications.
00:15:58
Delays at the mill or on the rails
00:16:00
rippled through the entire job. If a
00:16:02
shipment arrived out of order, there was
00:16:04
nowhere in Manhattan to store the extra
00:16:06
steel. Each piece had to be hoisted
00:16:09
almost immediately. The rhythm of
00:16:11
construction was set by these
00:16:13
constraints, not by the ambitions of
00:16:15
architects or the size of a developer's
00:16:17
budget. The scale of these projects was
00:16:20
staggering. The Woolworth building's
00:16:23
frame alone required over 1,000 tons of
00:16:26
steel in less than a week at peak pace.
00:16:30
The Singer Building and Metropolitan
00:16:31
Life Tower, both topping 600 ft, rose on
00:16:35
city blocks barely wider than the towers
00:16:37
themselves. Every lift, every connection
00:16:41
was a product of relentless coordination
00:16:43
between mills, railroads, wagon teams,
00:16:46
and the iron workers perched on the
00:16:48
frame. The city's skyline became a kind
00:16:51
of living schedule. Each new floor a
00:16:54
testament to the discipline and timing
00:16:55
of hundreds of men and machines. But the
00:16:58
cost was measured not just in steel and
00:17:01
time, but in lives. Casualty records
00:17:04
from the 1910s are incomplete, but the
00:17:07
dangers were impossible to ignore.
00:17:10
Falls, crushing injuries, and hoisting
00:17:12
accidents were part of the daily
00:17:14
routine. When the Empire State Building
00:17:17
went up two decades later, five worker
00:17:20
deaths were officially recorded, likely
00:17:22
an undercount, but still a benchmark for
00:17:25
progress. In the 1910s, most deaths went
00:17:28
unttracked, except in the ledgers of the
00:17:30
Iron Workers Union. Widows funds, first
00:17:34
established in 1906, offered families a
00:17:37
few hundred dollars, often $500 or less,
00:17:40
raised directly from the pockets of
00:17:42
fellow workers. Union pressure slowly
00:17:45
pushed for better safety. But change
00:17:47
came in increments, not leaps. The
00:17:50
buildings that still stand today are
00:17:52
monuments to that risk as much as to
00:17:54
engineering. Every beam, every rivet is
00:17:57
a record of skill, sacrifice, and a
00:18:00
system that worked because it had to,
00:18:02
within the hard limits of wind,
00:18:04
material, and human endurance.
00:18:08
Today, nearly every skyline still rests
00:18:11
on frames set by calloused hands and
00:18:13
steam powered derks, built without
00:18:16
modern cranes, but engineered for
00:18:18
endurance. As cities push ever higher
00:18:21
with new technology, these century old
00:18:24
towers quietly prove that human
00:18:27
ingenuity, not just machinery, shapes
00:18:29
what lasts. The steel above us remains a
00:18:32
daily reminder. Progress rises tallest
00:18:35
when skill and courage do the heavy
00:18:37
lifting. Thanks for watching. Share your
00:18:40
thoughts below.

Description:

This documentary explains how skyscrapers were built in the 1910s without modern cranes, long before today’s construction technology existed. Engineers and workers relied on steam-powered hoists, derricks, pulleys, and manual labor to lift massive steel beams hundreds of feet into the air. We break down how materials were raised floor by floor, how rivet gangs worked at extreme heights, and why early skyscraper construction was both fast and incredibly dangerous. With minimal safety regulations and tight deadlines, crews pushed human endurance to its limits. From logistics to engineering ingenuity, this breakdown shows how early 20th-century builders reshaped city skylines — using tools that seem almost impossible by today’s standards.

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    The best quality formats are FullHD (1080p), 2K (1440p), 4K (2160p) and 8K (4320p). The higher the resolution of your screen, the higher the video quality should be. However, there are other factors to consider: download speed, amount of free space, and device performance during playback.

question iconWhy does my computer freeze when loading a "How They Built Skyscrapers Without Cranes In The 1910s" video?arrow icon

    The browser/computer should not freeze completely! If this happens, please report it with a link to the video. Sometimes videos cannot be downloaded directly in a suitable format, so we have added the ability to convert the file to the desired format. In some cases, this process may actively use computer resources.

question iconHow can I download "How They Built Skyscrapers Without Cranes In The 1910s" video to my phone?arrow icon

    You can download a video to your smartphone using the website or the PWA application UDL Lite. It is also possible to send a download link via QR code using the UDL Helper extension.

question iconHow can I download an audio track (music) to MP3 "How They Built Skyscrapers Without Cranes In The 1910s"?arrow icon

    The most convenient way is to use the UDL Client program, which supports converting video to MP3 format. In some cases, MP3 can also be downloaded through the UDL Helper extension.

question iconHow can I save a frame from a video "How They Built Skyscrapers Without Cranes In The 1910s"?arrow icon

    This feature is available in the UDL Helper extension. Make sure that "Show the video snapshot button" is checked in the settings. A camera icon should appear in the lower right corner of the player to the left of the "Settings" icon. When you click on it, the current frame from the video will be saved to your computer in JPEG format.

question iconHow do I play and download streaming video?arrow icon

    For this purpose you need VLC-player, which can be downloaded for free from the official website https://www.videolan.org/vlc/.

    How to play streaming video through VLC player:

    • in video formats, hover your mouse over "Streaming Video**";
    • right-click on "Copy link";
    • open VLC-player;
    • select Media - Open Network Stream - Network in the menu;
    • paste the copied link into the input field;
    • click "Play".

    To download streaming video via VLC player, you need to convert it:

    • copy the video address (URL);
    • select "Open Network Stream" in the "Media" item of VLC player and paste the link to the video into the input field;
    • click on the arrow on the "Play" button and select "Convert" in the list;
    • select "Video - H.264 + MP3 (MP4)" in the "Profile" line;
    • click the "Browse" button to select a folder to save the converted video and click the "Start" button;
    • conversion speed depends on the resolution and duration of the video.

    Warning: this download method no longer works with most YouTube videos.

question iconWhat's the price of all this stuff?arrow icon

    It costs nothing. Our services are absolutely free for all users. There are no PRO subscriptions, no restrictions on the number or maximum length of downloaded videos.