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Skyscraper History | National Geographic


a city in the sky nearly half a

a city in the sky nearly half a kilometer saw the Boers debye is the

kilometer saw the Boers debye is the

kilometer saw the Boers debye is the pinnacle of skyscraper edge

it owes its success to seven key

it owes its success to seven key inventions we have lined up seven

inventions we have lined up seven

inventions we have lined up seven landmark buildings historic Giants of

landmark buildings historic Giants of

landmark buildings historic Giants of the skyscraper world at the heart of

the skyscraper world at the heart of

the skyscraper world at the heart of each one lies a major technological

each one lies a major technological

each one lies a major technological innovation and allowed engineers to

innovation and allowed engineers to

innovation and allowed engineers to reach ever taller into the sky one by

reach ever taller into the sky one by

reach ever taller into the sky one by one traveling up the scale will reveal

one traveling up the scale will reveal

one traveling up the scale will reveal incredible stories behind these

incredible stories behind these

incredible stories behind these structures and the inventions of seven

structures and the inventions of seven

structures and the inventions of seven ingenious leads forward that have

ingenious leads forward that have

ingenious leads forward that have enabled spaceman to have fun big to

enabled spaceman to have fun big to

enabled spaceman to have fun big to bigger into the world’s biggest

the first big obstacle to skyscrapers is

the first big obstacle to skyscrapers is the stair people weren’t willing to walk

the stair people weren’t willing to walk

the stair people weren’t willing to walk lots of flights of stairs stairs and old

lots of flights of stairs stairs and old

lots of flights of stairs stairs and old office buildings were wrong they were

office buildings were wrong they were

office buildings were wrong they were very dark and people weren’t ready to

very dark and people weren’t ready to

very dark and people weren’t ready to climb stairs more than to the second

climb stairs more than to the second

climb stairs more than to the second floor the third floor there’s an obvious

floor the third floor there’s an obvious

floor the third floor there’s an obvious solution to the problem the elevator but

solution to the problem the elevator but

solution to the problem the elevator but then a mechanic from Vermont invents a

then a mechanic from Vermont invents a

then a mechanic from Vermont invents a device that can stop a falling elevator

device that can stop a falling elevator

device that can stop a falling elevator almost instantly it’s a simple yet very

almost instantly it’s a simple yet very

almost instantly it’s a simple yet very clever invention the critical element

clever invention the critical element

clever invention the critical element the elevator rope is secured with a

the elevator rope is secured with a

the elevator rope is secured with a powerful wagon spring mounted on top of

powerful wagon spring mounted on top of

powerful wagon spring mounted on top of the cab this spring connects to a set of

the cab this spring connects to a set of

the cab this spring connects to a set of metal prongs on each side of the

metal prongs on each side of the

metal prongs on each side of the elevator the prongs run along guide

elevator the prongs run along guide

elevator the prongs run along guide rails fitted with the road for TV when

rails fitted with the road for TV when

rails fitted with the road for TV when the rope breaks it triggers a chain of

the rope breaks it triggers a chain of

the rope breaks it triggers a chain of events the spring relaxes and forces the

events the spring relaxes and forces the

events the spring relaxes and forces the metal prongs into the teeth locking the

metal prongs into the teeth locking the

metal prongs into the teeth locking the cab enhance the elevator completely

cab enhance the elevator completely

cab enhance the elevator completely transforms the urban landscape

transforms the urban landscape

transforms the urban landscape this corner was the site of the

this corner was the site of the

this corner was the site of the equitable Life Assurance company’s

equitable Life Assurance company’s

equitable Life Assurance company’s headquarters a building of extraordinary

headquarters a building of extraordinary

headquarters a building of extraordinary significance because it was the first

significance because it was the first

significance because it was the first office building with an elevator and

office building with an elevator and

office building with an elevator and without an elevator the skyscraper would

without an elevator the skyscraper would

without an elevator the skyscraper would be impossible the borscht turbine takes

be impossible the borscht turbine takes

be impossible the borscht turbine takes the idea of the elevator to the extreme

the idea of the elevator to the extreme

the idea of the elevator to the extreme equitable life at seven and a half

equitable life at seven and a half

equitable life at seven and a half stories the Bois de Bie has over 160 a

stories the Bois de Bie has over 160 a

stories the Bois de Bie has over 160 a height that stretches elevator

height that stretches elevator

height that stretches elevator technology to its absolute limit

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