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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