again a low bridge is ruled out because of heavy boat traffic but there’s no
of heavy boat traffic but there’s no
of heavy boat traffic but there’s no airport on the Swedish shore they can
airport on the Swedish shore they can
airport on the Swedish shore they can build as big as they want and they need
build as big as they want and they need
build as big as they want and they need it big very big to clear boat traffic
it big very big to clear boat traffic
it big very big to clear boat traffic the bridge will have to be at least 200
the bridge will have to be at least 200
the bridge will have to be at least 200 feet above the water the center span at
feet above the water the center span at
feet above the water the center span at least 1500 feet long to meet these
least 1500 feet long to meet these
least 1500 feet long to meet these challenges with the best possible bridge
challenges with the best possible bridge
challenges with the best possible bridge the consortium holds a design
the consortium holds a design
the consortium holds a design competition one of the most spectacular
competition one of the most spectacular
competition one of the most spectacular proposals requires building the largest
proposals requires building the largest
proposals requires building the largest arch bridge in the world I think you
arch bridge in the world I think you
arch bridge in the world I think you don’t really get an idea of the
don’t really get an idea of the
don’t really get an idea of the magnitude of this arch you might get it
magnitude of this arch you might get it
magnitude of this arch you might get it from the ship going underneath but it
from the ship going underneath but it
from the ship going underneath but it really is big it would be a monument of
really is big it would be a monument of
really is big it would be a monument of some kind but arch bridges have an
some kind but arch bridges have an
some kind but arch bridges have an Achilles heel is the arch sweeps down
Achilles heel is the arch sweeps down
Achilles heel is the arch sweeps down toward the water the clearance for large
toward the water the clearance for large
toward the water the clearance for large ships decreases eventually to nothing
ships decreases eventually to nothing
ships decreases eventually to nothing you always run the risk that a ship
you always run the risk that a ship
you always run the risk that a ship could get in there therefore you have
could get in there therefore you have
could get in there therefore you have the risk of hitting the bottom part of
the risk of hitting the bottom part of
the risk of hitting the bottom part of the arch and then the whole thing
the arch and then the whole thing
the arch and then the whole thing collapses if not an arch what about a
collapses if not an arch what about a
collapses if not an arch what about a suspension bridge suspension bridge
suspension bridge suspension bridge
suspension bridge suspension bridge technology enables the longest spans of
technology enables the longest spans of
technology enables the longest spans of any design to enormous cables stretch
any design to enormous cables stretch
any design to enormous cables stretch their length
their length
their length shorter cables dangled down to hold the
shorter cables dangled down to hold the
shorter cables dangled down to hold the roadway but connecting cables to more
roadway but connecting cables to more
roadway but connecting cables to more cables make suspension bridges very
cables make suspension bridges very
cables make suspension bridges very flexible trains don’t do well when
flexible trains don’t do well when
flexible trains don’t do well when tracks bend under their roads and
tracks bend under their roads and
tracks bend under their roads and railway traffic is so heavy that if you
railway traffic is so heavy that if you
railway traffic is so heavy that if you have a suspension bridge you will find
have a suspension bridge you will find
have a suspension bridge you will find if you look at it from the side that if
if you look at it from the side that if
if you look at it from the side that if the Train will always go up a little
the Train will always go up a little
the Train will always go up a little pole she were always going uphill all
pole she were always going uphill all
pole she were always going uphill all the time suspension is ruled out arch
the time suspension is ruled out arch
the time suspension is ruled out arch ruled out so engineers turn to the one
ruled out so engineers turn to the one
ruled out so engineers turn to the one design that can answer all their
design that can answer all their
design that can answer all their concerns a cable-stayed bridge its
concerns a cable-stayed bridge its
concerns a cable-stayed bridge its structure is rigid enough for heavy
structure is rigid enough for heavy
structure is rigid enough for heavy train traffic because the support cables
train traffic because the support cables
train traffic because the support cables attached directly to the towers
and there is a bonus cable-stayed
and there is a bonus cable-stayed bridges are cheaper to build than
bridges are cheaper to build than
bridges are cheaper to build than suspension bridges not having the two
suspension bridges not having the two
suspension bridges not having the two enormous main cables saves tons of steel
it’s a winner the best design to meet
it’s a winner the best design to meet all the orisons needs is a towering
all the orisons needs is a towering
all the orisons needs is a towering two-level cable-stayed bridge
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