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Feats of Engineering

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Author Topic: Feats of Engineering  (Read 717 times)
Qoais
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« on: February 13, 2010, 12:34:21 am »

When I first opened my e-mail I didn't think this was real.!!  It's called the Hoover Dam Bypass

« Last Edit: February 13, 2010, 12:34:53 am by Qoais » Report Spam   Logged

An open-minded view of the past allows for an unprejudiced glimpse into the future.

Logic rules.

"Intellectual brilliance is no guarantee against being dead wrong."

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Qoais
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Posts: 3423



« Reply #1 on: February 13, 2010, 12:38:30 am »

Creeping closer inch by inch, 900 feet above the mighty Colorado River, the two sides of
a $160 million bridge at the  Hoover  Dam slowly take shape.  The bridge will carry a new
section of  US Route  93 past the bottleneck of the old road which can be seen twisting and
winding around and across the dam itself.
 
When complete, it will provide a new link between the states of  Nevada  and  Arizona  .
In an incredible feat of engineering, the road will be supported on the two massive
concrete arches which jut out of the rock face.



The arches are made up of 53 individual sections each 24 feet long which have been
cast on-site and are being lifted into place using an improvised high-wire crane strung
between temporary steel pylons.
 
The arches will eventually measure more than 1,000 feet across.
At the moment, the structure looks like a traditional suspension bridge. 
But once the arches are complete, the suspending cables on each side will be removed.
Extra vertical columns will then be installed on the arches to carry the road.
The bridge has become known as the Hoover Dam bypass, although it is officially called
the  Mike O'Callaghan-Pat Tillman Memorial Bridge, after a former governor of Nevada
and an American Football player from Arizona who joined the US Army and was killed
in Afghanistan.
Work on the bridge started in 2005 and should finish next year. An estimated 17,000
cars and trucks will cross it every day.
 
The dam was started in 1931 and used enough concrete to build a road from  New York 
to  San Francisco  . The stretch of water it created,  Lake Mead  , is 110 miles long and
took six years to fill.  The original road was opened at the same time as the famous dam in 1936.
 
 An extra note: The top of the white band of rock in Lake Mead is the old waterline prior
to the drought and development in the  Las Vegas  area. It is over 100 feet above the
current water level...

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An open-minded view of the past allows for an unprejudiced glimpse into the future.

Logic rules.

"Intellectual brilliance is no guarantee against being dead wrong."
Qoais
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Posts: 3423



« Reply #2 on: February 13, 2010, 12:42:43 am »



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An open-minded view of the past allows for an unprejudiced glimpse into the future.

Logic rules.

"Intellectual brilliance is no guarantee against being dead wrong."
Qoais
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Posts: 3423



« Reply #3 on: February 13, 2010, 12:45:37 am »



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An open-minded view of the past allows for an unprejudiced glimpse into the future.

Logic rules.

"Intellectual brilliance is no guarantee against being dead wrong."
Qoais
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Posts: 3423



« Reply #4 on: May 22, 2010, 07:25:08 pm »

New Runway in Portugal





In Portugal A special airport
-- the airport's runway with a length of 2781 meters (9124 ft.), of which 1000 meters (3281 ft.)of the runway is supported by 180 pillars,each pillar 50 meters height (about 17 floors) , surprisingly,  the runway is designed  for B-747
Look at the cars parked below the runway



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An open-minded view of the past allows for an unprejudiced glimpse into the future.

Logic rules.

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eyal12
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« Reply #5 on: June 08, 2018, 03:33:58 pm »

Amazing photos, thank you!
was looking all over for this
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