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 Building / Architecture / 1483
1482  |  1484
Subject: 
Re: Suspension Bridge
Newsgroups: 
lugnet.build.arch
Date: 
Fri, 21 Mar 2003 01:16:16 GMT
Viewed: 
2341 times
  
In lugnet.build.arch, Ross Crawford writes:
In lugnet.build.arch, Patrick O'Donnell writes:
I got a scanner for my birthday on March 9 and I'm now getting around to
posting my pics of a suspension bridge I built nearly 8 years ago!  This is
my first attempt at putting something on BrickShelf.

There are four pictures in this folder.  The first was taken in my basement,
and the remaining three were taken while the bridge was on display at the
elementary school where my wife teaches. In viewing my pics on BrickShelf I
have a few questions.  I'd appreciate if someone can be of assistance.

#1 Why is the quility of the last three pictures so poor as compared to the
first picture?

This may be a combination of lighting and focus - where lighting is poor, it's
difficult to get a clear picture. Also if it was cold your lens may have had
condensation on it.

Thank you ROSCO for viewing my suspension bridge and taking the time to be
of assistance by responding to the BrickShelf questions.

The pictures on BrickShelf are uploaded from my folder of scanned pictures.
My pictures look fine and I'm very impressed (almost to the point of
giddyness) with the quaility of the scanned images in my folder of those
pictures.  The images on BrickShelf are so blotchy (except for the first
one.) Could it be with the upload from my folder to BrickShelf?


#2 Why do the pictures appear massive - how can I make them to fit the
screen like most everybody elses?

Use an image manipulation program to crop / resize it. I use and recommend
http://www.irfanview.com/

Thanks for the link.  I'm starting to get discouraged having to do work to
have pictures on BrickShelf.

http://www.brickshelf.com/cgi-bin/gallery.cgi?f=37444

Bridge stats:

Total length - 32'
Main Span (distance between towers) - 18'
Total pieces - 17,000+
Hours to build - 200 over a 6 month period
Hours to disassemble in sections in basement to move to the school - 8
Hours to reassemble at the school - 12

As is quite visible, there are non-LEGO elements in this MOC.  The main
cables are 5/8ths nylon rope.  Don't use cotton clothsline as it stretches
way too much!  The suspenders are again a nylon string.  Under the
anchorages (the white structures at the ends of the bridge) are 24" X 24"
concrete stepping pavers in which the main cables are affixed to.

I didn't attempt to model this bridge after any particular bridge.  Like an
engineer, I had to make the best with what I had.  There are some
similarities such as, the blue towers and cross bracing from the Ben
Franklin Bridge in Philadelphia, the point where the suspenders attach to
the deck being well out from the roadway like that of the Verrazano Narrows
Bridge in NYC, and the steep roadway of the main span from the Deer Isle
Bridge up in Maine.  The roadway (deck) on this bridge is not common for
American bridges.  American suspension bridges have thick trusses due to the
collapse of the 1st Tacoma Narrows Bridge or better known as Galloping
Gertie.  In Europe, sleek airfoil decks are the norm, thus allowing wind to
smoothly glide over and under the deck.  There is currently a suspension
bridge under construction to replace one of the Carquinez Straits bridges in
California.  It will be the first major suspension bridge in North America
to have the airfoil deck.  Below is a link to a photo of the bridge with
some of the deck sections in place.

http://www.franklinnewbridge.org/wpe40.jpg

Thanks Patrick! I found the profile of the deck interesting, I've never seen a
suspension bridge with that much rise & fall!

Here is a link to the Deer Isle Bridge.  Check out the rise & fall on this
real one!

http://www.structurae.de/en/photos/img6063.php



I'll be following this post in the near future with my Cable-Stayed bridge.

Cool! Be looking forward to it 8?)

ROSCO

I started to add the folder of cable-stayed pics to BrickShelf and I'm
experiencing the same poor oversized quality as the suspension bridge
photos.  I'll try my best to have presentable images to view.

Patrick

PS what does the "8?" mean?



Message has 1 Reply:
  Re: Suspension Bridge
 
(...) 8?) is a 3-D smiley instead of :-) ROSCO (22 years ago, 21-Mar-03, to lugnet.build.arch)

Message is in Reply To:
  Re: Suspension Bridge
 
(...) This may be a combination of lighting and focus - where lighting is poor, it's difficult to get a clear picture. Also if it was cold your lens may have had condensation on it. (...) Use an image manipulation program to crop / resize it. I use (...) (22 years ago, 20-Mar-03, to lugnet.build.arch)

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