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  1. #1
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    Arrow Bascule Bridge & Control Room - Liverpool March 2010 -

    A bascule bridge is a moveable bridge with a counterweight that continuously balances the span, or "leaf," throughout the entire upward swing in providing clearance for boat traffic. Bascule is a French term for seesaw and balance, and bascule bridges operate along the same principle. They are the most common type of movable bridge in existence because they open quickly and require relatively little energy to operate.

    Bascule bridges may be single or double leaf. Double leaf bridges usually have any truss structure and counterweights below the deck, while a single leaf bridge is typically a truss bridge with an elevated counterweight.

    History..

    Although the bascule bridge has been in use since ancient times, it was not until the 1850s that engineers developed the ability to move very long, heavy spans quickly enough for practical application. The Blagoveshchensky Bridge across the Neva River in Saint Petersburg was the first large bascule bridge, opened in 1850. Since then, all bridges across the Neva and other major rivers in the city (21 in total) were bascule to facilitate navigation, which prevented the city's inhabitants from traveling across the river at night (this remained so until 2003 when the first cable-stayed bridge across the Neva was opened).

    Design...

    Counterweights may be located above the bridge or below the deck of the bridge. There are two common designs of bascule bridge. One is the fixed-trunnion bascule design, which is where the bridge rotates around a large axle called a trunnion to raise. This bridge type is sometimes called the 'Chicago bascule' as this type was developed and perfected there and is used for many of that city's river crossings. Joseph Strauss was a key person who worked on improving the trunnion bascule bridge. Another form of bascule bridge is the Scherzer rolling lift, also known as a Rolling Bascule Bridge. The city of Joliet, Illinois has a number of this structure type. The Scherzer rolling lift bridge essentially rolls or rocks like a simple rocking chair on a track to raise.

    the final piece in my explore of the stanley dock complex is now complete
    its been along time coming and im glad ive finally done this....

    explored with kevsy21 (sorry for smoking all your ciggys lol)

    firstly a few pics of remaining bridges in the east float birkenhead




    and now liverpools answer (the smallest of the 3)





























    a nice warm anyone?





    a plan of the whole circuits and layout found still hanging on the wall




    Last edited by georgie; 19-03-2010 at 08:55 PM. Reason: info

  2. #2
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    Post Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Good stuff m8,pics turned out great and it was great to finally crack it.
    Great explore and a first

  3. #3
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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Ah, David Brown..... A well known tractor and gear manufacturer still going strong in my native Huddersfield.

    Common knowledge is that they used to own Aston Martin and ever since then every car has had a DB on the badge- now you know what it stands for

    great report and cool pics!
    Saviour of the sporran

  4. #4
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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Quote Originally Posted by Kevsy21 View Post
    Good stuff m8,pics turned out great and it was great to finally crack it.
    Great explore and a first
    cheers kev was a top day that m8

  5. #5
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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Nice one
    Well documented, those warehouses look cool as well! Did you get over there as well?
    Nuclear Bunker & Fallout Shelter Cleaning Specialist. One Mushroom Cloud will keep your bunker, radiant and shiney for years! Ring us now for specialist advice

  6. #6
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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Quote Originally Posted by Tankman View Post
    Nice one
    Well documented, those warehouses look cool as well! Did you get over there as well?
    cheers m8 yehh ive done all them warehouses a while ago this was the one ive always wanted to see so it sort of closes the book on exploring that place now (for me anyway)

  7. #7
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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Quote Originally Posted by ERNIE99_UK View Post
    Ah, David Brown..... A well known tractor and gear manufacturer still going strong in my native Huddersfield.

    Common knowledge is that they used to own Aston Martin and ever since then every car has had a DB on the badge- now you know what it stands for

    great report and cool pics!
    ahh right never knew that m8 thanks for the info on that

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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    heres to a little night climb a while back (bit blurry some pics)












  9. #9
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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Nice one fellas, love to see this kind of stuff

    All that gear is located in the elevated control cabin? - there's one near here that used to get stuck open a lot in summer; it would expand while it was raised - it's fixed down now.

  10. #10
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    Default Re: Bascule Bridge & Control Room - Liverpool March 2010 -

    Really nice

    Some impressive machinery and switchgear in there.

    Does any of it still work?.. did you try the "Gongs" lever??

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