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A drawbridge or draw-bridge is a type of movable bridge typically associated with the entrance ... In France, working drawbridges survive at a number of châteaux, including the Château du ...

How draw bridge is made - material, history, used, structure, History ...


The type of movable bridge that most people think of as a draw bridge is similar to ... The modern era of movable bridge construction began in the mid-nineteenth .... Additional locks can secure the leaves in their open position so wind does not  ...

Castle Drawbridge - Castles


Learn about the purpose, design and origin of the Castle Drawbridge. ... a castle Castle Drawbridge; What was the purpose of the Castle Drawbridge and how did it help defenses? ... The Castle Drawbridge - A Modern Bascule Bridge ... The drawbridge works by counterbalance so that when one end is lowered the other is ...

Castle Drawbridge - Medieval Times | Medieval Life


The Drawbridge in later medieval times tilted up as it ... Modern drawbridges are called “Bascule ...

www.ask.com/youtube?q=How Does a Modern Drawbridge Work&v=4bWMpB2yf7w
Mar 9, 2007 ... We've all been stuck in traffic waiting for a drawbridge. ... Your browser does not currently recognize any of the video formats available.

Bridges (structure): How do drawbridges know when to open? - Quora


Sep 10, 2015 ... Most drawbridge have 24-7 drawbridge operators or time operators (i.e. ... are bridges called that open for boats to pass and how do they work?

Hydraulic Draw Bridge | - Kid Makers


Unfortunately, this workshop won't teach you how to do that, but it will get you ... A draw bridge (or the technical term: bascule bridge) is a moveable bridge. ... today is the old ones used gear mechanisms, and modern ones use hydraulics.

Opening (Swing, Bascule & Lift) | Types | Bridge Building | Bridges of ...


In some of the modern day bridges the centre shaft lifts the bridge clear of the pier ... Scherzer bridges did not require cofferdams and did not deteriorate from ...

Drawbridge - Technology's History (and Future) of Democratization


Sep 8, 2015 ... Today it's not uncommon for a single consumer to own three or more digital devices between home and work. How does a modern marketer ...

Meet the family who operate the bridges of St. Petersburg - CNN.com


Nov 8, 2013 ... A multiple exposure photograph of a drawbridge in St. Petersburg. ... St. Petersburg, Russia (CNN) -- Every working night for the past 34 years, Sergey Matveev has watched ... "One can do it all by just touching the screen" Matveev said. ... St. Petersburg itself has morphed into a modern, cosmopolitan city.

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How Drawbridges Work | HowStuffWorks


Watch this video from HowStuffWorks to learn how it works. ... how ceramic blades are manufactured and tested on Discovery Channel's "How Do They Do It ?".

Types of Drawbridges | eHow


A drawbridge is a form of bridge that can be moved, lifted or otherwise taken out of the way so no one can ... Modern drawbridges usually serve two functions.

How drawbridges worked | All About History


Aug 6, 2013 ... Get to grips with a medieval drawbridge's key mechanisms. ... How It Works Book of Incredible Earth Sixth Edition. Issue undefined ...