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Other covered bridges in Germany, [5] the United States, and elsewhere might be seen as "buildings" in that their roof protects an enclosed area, but the purpose of the covering is to preserve the structure and the enclosed space is primarily for traffic to pass through. The term "covered bridges" is also used for structures in China such as ...
Skyscraper design requires a means of draft block, such as revolving doors, to prevent the chimney effect of the tall structure from sucking in air at high speed at the base and ejecting it through vents in the roof while the building is being heated, or sucking in air through the vents and ejecting it through the doors while being cooled, both ...
This movable bridge is also known as the “Slauerhoffbrug ‘Flying’ Drawbridge” or Frog Bridge (Dutch: Kikkerbrug), the last because of its shape in the down position. One of the main designers is Emile Asari. A tail bridge can quickly and efficiently be raised and lowered from one pylon (instead of hinges).
This gives the bridge an unfinished saw-toothed appearance when viewed from the side or below, and makes the design very easy to identify. If the bridge deck is carried along the bottom of the truss (called a through truss) or if a lightweight lower chord is present, identification is made solely by the multiple diagonal members emanating from ...
Two or more holes are cast through the center of the angle block, to allow the vertical posts to pass through and be anchored on the other side of the chord. [1] End panels are the four panels on either side of the end of a Howe truss bridge. These should be the same height as the chords, but not more. [12]
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Nowadays clapper bridges are only used as footbridges. The Kapellbrücke is a 204-metre-long (669 ft) footbridge crossing the River Reuss in the city of Lucerne in Switzerland. It is the oldest wooden covered bridge in Europe, and one of Switzerland's main tourist attractions. The bridge was originally built c. 1365 [6] as part of Lucerne's ...
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