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Douglas Butler Bridge Book An explantation of movable bridge technical drawings

Introduction Douglas Butler Bridge Book

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Introduction Douglas Butler Bridge Book
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Industrial Cities or Port bridges
Duplicate Movable Bridges
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How I got interested in drawing movable bridges...
 
Since in 2000 I started  printing out photos of movable bridges ,and  photo copied from books. That 's when I have started drawing movable historic bridges of all types.

How I got interested in drawing movable bridges...

Since 2000, I started printing out photos of movable bridges, and photocopied images from books. That's when I have started drawing movable historic bridges of all types.

My name is Douglas Butler, and I became interested in movable bridges when I was younger, when I started drawing ships and ore docks. My drawing are both technical and artistic, because... to show how and have an understanding of how they operate. I will explain the technical differences in the following types of movable bridges:


Bascule:  Bascule bridges are movable bridges that pivot up on one end, or in double leaf examples pivot at both ends to open in the middle.

Lift: Vertical lift bridges are movable bridges that lift like an elevator with both towers on each side of the lift span.

Swing: Swing bridges are movable bridges that Pivots or swing aside for marine traffic. Edit Text

This text is mostly for the bridge department workers who works on movable bridge projects or the residents who enjoys the drawings, the history of movable bridges that are pleasant to look at while it's in operation and the technology of science of my drawings.

This article contributed by Douglas Butler.

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