## how to design a bridge articles

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## Howe Truss

By on January 18, 2011

The Howe Truss was designed by William Howe in 1840. It used mostly wood in construction and was suitable for longer spans than the Pratt truss. Therefore, it became very popular and was considered one of the best designs for railroad bridges back in the day. Many Howe truss bridges exist in the North West United States, where wood is plentiful.

## Pratt Truss

By on January 11, 2011

The Pratt Truss was designed by Thomas and Caleb Pratt in 1844. It became popular for railway bridges because it was able to have long spans. The Pratt has many variations, most with their own unique name. For instance, the Baltimore, Pennsylvania, and the Parker are all based off the Pratt.

## Warren Truss

By on January 4, 2011 - Modified January 11, 2014

The Warren Truss was patented by James Warren in 1848. It has been around a while. It is one of the most popular bridge designs and examples of it can be found everywhere. The Warren Truss uses equilateral triangles to spread out the loads on the bridge. This is opposed to the Neville…

## K Truss Analysis

By on May 15, 2008 - Modified January 13, 2014

The K Truss design was a variant from the Parker truss design. The Parker, in turn, came from the Pratt truss. The idea of the K truss is to break up the vertical members into smaller sections. This is because the vertical members are in compression. The shorter a member is, the more in can resist buckling from compression.

## What Bridge Design Holds the Most Weight?

By on July 27, 2007

Probably the question I get asked the most is “What bridge design holds the most weight?” or “What bridge design is the strongest?”

The answer to that question is not simple and probably is not going to be what you expect. The truth is, I cannot answer the question. There are too many variables that are not being defined.

## 5 Steps to Building a Model Bridge

By on June 11, 2007 - Modified November 28, 2014

This ebook, 5 Steps to Building a Model Bridge, answers the most common questions people have about building bridges. In the ebook I outline the steps of building a model bridge, and then walk people through the actual construction of a bridge. The ebook contains many photos and illustrations, as well as 25 bonus tips.

## 25 Bridge Building Tips

By on January 2, 2006 - Modified January 11, 2014

1. Humidity affects the weight of your bridge. Keep your bridge in a closed container with a few grains of rice. or some silica gel packets. 2. Go easy with the glue bottle. As a general rule of thumb, if you can see it than you are using too much. 3. Keep your hands clean! Oils and grease from your skin can ruin your glue joints. 4. Perfect practice makes perfect. The more bridges you build, the better your construction […]

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