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is a fantastic engineering simulation program that allows students to experience the challenges of efficient structural design. ~Elizabeth Lenox, Teacher, Holy Trinity School, Washington, D.C. I don’t know if we will generate any winners (!), but there are certainly many more eager engineers in our school! I wanted to convey to you the program’s success at our school and the enthusiasm it has created. Students are choosing to stay in during their recess time to design, and the math department has integrated the program into their classes as well. The bridge-building has caught on in many other grade levels throughout the school. The instant feedback that the contest gives about individual standings is fantastic.

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This session motivated many to download the program at home and continue working and competing in their own time. All fifty sixth graders were able to design a working bridge on their own within twenty minutes of individual work time. I just wanted to convey to you what a great, instructive, and user-friendly program this is for middle school students. You can download the Bridge Designer 2016 from the Bridge Designer website.

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But in 2011, Steve’s brother Gene Ressler (former Head of the Department of Electrical Engineering and Computer Science at West Point) rewrote the package in Java, so that it could be run on both Windows and Mac machines. Gene also set up the Bridge Designer as an open source project on SourceForge. Steve Ressler developed the first edition of the Bridge Designer, as part of a larger project to create a nationwide internet-based engineering competition for middle- and high-school students. Because this first edition was written in the Visual Basic programming language, it could only be run on Windows computers.

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Thus, the software offers an engineering design experience that is achievable by kids as young as fourth grade but still suitable for technologically savvy high school and college students. Creating a successful design is simple, but creating an optimal design is quite challenging. With a single button click, the user can determine if the design is successful (i.e., if it passes the load test) and if it is optimal (i.e., if its cost is as low as possible). The Bridge Designer’s integral simulation, animation, and real-time cost calculation features enhance learning by providing on-demand feedback.

minimizing the cost of the design, by adjusting member properties or modifying the geometry of the structure.

graphically modifying the design to strengthen any inadequately designed members and.

displaying a 3-D animation of the load test, with members color-coded to indicate tension (blue) and compression (red).

running a simulated load test of the structure to determine if it is strong enough to carry a standard, code-specified highway loading.

defining the material and mechanical properties of each member in the structure.

graphically creating a structural model.

The software guides the user through the processes of: The Bridge Designer has the look and feel of an industry-standard computer-aided design (CAD) package but is much easier to use.

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The Bridge Designer is a free educational software package designed to provide middle-school and high-school students with a realistic introduction to engineering through the design of a steel highway bridge.