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TopDir is a human edited web directory with various categories, a collection of hand-picked web resources for visitors

TopDir offers free website promotion for webmasters and website owners. Relevant search results and many categories for adding and promoting websites. Free web promotion for websites at TopDir directory. Submit your url for review. A collection of hand-picked web resources for visitors. This page is focused on one particular aspect of Kids and Teens, School Time, Science, Technology, Buildings and Bridges.

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    http://www.newbaybridge.org/classroom/engineeringfor.html   » Engineering for Earthquakes  

    [ Kids/Teens/Mature Teens ] - Practice making bridges that are strong enough to withstand earthquakes. Page includes background information about earthquakes in general.

    http://www.nireland.com/bridgeman/   » About Bridges [ Teens/Mature Teens ] - Features pictures of famous bridges, design basics, and a history of materials used for bridges.

    http://www.matsuo-bridge.co.jp/english/bridges/index.shtm   » The Basic Bridge Types [ Kids/Teens ] - From the Matsuo Bridge Company, an overview of the six basic types of bridges, with statistics about existing examples of each [may not work in all browsers].

    http://www.pghbridges.com/basics.htm   » Bridge Basics - A Spotter's Guide to Bridge Design [ Kids/Teens/Mature Teens ] - Pictures, history, and structural explanations of many different types of trusses and bridges.

    http://www.jhu.edu/~virtlab/bridge/truss.htm   » Bridge Designer [ Teens/Mature Teens ] - This free program allows you to design a virtual truss, and then put a load on it. It will show you how the load is spread throughout the truss.

    http://www.hevanet.com/bridgink/   » Bridge of the Month Quiz [ Teens ] - Features a picture of a bridge that changes every month to identify. Includes pictures of previous month's bridges.

    http://www.tfhrc.gov/pubrds/summer95/p95su23.htm   » Bridge Research: Leading the Way to the Future [ Mature Teens ] - An article that discusses the role and value of research in highway bridges.

    http://www.lib.berkeley.edu/news_events/bridge/   » Bridging the Bay [ Teens/Mature Teens ] - An online exhibit of the bridges in the San Francisco Bay area. Includes statistics, history, and facts about each of the six bridges. Also includes a section on unbuilt projects.

    http://www.pbs.org/wgbh/nova/bridge/build.html   » Build a Bridge [ Teens/Mature Teens ] - Learn about the four steps to building a bridge. Play architect and engineer with the online game.

    http://library.thinkquest.org/11686/   » Build n Bust A Bridge [ Teens/Mature Teens ] - Build and bust a virtual bridge.

    http://www.pbs.org/wgbh/buildingbig/   » Building Big [ Kids/Teens/Mature Teens ] - Explores the world of megastructures, including bridges, domes, skyscrapers, dams, and tunnels. From PBS.

    http://www.sciencemuseum.org.uk/antenna/building/   » Building to the Limits [ Kids/Teens/Mature Teens ] - Find out how people are working together to create buildings that are safer, stronger, smarter, greener and more eye-catching than ever before.

    http://members.cox.net/cv1/   » Canton Viaduct [ Teens/Mature Teens ] - Information and pictures of the Canton Viaduct. Includes pictures of models and timeline of its history. Designated a National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 1999.

    http://www.factmonster.com/ipka/A0772711.html   » Fact Monster: Notable Modern Bridges of the World [ Kids/Teens/Mature Teens ] - Statistics about a handful of bridges, including name, location, length of span, and year completed.

    http://www.factophile.com/show.content?action=browse&catid=99   » Factophile: Major Bridges [ Teens/Mature Teens ] - Statistics about bridges, organized by bridge type.

    http://www.bridgesite.com/funand.htm   » Fun and Learning About Bridges [ Kids/Teens/Mature Teens ] - Index with links to resources about bridges.

    http://www.faculty.fairfield.edu/jmac/rs/bridges.htm   » Geometry of Bridge Construction [ Teens/Mature Teens ] - Diagrams of the forces acting on bridges, pictures, and examples.

    http://www.pbs.org/wgbh/buildingbig/bridge/basics.html   » How Bridges Work [ Kids/Teens/Mature Teens ] - Review of how the forces act on different types of bridges. Includes photos of real bridges.

    http://www.howstuffworks.com/bridge.htm   » Howstuffworks.com: How Bridges Work [ Kids/Teens/Mature Teens ] - An in-depth look at how beam and suspension bridges work.

    http://library.thinkquest.org/10201/   » The Million Dollar Bridge [ Teens/Mature Teens ] - ThinkQuest site about a bridge in Alaska. Includes sections on architecture, current construction, timeline, photos, history, geography, and related links.

    http://www.pbs.org/wgbh/nova/bridge/   » NOVA Online - Super Bridge [ Teens/Mature Teens ] - Information about the four major types of bridges. Test your knowledge by matching each bridge to the correct location.

    http://www.yale.edu/ynhti/curriculum/units/2001/5/01.05.08.x.html   » The Physics Of Bridges [ Teens/Mature Teens ] - Curriculum unit that will explain how scientists and engineers utilize physical science concepts when building a bridge.

    http://www.ecs.csun.edu/~shustov/ShakeZone.htm   » ShakeZone for Kids [ Kids/Teens/Mature Teens ] - Classroom exercises and video footage of earthquake damage and shake table testing of building models.

    http://en.structurae.de/   » Structurae [ Teens/Mature Teens ] - International Database and Gallery of Structures, intended to provide information on structures of interest to the civil engineer. Includes alphabetical index of architectural structures. Intended for civil engineers, but basic information will be useful.

    http://www.ce.ufl.edu/~mih/activities/cdrom/civil/samplemain.html   » Truss Bridge Laboratory, University of Florida Civil Engineering [ Teens/Mature Teens ] - Instruction and information on truss bridge structures.

    http://bridgecontest.usma.edu/   » West Point Bridge Design Contest [ Teens/Mature Teens ] - An annual virtual bridge design contest. The software for the previous competition can be downloaded any time.


TopDir is a human edited web directory with various categories. Our mission is to organize theme based websites and remove the clutter from the information. We strive to provide context based website results to our visitors. This directory is an evolving one and we regularly add new categories, if there is a necessity. Members can suggest new categories and websites for inclusion. This is one stop promotion site for webmasters and website owners. We invite you to browse the categories and suggest your website url for an editor review. This page is focused on one particular aspect of Kids and Teens, School Time, Science, Technology, Buildings and Bridges.

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