The Skyscraper Museum Welcome to the San Diego Zoo BUILDING BIG: All About Bridges Forces Lab Check out how forces affect structures like bridges. Who Builds Big?Meet Miguel Rosales, an architect who designs beautiful bridges, and David Nyarko, an engineer who makes bridges move! Bridge Webography Check out these links to a bevy of bridge resources on the Web. BUILDING BIG: Bridges Learn more about the PBS broadcast program. Buy the DVD
This year is the bicentenary of the birth of Isambard Kingdom Brunel. Much will be done to celebrate it. In "Sweat and Inspiration" by Martin Worth (ISBN0-7509-2675-9), I K Brunel is mentioned as only one of numerous great engineers, the rest of whom are not so much celebrated in Britain. And these are just some of the many 18th and 19th century British engineers who did so much to change our world. There were, and there are, of course, many great engineers around the world, so let's let celebrate Brunel as the representative of all engineers, rather than as some kind of unique genius. Please ignore the rest of this page if you are simply looking for information about bridges, as it contains only general commentary about the contents. What is in these pages? Although the notes in these pages are about structures, they are not about engineering practice. The structures discussed in these pages are mainly heavy and rigid, but those made by people who travel are very different.
BUILDING BIG: Home Page Explore large structures and what it takes to build them with BUILDING BIG™, a five-part PBS television series and Web site from WGBH Boston. Here are the main features of the site: Bridges, Domes, Skyscrapers, Dams, and Tunnels. The Labs Try your hand at our interactive engineering labs. The Challenges Take on the challenges of building big. Wonders of the World Databank Explore our databank of big structures. Local Wonders Investigate big structures near you. Who Builds Big? About the Series Learn more about the shows, and see a chat with David Macaulay. Educators' Guide How to use the Web site, with hands-on activities. Shop Building Big DVDs and books from David Macaulay available at ShopPBS.org. Site Tour Learn more about the features in this site. Site Map The whole site at a glance. Web Credits Feedback Help
Welcome to the Nanozone The Potato Arch - Naked Scientists Kitchen Science 2010 Listen Now Download as mp3 from the show The British Science Festival What you Need What to do Making an arch is simple, you basically want to produce blocks of potato that are slightly wider at the top than the bottom. So cut a few large chips out of the potato which are about 12-15mm square and as straight as possible. Although the blocks you make are tapered in one direction all the other corners should be right angles or your arch will be wonky, so using a set square, or something similar with a good right angle is useful to make the blocks the right shape. When you have made enough blocks to make a semi-circle try putting them together to make an arch. See how the fails if you abuse it, poke it and push it. You often see arches on the top of pillars or walls. Try making the blocks really really thin, does the arch still work? What may happen If you cut the blocks right the arch should be quite stable, unless you make it too thin when it will collapse. Why does it happen? Dave Ansell Multimedia
quot;How Bridges Work" We are a species of bridge builders. Since time out of mind, humans have engineered structures to surmount obstacles, such as, say, Jiaozhou Bay. The body of water is now home to a 26.4-mile (42.5-kilometer) bridge that links the busy Chinese port city of Quingdao to the Chinese suburb of Huangdou. We've tamed steel, stone, lumber and even living vegetation, all in an effort to reach the places, people and things we desire. Although the concept itself is as simple as felling a tree across a creek, bridge design and construction entails serious ingenuity. As a result, we inhabit a planet of bridges, some as ancient as Greece's 3,000-year-old Arkadiko bridge or as unchanged as India's 500-year-old Meghalaya living bridges, which are coaxed into existence from growing tree roots (more on that later). In this article, we'll get to know the bridges we so often take for granted (we literally walk and drive all over them), as well as the designs that make them possible.
Petronas Towers The Petronas Towers Height: 1,483 ft (452 meters) Owners: Kuala Lumpur City Centre Holdings Sendirian Berhad Architects: Cesar Pelli & Associates Engineers: Thornton-Tomasetti Engineers Contractors: Mayjus and SKJ Joint Ventures Topping Out: 1998 Official Opening: August 28, 1999 On April 15, 1996, the Council on Tall Buildings named the Petronas Towers the tallest in the world, passing the torch to a new continent. Although the project's developers, a consortium of private investors in association with the Malaysian government and Petronas, the national oil company, had not originally set out to surpass Chicago's Sears Tower, they did aspire to construct a monument announcing Kuala Lumpur's prominence as a commercial and cultural capital. In the design of American architect Cesar Pelli they found a winning scheme--twin towers of elegant proportions with a slenderness ratio (height to width) of 9.4--that would capture not only the title but the public imagination.
African Art The Eiteljorg Suite of African and Oceanic Art, located on Floor 3, features more than 400 objects. Africa is the world’s second-largest continent and the cradle of humankind. Known for an abundance of natural resources, Africa’s many nations are homes to deserts, equatorial forests, savannahs, mountain ranges, and wetlands. The arrangement of these works of art in the galleries highlights connected themes such as power, the importance of ancestors, and life transitions. The reinstallation is made possible by the generous support of Eli Lilly and Company Foundation. Collection Themes Power In most of Africa, no event, whether good or bad, is ever seen as happening due to chance. Royal Arts As in Europe, Africa’s royal courts have been places of extraordinary displays of ritual, ceremony, wealth, and highly developed art forms. Collecting African Art Private collectors of art often play a crucial role in the development of museum collections.
DESIGN SQUAD . Lesson Plans Content: Structures, Materials Theme: Furniture Engineers design most of the things in our world—buildings, toys, roads, electronic devices, cars, etc. They figure out the best materials to use and how to turn them into the things we use every day. In this hands–on challenge, students consider ways to strengthen weak materials—paper and cardboard—and use them to make furniture that can support a load. In the process, they see how changing a material's shape affects its strength and experiment with how supports reinforce a structure. Students also conduct a peer review of the prototypes and, following the design process, revise, test, and improve their furniture. Get more resources about the engineering of structures. As they build a table with newspaper, students learn strategies for making a weak material stronger, while also exploring structures and supports.
Sears Tower Sears Tower (4.5 million ft2) Chicago, Illinois (1974) 1,454 feet, 443.0 meters, 110 stories Original owners: Sears Roebuck and Company. Architect: Bruce Graham, design partner, Skidmore, Owings and Merrill. Engineer: Fazlur Khan of Skidmore, Owings and Merrill. Constructed 1970-1974 Photo courtesy Skidmore, Owings & Merrill. In the late 1960s, Sears Roebuck and Company, then the world's largest retailer with $8.9 billion in sales, decided to consolidate its administrative operations in downtown Chicago. The first designs were for a boxy structure exclusively for Sears, but the architects and real estate advisors pressed for a taller tower with upper floors for tenants. As designed by architect Bruce Graham and engineer Fazlur Khan of the Chicago office of Skidmore Owings and Merrill (SOM), the structure was a "bundled tube" system of nine squares with sides of 75 feet (for an overall 225 x 225 ft), sheathed in a curtain wall of dark tinted glass.
Kids' Games from Nutrition Explorations Welcome to Fuel Up to Play 60 — the new home of all your favorite games and lessons from Nutrition Explorations! Here, you can still play your favorite games, AND you can learn more about Fuel Up to Play 60. Join the program and see how some of your favorite NFL players are working with the National Dairy Council to help you make your school an even healthier place! Little D's Nutrition Expedition® Games Little D's Nutrition Expedition® nutrition program is designed for lower elementary students. Though students of all ages can enjoy playing Little D the Dragon's games, they are designed to reinforce major objectives of this classroom program. Help Little D collect as many foods as he can on his way to the picnic! Arianna's Nutrition Expedition™ Games Arianna's Nutrition Expedition™ nutrition program is designed for upper elementary students. Go on a global adventure to find ingredients for combination foods! Other Nutrition Games ©2011 National Dairy Council® ©2011 NFL Properties LLC.