"The roundhouse is an amazing survivor of an important era in American engineering and architectural history. Eric DeLony, chief of the National Park Service's Historic American Engineering Record, has called it 'the most important surviving cast-iron framed building in North America.'"
From: The Baltimore and Ohio Railroad Martinsburg Shop Complex: Historic Structure Report. By John P. Hankey, August, 2000.
USA
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Image Credit:
Courtesy Flickr/Roger Wollstadt (CC BY-SA 2.0)
Image Caption:
The Baltimore & Ohio (B&O) Roundhouse, built 1851.
Era_date_from:
between 1842 and the
2001
Hardy fishermen and their families have long inhabited Bailey Island, which was settled in the 1720s. Ordinarily, they did not mind crossing to the mainland in their fishing boats. But before the Bailey Island Bridge was built, during certain seasons of the year when violent storms battered the coast, it was impossible to leave the island.
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Image Credit:
Courtesy Flickr/Swruler9284 (CC BY 2.0)
Image Caption:
A panoramic view of the length of the Bailey Island Bridge
Era_date_from:
1928
1983
The Atlas E-2 Space Booster, or launch vehicle, is a modified intercontinental ballistic missile developed by the Convair Division of General Dynamics and the U.S. Air Force. The basic concept of the Atlas system was proven in its first flight on June 11, 1957, followed over the years by the launching more than five hundred vehicles including the Pioneer, Ranger, Mariner, and Surveyor. Many payloads were sent into orbit as detachable sections of Atlas missiles.
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Image Credit:
All 3 images are Public Domain
Image Caption:
A compilation of three successful launches vehicles in action. On the left is the Atlas-Centaur, the center is the Atlas-Agena, and the right is the SM-65A Atlas missile.
Era_date_from:
1957
1985
The quantities of materials used in the building are staggering: 12,000 tons of structural steel; 42,000 cubic yards of concrete - consisting of 65,000 barrels of cement and 25,000 tons of sand; 360,000 feet of piling; and 10,000,000 bricks. At the time of its construction, Atlantic City Municipal Convention Hall was believed to be the world's largest hall, capable of seating 40,000 people. It continues to serve as a meeting place for shows, pageants, sporting events, and conventions. It is a structure of heroic proportions.
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Image Credit:
Courtesy Flickr/Paul Lowry (CC BY 2.0)
Image Caption:
The Atlantic City Convention Hall maintains its magnificence even as it approaches 90 years of age.
Era_date_from:
1926
1983
Ithamar A. Beard, an engineer of some prominence in New England, surveyed the mill brook and selected the best site for a storage dam. Contractor Simeon Cobb, knowledgeable of contemporary civil engineering practices, made major changes to the dam's original design, converting the linear dam into a gentle arch.
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Image Credit:
Courtesy Wikipedia/Ymblanter (CC BY-SA 3.0)
Image Caption:
The Ascutney Mill Arch-Gravity Dam
Era_date_from:
1834
1970
With its landscaped embankments, limited access, and depressed roadway, Arroyo Seco Parkway (now known as the Pasadena Freeway) became the prototype of the Los Angeles freeway system. Motorists enjoy a scenic drive featuring landscaped embankments lush with native chaparral. The curving alignment traverses a chain of small parks shaded by sycamores and eucalyptus and exposed views of the snow-capped San Gabriel Mountains.
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Image Credit:
Courtesy Flickr/prayitno (CC BY 2.0)
Image Caption:
Arroyo Seco Parkway (also called the Pasadena Freeway) as it is seen today by thousands of commuters
Era_date_from:
1940
1999
The Bonneville Dam, Columbia River Power and Navigation System consists of 55 major projects on Oregon's Columbia River and is said to be the largest hydroelectric system in the world.
The Columbia River forms part of the border between Washington and Oregon and flows inland through the only waterway that crosses the Cascade Mountains. To harness the energy of the ninth longest river in North America, engineers developed unique design and construction approaches to overcome problems caused by depth of water, current velocity, and an irregularly-shaped river bottom.
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Image Credit:
Courtesy Flickr/Ann Larie Valentine (CC BY-SA 2.0)
Image Caption:
The impressive power of the Bonneville Dam
Era_date_from:
1938
1987
Work began in 1887 on the high-level truss "Winner Bridge" crossing the Missouri River at Kansas City. The piers were completed in 1890, but for financial reasons the project was suspended. John Alexander Low Waddell, renowned civil engineer, prepared an alternate design for a lift bridge in 1895, which would ultimately be built as the Armour-Swift-Burlington Bridge.
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Image Credit:
Courtesy Wikipedia/Americasroof (CC BY-SA 2.5)
Image Caption:
The Armour-Swift-Burlington Bridge it its lowered position over the Missouri River
Era_date_from:
1911
1996
With a water table several feet below ground level, New Orleans faced a crisis after every heavy rainfall, not just through flooding but also through disease (yellow fever and malaria) caused by impure water. New Orleans was dependent on mechanical means for lifting water from its canals and sewage systems.
A. Baldwin Wood (1879-1956), a young assistant city engineer, designed and installed a system of large screw pumps (axial flow machines) to syphon water and accelerate drainage. By 1915 the Wood screw pump became the most advanced drainage pump in use.
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Image Credit:
Courtesy ASME
Image Caption:
This 14-foot tall Wood Screw Pump, constructed 1929, drained even more sewage/water/drainage than the 12-foot drains that preceded it
Era_date_from:
1914
1974
6225 Vectorspace Blvd Titusville State: FL Zip: 32780 Country: USA Website: http://www.asme.org/about-asme/history/landmarks/topics-a-l/air-and-space-transportation/-162-apollo-space-command-module-%281968%29, http://nssdc.gsfc.nasa.gov/planetary/lunar/apollo14info.html Creator: North American Aviation
The Apollo was the vehicle that first transported humans to the moon and safely back to earth. Nine lunar flights were made between 1968 and 1972. The command module, built by North American Aviation (at the time of launch, North American Rockwell Corporation), accommodated three astronauts during the mission. It was the only portion of the Apollo spacecraft system designed to withstand the intense heat of atmospheric re-entry at 25,000 mph and complete the mission intact. This command module at Rockwell flew as Apollo 14 in 1971.
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Image Credit:
Courtesy Flickr/Chad Nordstrom (CC BY 2.0)
Image Caption:
The real Apollo Space Command Module on display at the Kennedy Space Center's Saturn V Building.
Era_date_from:
1968
1992
