Memorize these and recognize 25.9% of all Engineering clues.
| # | Answer | Count | Sample Clue |
|---|---|---|---|
| 1 | the Hoover Dam | 6 | This massive project was the first in North America to contain more masonry than the Great Pyramid at Giza |
| 2 | the Army Corps of Engineers | 5 | Founded in 1802, this military group surveys roads & canals, builds lighthouses & maps navigation channels |
| 3 | an aqueduct | 4 | Containing 167 arches, one of these built in 50 A.D. is still delivering water from the Frio River to Segovia, Spain |
| 4 | the Panama Canal | 3 | The U.S. will stop operating this 50-mile-long passageway in the year 2000 |
| 5 | the Golden Gate Bridge | 3 | On opening day in 1937, the San Francisco Chronicle referred to it as a "35 million dollar steel harp" |
| 6 | concrete | 3 | Gravity, arch & buttress types of dams are usually made out of this |
| 7 | the Skywalk | 2 | This horseshoe-shaped, glass-bottomed structure extends 4,000 feet over the Colorado River in the Grand Canyon |
| 8 | the pyramids | 2 | The Egyptians constructed more than 100 of these, with the Great one taking a relatively quick 23 years to build |
| 9 | the Great Wall of China | 2 | A 1984 survey found an additional 2,500 miles to this barrier, now totaling 6,200 miles long |
| 10 | the Empire State Building | 2 | On May 1, 1931 the lights were turned on in this NYC skyscraper with the press of a button in the White House |
| 11 | the Alaska Pipeline | 2 | On August 1, 1977 the Arco Juneau became the first tanker to carry crude delivered by this 48-inch diameter system |
| 12 | Saudi Arabia | 2 | The Line, a 106-mile strip with no roads or cars is a planned city for this country ruled by Crown Prince Mohammed bin Salman |
| 13 | Pennsylvania | 2 | In 1865 the world's first oil pipeline was constructed in this state & ran a straight course of about 5 miles |
| 14 | iron | 2 | The Eiffel Tower was built using 2.5 million rivets & 14 million pounds of this material |
| 15 | Iran | 2 | One of this nation's largest development projects in the 1960s, Dez Dam used to be called Pahlavi Dam |
| 16 | France | 2 | Country which tried to build a canal across Panama before we did it |
| 17 | electrical engineering | 2 | ( Erica Joy Baker presents the clue.) Early streetlights tended to hiss & flicker until the problem was solved by Hertha Marks Ayrton, a pioneer in th... |
| 18 | an artesian well | 2 | Type of well named for the French region of Artois where 1 was 1st drilled in 1126 |
| 19 | a suspension bridge | 2 | The Design Squad used only preindustrial materials to make one of these bridges hung from vertical ropes |
| 20 | a dam | 2 | The Itaipu, one of these 5 miles wide on the Brazil-Paraguay border, inspired a Philip Glass symphony |
| 21 | the Chunnel | 2 | It runs between the towns of Folkestone & Coquelles |
| 22 | the arch | 2 | Though Romans used this support principle for aqueducts, it wasn't applied to dams until the 6th C. |
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