Some facts about the arch bridge include its architect and the age of the oldest arch bridges. In architecture, the arch bridge design has been used for over 2,000 years and can be found in Roman, Baroque and Renaissance structures.Know More
The oldest stone segmental arch bridge is the Anji Bridge, commonly known as the Zhaozhou Bridge, which is found in China. The bridge was initially constructed in 605 AD and, as of 2015, has survived over 1400 years.
The arch bridge design was also commonly used for bridges and in aqueducts during the Roman era.
An arch bridge that is constructed from stone does not require mortar in its construction. However, this means that additional support systems or scaffoldings are necessary during the construction process. Two separate segments of an arch structure do not have structural integrity on their own. The structural strength of the arch design is generated when both sections meet in the middle, allowing force to dissipate outwards.
Materials used in modern arch bridges include pre-stressed concrete and steel. The strength of modern materials allows for larger arches when compared to Roman stone arch bridges. Arches found in modern bridges can span from 200 to 800 feet.Learn more in Landforms
Coastal plains are flat, low-lying pieces of land that feature a body of water on one side and some type of landform on the other. According to National Geographic, a coastal plain can form either as a continental shelf or when water currents carry sedimentary materials that build up over time.Full Answer >
Interesting facts about the Grand Canyon are that its oldest rocks date back two billion years, it represents one-third of Earth's history and it's not the biggest canyon in the world. The Grand Canyon ranges in age from 250 million years old at the highest rocks to two billion years old at the lowest rocks.Full Answer >
The Ozark Mountains or Ozark Plateau is a rugged highland area stretching roughly from St. Louis, Mo., to the Arkansas River and occupying parts of Missouri, Arkansas, Illinois and Kansas. The tallest segment is the Boston Mountains, which stands up to 2,000 feet tall.Full Answer >
Some facts include: islands can be created by volcanic explosions, the largest island in the world is Greenland and Rhode Island is not a true island. The size of islands are constantly changing due to tides of the ocean, and it is hard to determine the smallest island in the world.Full Answer >