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about 1 thousand years

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7 years how many human years?

In general, for every 1 year a dog or cat ages, humans age about 7 years. This is used to estimate the biological aging rate between humans and pets.


What was used before bridges?

Bridges


How many bridges are on the Hudson River?

There are 44 bridges that are now in use on the Hudson River. About 10 of these bridges are used for railroad crossings and 34 are automobile bridges. There are also 5 tunnels that traverse roadways under the Hudson River.


What type of architecture is used to construct many bridges?

steel cable suspension


Where are some bridges used why?

some bridges are used to get to the other side of something


What type of designs are used to build bridges?

The designs that are used to build bridges are designs that can keep them stable , working and that won't be dangerous also designs that amaze people.


Wheatston bring is used to measure?

There are many variations of the basic Wheatstone bridge circuit. Most DC bridges are used to measure resistance, while bridges powered by alternating current.


Why is the triangle shape used in many bridges?

Because the shape triangle is very strong that's why they are used!


What are the most common types of straight bridges used in civil engineering projects?

The most common types of straight bridges used in civil engineering projects are beam bridges, truss bridges, and arch bridges.


What are some beam bridges?

Most highway bridges and railroad bridges are simple beam bridges. In this type of construction, the road surface or deck is supported by a series of longitudinal beams made of concrete, steel or timber. These in turn rest on bearings, which reston piers or abutments.


What land bridges did the Paleolithic use?

During the Paleolithic era, humans used land bridges such as the Bering Land Bridge, which connected Asia to North America, allowing early humans to migrate into the Americas. Another significant land bridge was the land connection between Europe and Asia, which facilitated movement across the continents. These land bridges played a crucial role in the dispersal of human populations and the spread of cultures and technologies.


Why do many bridges look not look the same?

Some materials must be used in a specific area, and the battle to make the sturdiest bridges at the lowest cost rages on.