Bridges are Marvel's of Engineering that stand inconspicuously a monster
We don't think of the match even when we are passing over
Nowhere are these structures more impressive
Then when they are built over water
Which brings us to the question
Our Bridges built over water
When the water is shallow
Construction is easy
Temporary Foundation is Made in which peers are built to support the upper structure
In the Bridges then built
It's when the water is deep than other techniques are needed
There are many methods to complete such a task in deep water but here we will explore the main
Three methods of bridge building are called bad piles cofferdam
MK songs
Let's begin with bad advice
Visa pools that are driven into the soil underneath the water
Piles are hammered into the water until they turn outward or inward at an egg
This makes the piles firm and increases their ability to carry lateral vote
Tiles are inserted in the ground
Using pile driver
These are mechanical devices that may be transported to a location on a floating pile driving plant
Piledrivers may also be kept delivered out over the water from tiles that have been installed in advance
With the use of pile frame
Tile Henry's in winches
Pile drivers hammer the piles into the soil until they turn outward or inward Evan
The piles are now ready to carry lateral loads
In can provide the Foundation of support for the bridge
The next step
Is to construct the pile caps above the pi
Once this is done
The bridge is ready to be
Next up or cofferdams
Visa temporary enclosures made by driving sheet piling into the bed of a body of water to 4
Watertight fans
This is called the cop again
There is more to this bridge building technique
Once the sheet piles have been inserted in the water to create a coffin
The water is pumped out of the enclosure
Now the construction workers can build the bridge is if they are working and dried land
The process then becomes relatively easy
Final
Keysounds may be used
There are two types of cases
Open and pneumatic
An open case on is a structure that is usually shaped like a box it is open at the top end bar
The case and is usually constructed on land
Then floated into position and socks so that the upper age is above water
The case and has a cutting but emerge so that it sinks through the soft silk on the bed
Inside is a series of large pipes or dredging
Used to dress up the bed material
As more material is dredged up the case and sing
Import sections are added to the shop
To keep it above
Once the case and reaches the correct
Concrete is Laid to seal the bath
And then more concrete is poured into the case on to form a solid
A pneumatic caisson is similar to an open case
But it has an air tight bulkhead above the bottom
This is fitted with air lock
The space between the Cutting Edge in the box
Is called the working chain
In this space the water is removed using air pressure
Construction workers content into the chamber and excavate the soil
It is important of the air pressure in the chamber be carefully monitored so the workers do not get the bends
But how do engineers pick which technique to use
This all depends on the condition of the site in the technology available
These are important decisions to make that only experts can fully handle
Now that you know a bit more about how Bridges are built
You could admire them even more
After all bridge building techniques are impressive feats of Engineering