Write an essay on Suspension Bridge?
A suspension bridge is such bridge which is hinged with the help of ropes either made of heavy steel or tungsten containing alloys of steel. The suspension bridge does not require any support in the middle and can bear a huge load. The important features of this bridge is that it cannot get affected by earthquake and any other natural calamities .They start floating if by default any natural calamity takes place .
Suspension bridges make uses of box section roadway supported by high tensile strength cables. The cables are made of thousands of individuals steel wires bound tightly together. steel ,which is made are must have to very strong under tension , is an ideal material for cables ; a single steel wire, only 0.1 inch thick, can support over half a ton (Design Technology, n .d.).
Suspension bridges tend to very expensive to build. a suspension bridge suspends the roadways from various cables. These cables rest on the top of high towers and have to be securely anchored into the bank at either end of the bridge. These towers enable the main cables to be draped over long distance.
Most of the weight or load of the bridge is transferred by the cables to the anchorage system. These are imbedded in either solid rock and in the anchorage system, the cables are spread over the large area.
Suspension bridges in the historical times were made of rope and wood. Modern suspension bridges use a box section roadway supported by high tensile strength cables in the early nineteenth century, suspension bridges used iron chains for cables. The high tensile cables used in modern suspension bridges were introduced in the nineteenth century ( ref-design technology)
The material required for making the suspension bridge
Various suspension bridges all over the world
First of all we take a cardboard and make two dome having house on the two side (length of the domed house is 13 cm ) and kept at a distance of 85 cm ; two wide holes are made in the domed shaped house of approximate (5cm). Now take wide ( 20cm) straight road of length (85cm) of thickness (2 cm).now it is required to hinged the road with the help strings (made of steel) having length ( 25cm ) .then it is required to make holes in the road as well as in the card board. Then 2 of string are stitched on both the flat road as well as dome house.
Similarly on the opposite side of same work is done to uplift the road at a height of 10cm.
Now it is required to use the tape to bind the end of road and the contact path of domed shaped house where the hard paper road is in contact. The winding through tape should be so high that they cannot get loosen on application of high load .The winding is done on both side of attachment so that they cannot get loosen easily.it is also required to cover the paper road through plastic tape also so that the dust and other impurities can be easily removed.
It is also required pin up the domed shaped efficiently so that no loose part remains.
Hence the construction of bridge completed
Important instruction for making the suspension bridge
As per the specification provided tooth pick used should be of high tensile strength for better holding capacity .the length of the tooth pick should be small as possible
For good holding this bridge properly, the weight of the box should kept under the 3 kg because as the length increases the pressure on the box will be higher ,according to pressure law P= pgh where height is directly proportional to pressure .
(ref-bansal publication fluid mechanics) ,as per the specification(25,15) which is quite under control weight
The piece of wood that is used must be moisture proof to reduce the weight
The main forces of suspension bridge are tension in the cable and compression in the pillar. Since all the forces on the pillar are vertically downward and they are also established by main cables so it should be made of higher strength.
The weight is transferred by the cables via towers to hold the bridge which as per the requirement is 10cm above the ground
The principal of suspension used on the large scale may also appear in the contexts less dramatic of suspension than road bridges. Light cable suspension may prove less expensive and is good enough for the footbridges. The strong grinder support in such cases where a bridge spans a gap between two domes shaped building, there is need to construct specially suspension bridges.
The three types of forces acting on any bridge is a) the dead load b) the live load c) dynamic load.
Dead load refers to weight of the lift itself
Live load refers to the load due to traffic and due to climatic condition like precipitation, wind.
Dynamic load refers to environmental factor that go beyond normal condition and factors such as certain gust of dust and earth quake
Therefore
dead weight = mgh = p*vgh
= 1000*9.8*.0024
= 2.363kg
Live load =0.231kg
And dynamic load = 0.3656kg
So total load = 2.7 kg
So the sum of all loads that is live weight, dynamic weight and dead weight is approximately 3 kg which is quite effective for carrying the load.
TOTAL LOAD = WEIGHT LOAD +DYNAMICS LOAD+DEAD WEIGHT LOAD
= 2.363kg+0.231kg+0.3565kg
=2.7kg
Calculation based on the forces acting on the bridge support
Different forces acting on the bridges are
Compressive Forces- such forces acts to compress the part which is in contact
Ex- in suspension bridge string connecting to the dome house apply tensile force on the domed house while domed house apply compressive forces on the string
Tensile Forces- such forces act to counter the compression is called tensile forces.
Ex-in suspension bridge, string is used to carry the tensile forces.
Total Forces= tensile forces + compression forces.
Conclusion
Thus the report of suspension bridge is completed.
References
Design Technology. Suspension Bridges – Design Technology, Viewed on 26 May 2015, https://www.design-technology.org/suspensionbridges.htm
K. Bansal; fluid mechanics viewed on 26 may,
https://roy1almechanicalbuzz.blogspot.in/2014/11/textbook-of-fluid-mechanics-by-r-k.html
Essay Writing Service Features
Our Experience
No matter how complex your assignment is, we can find the right professional for your specific task. Contact Essay is an essay writing company that hires only the smartest minds to help you with your projects. Our expertise allows us to provide students with high-quality academic writing, editing & proofreading services.
Free Features
Free revision policy
$10Free bibliography & reference
$8Free title page
$8Free formatting
$8How Our Essay Writing Service Works
First, you will need to complete an order form. It's not difficult but, in case there is anything you find not to be clear, you may always call us so that we can guide you through it. On the order form, you will need to include some basic information concerning your order: subject, topic, number of pages, etc. We also encourage our clients to upload any relevant information or sources that will help.
Complete the order form
Once we have all the information and instructions that we need, we select the most suitable writer for your assignment. While everything seems to be clear, the writer, who has complete knowledge of the subject, may need clarification from you. It is at that point that you would receive a call or email from us.
Writer’s assignment
As soon as the writer has finished, it will be delivered both to the website and to your email address so that you will not miss it. If your deadline is close at hand, we will place a call to you to make sure that you receive the paper on time.
Completing the order and download