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Why are railroad tracks built with a flexible expansion and contraction joint?
Wiki User
∙ 12y ago
The tracks have a larger coefficient of linear expansion than the ground beneath.
Wiki User
∙ 12y ago
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Where i use the expansion joint?
Expansion joints are used in various types of structures and systems to accommodate the movement caused by thermal expansion, contraction, vibrations, settlement, or other dynamic forces. They are designed to prevent damage to the structure by allowing controlled movement while maintaining the structural integrity. Here are some common applications where expansion joints are used: **Buildings and Structures**: **Buildings**: Expansion joints are used in buildings to accommodate the movement caused by temperature changes and structural settling. They are often found in floors, walls, ceilings, and facades. **Bridges**: Expansion joints are critical in bridges to allow for the movement of the bridge components due to temperature fluctuations, traffic loads, and seismic activity. **Roads and Highways**: Expansion joints are used in roadways and highways to prevent cracking and damage due to thermal expansion and contraction. They also accommodate the movement caused by heavy traffic loads. **Piping Systems**: **Industrial Pipelines**: Expansion joints are installed in piping systems to absorb thermal expansion and contraction of pipes caused by temperature changes in the fluid being transported. **HVAC Systems**: In heating, ventilation, and air conditioning systems, expansion joints help compensate for the expansion and contraction of ductwork due to temperature changes. **Railways and Transit Systems**: **Railway Tracks**: Expansion joints are used in railway tracks to allow the rails to expand and contract with temperature changes. This helps prevent buckling and warping of the tracks. **Subway and Light Rail Systems**: Expansion joints are used in tunnels and station structures to accommodate the movement caused by ground settlement and vibrations. **Water and Wastewater Systems**: **Water Treatment Plants**: Expansion joints are used in water and wastewater treatment facilities to handle the movement of pipes and structures due to changes in water pressure, temperature, and ground settlement. **Aerospace and Transportation**: **Aircraft**: Expansion joints are used in aircraft components to accommodate the movement caused by changes in air pressure and temperature during flight. **Automobiles**: Expansion joints are found in exhaust systems and other components to absorb vibrations and thermal expansion. **Industrial Facilities**: **Manufacturing Plants**: Expansion joints are used in industrial facilities to allow for the movement of equipment, machinery, and structures due to temperature changes and vibrations. **Power Plants**: Expansion joints are used in power plants to handle the movement of pipes, boilers, and other components caused by temperature changes and pressure differentials. **Marine Structures**: **Harbors and Ports**: Expansion joints are used in dock structures and seawalls to accommodate tidal fluctuations and other dynamic forces. **Shipbuilding**: Expansion joints are used in shipbuilding to accommodate movement in the hull and other components. These are just a few examples of the many applications of expansion joints. The specific type of expansion joint used will depend on the requirements of the structure or system, the type of movement expected, and other factors. Proper design, installation, and maintenance of expansion joints are essential to ensure the longevity and functionality of the structure or system.
How railway track capacity can be enhanced?
There are numerous ways to enhance track capacity. The simplest being to run longer train consists. Next, more tracks could be built within the existing Right of Way. Alternative, curves and elevation chances can be flattened out to provide higher operating speeds.
What are infrastructures of development project?
Foundation projects allude to huge scope development drives pointed toward building, growing, or updating fundamental public administrations and offices. These might be utilities like water treatment plants and power grids, as well as transportation systems like roads, bridges, and airports. Governments typically fund and oversee infrastructure projects, which frequently involve partnerships with investors and private businesses. The economic expansion of a region and the general standard of living of its inhabitants can both be significantly impacted by the success of infrastructure projects.
Define soil stabilization for building foundations?
This is a step most builders and doityourselfers do not spend enough time on. Let's say your lot is wooded. After the trees are removed the soil is broken up and raked for as much as 2' or more. Some stumps can go as much as 6' into the ground. This ground needs to be compacted before you put a foundation on it. Or, it will compact after, causing unwanted settling of your foundation. Don't let the dozzer driver tell you he compacted with the dozzer the reason dozzers can travel on mud where you cannot walk is because the tracks dissipate the weight out over a larger surface. The ground needs to be compacted in layers. Wet ground will not compact... people pour slabs on mud all the time. A drying agent must be added or it will have to be dryed over time. Some soil which has a high plasticity index (PI) will need to be excavated and good select fill brought in and compacted. Another option for this problem would be to have drilled bell bottom piers incorporated into your foundation design. Bottom line is your foundation needs to be designed by an engineer and those instructions followed by a builder who does not cut corners... Good luck with that one!
What is over excavation?
Over excavation refers to the process of excavating or digging a site beyond the specified or required depth or dimensions outlined in the construction plans or engineering design. This situation can occur intentionally or unintentionally and has implications for the construction project. Here are some key points: **Intentional Over Excavation:** In some cases, engineers or construction professionals may intentionally over excavate to address certain site conditions or to achieve specific design requirements. This might be done to remove unsuitable soil or to create a level and stable foundation. **Unintentional Over Excavation:** Unintentional over excavation can happen due to errors in surveying, miscommunication, or misinterpretation of project specifications. It may lead to additional costs and time delays in the construction process. **Reasons for Over Excavation:** Addressing poor soil conditions: If the soil at the construction site is unsuitable or lacks the required bearing capacity, over excavation may be necessary to reach more stable soil layers. Creating a level base: Achieving a level and uniform foundation is crucial for the stability and structural integrity of buildings. Over excavation may be necessary to establish the desired foundation depth and slope. **Implications:** **Costs:** Over excavation can result in additional costs for labor, equipment, and disposal of excess soil. **Time Delays:** The need to rectify unintentional over excavation can lead to delays in the construction schedule. **Environmental Impact:** Disposing of excess excavated material may have environmental considerations, and proper disposal methods need to be followed. **Prevention and Mitigation:** **Accurate Surveys and Plans:** Careful surveying and accurate construction plans can help prevent unintentional over excavation. **Clear Communication:** Effective communication among project stakeholders, including engineers, surveyors, and contractors, is essential to avoid misunderstandings. **Adherence to Specifications:** Ensuring that excavation activities adhere to project specifications and engineering design can help mitigate the risk of over excavation. In construction projects, it is crucial to strike a balance between achieving the necessary excavation for a stable foundation and avoiding unnecessary or unplanned over excavation to control costs and adhere to project timelines.
Why are bolts on railroad tracks in oval holes?
To help with the contraction and expansion of the rail roads
Why do railway tracks sound louder in winter than in summer is it expansion or contraction?
Contraction is the reason that railway tracks sound louder in winter.
What is an example of a difficulty causes by thermal expansion?
buckled railroad tracks on a hot day
What would happen on a hot day if railway tracks were just one massive plank of wood?
The expansion of the steel rails on a hot day would split and tear up the continuous strip of wood. Individual railroad ties can shift a bit as necessary to adjust ot the expansion and contraction of the rails.
How did the government aid the expansion of the railroad industry during the mid and late 19th century?
By providing land grants for building tracks.
How did the government aid the expansion of the railroad industry during the mid- and late 19th century?
By providing land grants for building tracks.
Is there railroad tracks in south America?
There are a lot of railroad tracks in South America.
How many miles of railroad tracks are in Egypt?
There are 7,021 miles of railroad tracks currently in Egypt
A framework built to carry railroad tracks what does a framework built to carry railroad tracks?
Trestles
What is the tracks for train called?
train tracks or a railroad
Why do train tracks buckle?
It's usually the result of expansion and contraction due to temperature changes, but this should be allowed for by suitable expansion joints. The rails may also buckle if the formation on which the track lies, subsides.
How many miles of railroad tracks in US by 1840?
There was almost 3,00 miles of railroad tracks in 1840.
