Tunnels and laying of track, Mechanical Engineering

Assignment Help:

Tunnels:

Tunnels become unavoidable for negotiating hills, where detours are costly. The tunnels in rock are not lined, but those in loose strata require a lining of cement concrete. Drainage of water should be taken care of. Railway tunnels do not need to be lighted whereas road tunnels are invariably lighted.

Laying of Track

Laying of a railway track is also known as plate laying. It is the normal practice to lay the sleepers initially directly on the embankment and fix the rails to the sleepers, without placing the ballast. This is done so that the track can settle in the initial stages when the embankment is still in a loose state. Ballast is packed subsequently. The track already laid is used for transporting fresh track material on wagons.


Related Discussions:- Tunnels and laying of track

Determine the actual absolute velocity, Question: As shown in the figur...

Question: As shown in the figure, the jet transport B is flying north with a velocity v B = 600 km/h when a smaller aircraft A passes underneath the transport headed in the 60

Thermodynamics, why there is heat is not completely converted into work in ...

why there is heat is not completely converted into work in ideal case?

Derive heat transfer and work transfer expression, Derive heat transfer and...

Derive heat transfer and work transfer expression in an non-flow or closed isothermal and polytropic procedure?

Explain the methods of solid modeling, Explain the Methods of solid modelin...

Explain the Methods of solid modeling The various methods for representing the solids are : (i)  Half-space method (ii)  Boundary representation method (b-rep) (iii)

The diameter dimension command, The Diameter Dimension Command You can ...

The Diameter Dimension Command You can use the Diameter command to annotate a circle or an arc with a diameter dimension. To achieve this simply start the command, pick a point

What is hot extrusion, Q. What is Hot extrusion? Hot extrusion is a hot...

Q. What is Hot extrusion? Hot extrusion is a hot working process, which means it is done above the material's recrystallization temperature to keep the material from work harde

Basic s.i. units and its derived unit - mechanics, Basic S.I. Units and its...

Basic S.I. Units and its derived unit: S.I. stands for "System International Units". There are three quantities in the Standard International Systems as concerned to Mechanics

Management of financial requirements , Management of Financial Requirements...

Management of Financial Requirements:  To start an own workshop or any business you need monetary support. You need to ensure availability of the required money including working

Determine the dead load - sewer construction, Determine the dead load: ...

Determine the dead load: A 250 mm diameter sewer is placed in a 2.75 m deep rectangular trench that is 0.65 m wide. This trench is backfilled with saturated clay having a unit

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd