Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Ballast:
Ballast is the layer of broken stone provided on the formation on which the sleepers rest. The stones are cubical in shape and pass through 50 mm square mesh. The functions of the ballast are:
(a) To distribute the load of traffic to the earthen formation to a safe value.
(b) To act as an elastic bed to absorb the impact of the wheels.
(c) To hold the sleepers firmly in the lateral and longitudinal directions.
(d) To act as a good drainage medium.
(e) To provide a convenient medium to pack the track to the desired levels.
(f) To prevent capillary rise of water which may cause decay/corrosion of sleepers?
(g) To check the growth of vegetation under the track.
The thickness of ballast for a high density BG track is 300 mm, and it is 250 mm for a low density BG track. Figure 4 gives the standard ballast section.
Figure: Standard BG Track Ballast Section
Q. Define Maximum Allowable Working Pressure? The MAWP to be marked on the Section VIII nameplate is defined as the maximum gauge pressure permissible at the top of a completed
define elastomer.explain in details?
Aeronautical engineering is a branch of aerospace engineering, thus some people use the 2 terms interchangeably. It is also sometimes considered that aeronautical engineering cover
Point and Path Function - Thermodynamics: Poin t Function A point function is single valued function which always possesses a single - value is all states. For instance
Blasting Abrasive: Sand had been use widely before new abrasive media invented. Today, manufacturer had more choices and better options in choosing blasting media for their ow
One can increase the toughness of a ceramic material by introducing fibers to the structure of the ceramic and create a ceramic-matrix composite. However, unlike other fiber-reinfo
A simple Rankine cycle works between pressures 28 bar and 0.06 bar, the initial condition of steam being dry saturated. Determine the cycle efficiency, work ratio and specific st
What is a couple
Explain Extension of screw conveyor by hydraulic cylinder "Extension of screw conveyor with the help of linkage arrangement by hydraulic cylinder and hinged joint" Procedur
State the Planning the foundation for reciprocating engines i) The eccentricity of the common centre of gravity of machine and foundation referred to the centroid of base are
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd