A Metro can be either underground or elevatedand in case of outskirts of the cities on theground even.

Metros can be :-

Heavy capacity with a capacity of 60-90,000 phpdt.

Medium capacity with a capacity of 40-50,000phpdt, or,

A light metro with the capacity ranging from 25-30,000 phpdt.

When the traffic volume exceeds 12,000 phpdtit can be handled only by a rail-based MetroSystem.

Metros can be either with pneumatic wheels orsteel wheels on steel rails. In either case thetraction is by electric energy ....etc

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Brackets for rails

Any device used to secure rails on chairs or base plates or directly to sleepers, brackets or other rail supports. The rail fastening keeps the rails fastened to the sleepers (transfer of forces), provides adequate slope of the rail foot (1:20, 1:40) in the transverse plane, prevents the rail from moving longitudinally, dampens the noise And vibrations from the rails.
General requirements for rail fasteners
Rail fasteners shall:
1. Hold the rails firmly on the rail seat.
2. limit the rotation of the rail around ....etc

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to get information about the topic jigs and fixtures full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-types-and-functions-of-jigs-and-fixtures

http://seminarsprojects.net/Thread-elements-of-jigs-and-fixtures?pid=76904&mode=threaded ....etc

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I am looking for literature on the types of jigs and fixtures and the locating and clamping device to deliver lecture to the students of mechanical engineering. Can u help me out in providing the requisite information preferably in power point. ....etc

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To get full information or details of ppt of types of jig and fixtures please have a look on the pages

http://seminarsprojects.net/Thread-elements-of-jigs-and-fixtures

http://seminarsprojects.net/Thread-types-and-functions-of-jigs-and-fixtures

http://seminarsprojects.net/Thread-elements-of-jigs-and-fixtures

if you again feel trouble on ppt of types of jig and fixtures please reply in that page and ask specific fields in ppt of types of jig and fixtures ....etc

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Elements of Jigs and Fixtures



1: Body:
The jig body is generally made of cost iron by casting process or fabricated by welding together various slabs and bars of mild steel. It may be heat treated to relief the stresses. Body is the most prominent feature of the jig. Its main purpose is to support and house the job.

The various jig body are follows:

(A):Plane Type Jig:
Plane type jig is the simplest type, it is used when plane holes are to be drilled. It has either d ....etc

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to get information about the topic functions of jigs and fixtures related topic refer the page link bellow

http://seminarsprojects.net/Thread-types-and-functions-of-jigs-and-fixtures ....etc

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to get information about the topic jigs and fixtures in drilling machine full report refer the page link bellow

http://seminarsprojects.net/Thread-elements-of-jigs-and-fixtures ....etc

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Types and Functions of Jigs and Fixtures
JIGS AND FIXTURES
Jigs and fixtures are production-workholding devices
used to manufacture duplicate parts accurately. The
correct relationship and alignment between the cutter,
or other tool, and the workpiece must be maintained.
To do this, a jig or fixture is designed and built to hold,
support, and locate every part to ensure that each is
drilled or machined within the specified limits.
Jigs and fixtures are so closely related that the
terms are sometimes confuse ....etc

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Kindly provide mumbai monorail ppt for a seminar related to civil engineering 4th year stueent. ....etc

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