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Blog Entry# 826690
Posted: Aug 13 2013 (12:19)

19 Responses
Last Response: Aug 14 2013 (07:31)
General Travel
21454 views
8

Aug 13 2013 (12:19)   CNPA/Channarayapatna (3 PFs)
 
~   23691 blog posts
Entry# 826690            Tags  
in school days we used to have a question on thermal expansion...why is there gap between two rail tracks? the answer would be to allow expansion of tracks during summers and prevent tracks from bending...
thanks to terrorist activities and fish plate removals, now railtracks are long welded. kilometres of tracks without fishplates and junctions. has the heat stopped increasing the length of tracks or has the coefficient of thermal expansion for iron decreased?
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Aug 13 2013 (23:58)
ashii~
ashii~   2068 blog posts
Re# 826690-16              
also
Wooden sleepers are used on bridges and turnouts because they are very easily cut and sized on site to fit the peculiarities of the particular stretch of track. Wooden sleepers were also preferred for bridges because they are lighter compared to the concrete sleepers, and provide additional damping for vibrations. A small number of wooden sleepers are procured for these reasons while the manufacture of steel channel sleepers and their special damping pads lags
Source : IRFCA click here
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Aug 14 2013 (00:05)
guest   9508 blog posts
Re# 826690-17              
Excuse Me If U can Visit #Firozpur Cantt station u will see only Wooden sleepers no Concrete or Steel or iron Sleepers are used. ON PF No1 Wooden Sllepers are with Greenery plants are there and nobody cuts it on PF no 2 Wooden Sleepers are totally disapaered under Ground only Railtracks and Rats Holes are Visible. On Pf no 3,4 &5 all are dissapeared only Garbage is Found on the tracks nobody cares to clean it
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Aug 14 2013 (01:14)
railfan.z^~
railfan.z^~   13777 blog posts
Re# 826690-18              
The conventional gaps are, at some places, replaced by diagonally cut junctions. This allows lateral expansion of larger lengths of the track thereby minimizing their number to a few in many kilometers. Logically here you do not need to set the gap to a fixed distance. It adjusts as per need. This MAY be a possible explanation to this. The image attached was taken by me at NDLS where its not tough to find such junctions.
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Aug 14 2013 (07:31)
~   23691 blog posts
Re# 826690-20               Past Edits
well the filthy background in itself screams aloud that its none other than new delhi station :)
thanks for the pic zahaib. even i hv seen few similar intersections here, byut its nt a regular sight. but nice design to ensure safety as well as allow expansion of tracks...
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