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Stones on MRT tracks.

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  • Beef_wellington
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    11 posts since Mar '08
    • 28 Mar `08, 4:26AM

      Have you guys wondered why are there plenty of stones on the MRT tracks but none on the LRT tracks ?

      And what is the purpose for having those stones...

      Edited by Beef_wellington 28 Mar `08, 4:27AM
  • ^tamago^
    我又郁闷了...
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    49,846 posts since Sep '03
  • QX179R
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    10,228 posts since Feb '08
  • Welstrong
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    8 posts since Mar '08
    • 28 Mar `08, 10:56AM

      "It acts as a base for the track, aids a resilient ride and allows drainage - and it's called 'ballast'. "

       

      ----Yahoo Answers

  • hao_hao
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    662 posts since Feb '07
  • QX179R
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    • 28 Mar `08, 8:40PM
      Originally posted by hao_hao:

      LRT tracks need stones for wat ?

      ya lor, I thought it was run on rubber wheels so why the need for stones icon_rolleyes.gif

  • wonderamazement
    i spy with my night vision eyes.
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    11,419 posts since Dec '04
  • QX179R
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    • 28 Mar `08, 10:54PM
      Originally posted by wonderamazement:

      He dunno that the stones served to lower noise levels what.

      oh..ok icon_redface.gif icon_mrgreen.gif

  • purpledragon84
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    1,865 posts since Sep '07
  • QX179R
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    • 29 Mar `08, 8:21AM
      Originally posted by purpledragon84:

      wah.. at least i learnt something today. not bad.. can entertain my gf..

      gd for ya thumbs_up.png

  • jay_rocks
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    34,689 posts since Nov '04
  • Ponders
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    4,563 posts since Oct '99
    • 29 Mar `08, 6:43PM
      Originally posted by jay_rocks:

      noise? but how?

      Rocks are piled up so they tend to have air space in between.

      Had it been something solid, sound waves travel through them..

       

  • caleb_chiang
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    7,001 posts since Jul '05
  • jay_rocks
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    34,689 posts since Nov '04
    • 29 Mar `08, 9:45PM
      Originally posted by Ponders:

      Rocks are piled up so they tend to have air space in between.

      Had it been something solid, sound waves travel through them..

       

      ar i see. sound waves would be disrupted when passing thru air and solid.

  • Ponders
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    4,563 posts since Oct '99
    • 30 Mar `08, 10:04AM
      Originally posted by jay_rocks:

      ar i see. sound waves would be disrupted when passing thru air and solid.


      your nice is Jay-rocks and you dunno its properties.... sigh. haha.

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