From: stephen@sprunk.org   
      
   On 11-Apr-15 15:19, Adam H. Kerman wrote:   
   > Stephen Sprunk  wrote:   
   >> On 11-Apr-15 14:28, Adam H. Kerman wrote:   
   >>> We don't close freight railroads for weekends.   
   >>   
   >> Neither do we; that'd be silly.   
   >>   
   >> It was just the stations that were closed, to give the crews   
   >> longer periods for heavy work on the platforms.  Trains still ran   
   >> through every few minutes, and there were shuttle buses to/from the   
   >> next stations in both directions so folks could still get where   
   >> they needed to go.   
   >   
   > They didn't rebuild platforms as passengers were standing on them.   
      
   Thank you, Captain Obvious.   
      
   > They replaced half of one side at a time; took an absurdly long   
   > time.   
      
   But ... why?   
      
   DART used a week of nights to prepare, then a weekend to demolish the   
   old platform and build a temporary wooden one, then a week of nights for   
   more prep work, then a weekend to remove the wooden platform and build a   
   new concrete and tile/brick one, and then a week of nights to clean up.   
    Then the gang moved on to the next station and repeated the process; it   
   took most of a year in total, but each station went _very_ quickly.   
      
   S   
      
   --   
   Stephen Sprunk         "God does not play dice."  --Albert Einstein   
   CCIE #3723         "God is an inveterate gambler, and He throws the   
   K5SSS        dice at every possible opportunity." --Stephen Hawking   
      
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