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[GWL]: railroad gauge

Title: RE: railroad gauge
  Subject: Ever Wonder Why?...
The US standard railroad gauge (width between the two
rails)  is  4  feet, 8.5 inches.   That's an exceedingly odd number. Why was that gauge used?  Because that's the way they built  them in England, and the US railroads were built by English expatriates.  Why did the English build them like that?  Because the first rail lines were built by the same people who built the pre-railroad tramways, and that's the gauge they  used.  Why did "they" use that gauge then?  Because the people who built the tramways used  the same jigs and tools that they used for building wagons which used that  wheel spacing. Okay! Why did the wagons have that particular odd wheel spacing? Well, if they tried to use any other spacing, the wagon wheels would break on some of the old, long distance  roads in England, because that's the spacing of the wheel ruts. So who built those old rutted roads?  The first long distance  roads in Europe (and  England) were built by Imperial Rome for their legions.  The roads have been used ever since. And the ruts in the roads?  Roman war chariots first formed the initial ruts, which everyone else had To match for fear of destroying their wagon wheels.Since the chariots  were made for (or by) Imperial Rome, they were all alike in the matter of Wheel spacing. 
 The United States standard railroad gauge of 4 feet, 8.5  inches derives from the original  specification for an Imperial Roman war chariot. Specifications and bureaucracies live forever.  So the next time you are handed a specification and wonder what horse's ass came up with it, you may be exactly right, because the Imperial Roman war chariots were made just wide enough  to accommodate the  back ends of two war horses. Thus, we have the answer to the original question.  Now the extraterrestrial twist to the story...  When we see a Space Shuttle sitting on its launch pad, there are two 
 big booster rockets attached to the sides of the main fuel tank. These are solid rocket boosters, or SRBs. The SRBs are made by Thiokol at their factory in Utah.The engineers who designed the SRBs might have preferred to make them a bit fatter, but the SRBs had to be shipped by train from the factory to the launch site.  The railroad line from the factory had to run through a tunnel in the mountains. The SRBs had to fit through that tunnel.  The tunnel is slightly wider than  the railroad track, and the railroad track is about as wide as two horses' behinds. So, the  major design feature of what is arguably the world's most advanced transportation system was determined over two thousand years ago by the width of a horse's ass.  And you wonder why it's so hard to get ahead in this world. 
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