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A Horse's Arse

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'A Horse's Arse'
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arun's user image
27.05.2003 - 16:55
forum administrator

Does the statement, "We've always done it that way" ring any bells...?
The US standard railroad gauge (distance between the rails) is 4 feet, 8.5
inches. That is an exceedingly odd number.

Why was that gauge used?
Because that is the way they built them in England, and English
expatriates built the US Railroads.

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 is 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?
Imperial Rome built the first long distance roads in Europe (and England)
for their legions. The roads have been used ever since.

And the ruts in the roads?
Roman war chariots formed the initial ruts, which everyone else had to
match for fear of destroying their wagon wheels. Since the chariots were
made for Imperial Rome, they were alike in the matter of wheel spacing.
arun's user image
27.05.2003 - 16:56
forum administrator
The United States standard railroad gauge of 4 feet, 8.5 inches is derived
from the original specifications for an Imperial Roman war chariot.

And bureaucracies live forever. So the next time you are handed a spec and
told we have always done it that way and wonder what horse's arse came up
with that, 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.

Now the twist to the story....

When you 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. Thiokol makes the SRBs at their factory in
Utah. The engineers who designed the SRBs would 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 happens 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, as you now know, is
about as wide as two horses' behinds.

Therefore, a major Space Shuttle 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 arse.

And you thought being a horse's arse wasn't important??
deathjester's user image
06.06.2003 - 12:20
forum administrator
very, very nice
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