Path: utzoo!attcan!uunet!wucs1!wucs2!jps
From: jps@wucs2.UUCP (James Sterbenz)
Newsgroups: sci.electronics
Subject: Re: WHat are those holes for?
Message-ID: <892@wucs2.UUCP>
Date: 20 Jul 88 14:28:13 GMT
References: <10790@oberon.USC.EDU> <327@richp1.UUCP> <303@btree.uucp> <1550@tekirl.TEK.COM>
Reply-To: jps@wucs2.UUCP (James Sterbenz)
Organization: Washington U. in St. Louis
Lines: 16

In article <1550@tekirl.TEK.COM> jackg@tekirl.TEK.COM (Jack Gjovaag) writes:
>In article <303@btree.uucp> rfarris@btree.UCSD.EDU (rick farris) writes:
>>Yes, and why the heck are manholes round?
>Round is the only shape for the cover that guarantees that the cover can't
>fall into the hole.  What do I win?

Nothing.  I suspect that any regular polygon with an ODD number of sides
couldn't fall into the hole.  Think about trying to rotate a triangle or
pentagon to fit!  A circular cover is just easier to manufacture
(kinda like a polygon with an infinite number of sides :-).

-- 
James Sterbenz  Computer and Communications Research Center
                Washington University in St. Louis 314-726-4203
INTERNET:       jps@wucs1.wustl.edu
UUCP:           wucs1!jps@uunet.uu.net