Re: WHat are those holes for?

Article View: sci.electronics

Article #19472

#19472

From: Kevin G. Heppell
Date: Wed, 20 Jul 1988 17:26

22 lines
1798 bytes

In article <4862@killer.DALLAS.TX.US> ltf@killer.DALLAS.TX.US (Lance Franklin) writes:
>                    ...a equilateral triangle for a manhole cover wouldn't
>fall into the hole either.
>-- 
>+------------------+ +------------------------------------------------------+
>| Lance T Franklin | |  Now accepting suggestions for clever, humourous or  |
>|    ltf@killer    | |  incredibly insightful .signature quote.  Send Now!  |
>+------------------+ +------------------------------------------------------+

  I don't know about you, but I _can_ get a triangular cover down the hole.
  Think about it: a line which divides the cover into two right triangles
  is only sqrt(3)/2 as long as a side - just hold one edge vertical and 
  drop the cover along one side of the hole.

  Round covers also have the advantage of minimizing stress concentration
  (i.e. they distribute loads well) when something drives over.

-------------------------------------------------------------------------------
    Kevin G. Heppell                            784 Santa Barbara Rd.
    USENET: ucbvax!cory!heppell                 Berkeley, CA  94707-2046
    arpa:   heppell@cory.Berkeley.EDU           (415) 528-6396

Technical Details

Message-ID: <4566@pasteur.Berkeley.Edu>

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!cory.Berkeley.EDU!heppell

References: <10790@oberon.USC.EDU> <327@richp1.UUCP> <303@btree.uucp> <1550@tekirl.TEK.COM> <4862@killer.DALLAS.TX.US>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!cory.Berkeley.EDU!heppell
From: heppell@cory.Berkeley.EDU (Kevin G. Heppell)
Newsgroups: sci.electronics
Subject: Re: WHat are those holes for?
Message-ID: <4566@pasteur.Berkeley.Edu>
Date: 20 Jul 88 17:26:54 GMT
References: <10790@oberon.USC.EDU> <327@richp1.UUCP> <303@btree.uucp> <1550@tekirl.TEK.COM> <4862@killer.DALLAS.TX.US>
Sender: news@pasteur.Berkeley.Edu
Reply-To: heppell@cory.Berkeley.EDU.UUCP (Kevin G. Heppell)
Organization: University of California, Berkeley
Lines: 21

Reply to Parent Message