Why are manhole covers round?

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  • John3
    Confirmed User
    • May 2003
    • 1214

    #1

    Why are manhole covers round?

    Please discuss.

    Hook 'em.
  • Dildozer
    Confirmed User
    • Jul 2002
    • 7519

    #2
    so the manhole cover doesn't fall in the manhole

    if it was squared or rectangle it could fall down there, imagine the shit people could do.
    Spam link here

    Comment

    • NetRodent
      Confirmed User
      • Jan 2002
      • 3985

      #3
      Um... Because manholes are round?
      "Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats."
      --H.L. Mencken

      Comment

      • John3
        Confirmed User
        • May 2003
        • 1214

        #4
        Originally posted by Dildozer
        so the manhole cover doesn't fall in the manhole

        if it was squared or rectangle it could fall down there, imagine the shit people could do.
        wrong.
        try again.

        Hook 'em.

        Comment

        • John3
          Confirmed User
          • May 2003
          • 1214

          #5
          Originally posted by NetRodent
          Um... Because manholes are round?
          you're too smart to play this game

          Hook 'em.

          Comment

          • The Truth Hurts
            Zph7YXfjMhg
            • Nov 2002
            • 15770

            #6
            1. So they won't fall through the hole
            2. So they will roll

            Comment

            • John3
              Confirmed User
              • May 2003
              • 1214

              #7
              Originally posted by The Truth Hurts
              1. So they won't fall through the hole
              2. So they will roll
              1. is incorrect.
              2. is one good reason . . .

              Hook 'em.

              Comment

              • The Truth Hurts
                Zph7YXfjMhg
                • Nov 2002
                • 15770

                #8
                Manholes, which interconnect underground sewerage pipes, and serve as a point of entry for cleaning the pipes, are located at every major sewer pipe junction, and are capped with round manhole covers. The reason for the circular construction of these covers is, quite simply, that covers of any other shape would fall through the manholes by virtue of their varying diameters. Circular manhole covers do not vary in width, or in diameter, as is the case with these other shapes, thus remaining in place despite the street traffic running roughshod over them.

                Manufacturers craft the manhole covers together with the smaller sized lip, upon which they rest, at the same time to ensure a tightly sealed fit. Additionally, the manufacture of circular manhole covers is easier and more accurate than the manufacture of covers of any other shape. Lastly, round manhole covers, once removed, require less lifting and less manpower, as their shape allows them to be rolled.

                Comment

                • The Truth Hurts
                  Zph7YXfjMhg
                  • Nov 2002
                  • 15770

                  #9
                  also, Round covers can cover holes no matter how they are oriented vis-à-vis the hole.

                  Comment

                  • nofx
                    Too lazy to set a custom title
                    • Nov 2002
                    • 16826

                    #10
                    http://www.google.com/search?hl=en&i...=Google+Search

                    http://web.ask.com/web?q=Why+are+man...%3F&o=0&qsrc=0

                    Why think, when you have the internet?
                    http://www.nikora.com/puzzles/WhyAre...oversRound.htm

                    Often times I wonder why
                    There's love and hate, theres live or die.
                    When sickness comes I must decide:
                    When feelings go, theres suicide.

                    Comment

                    • Tala
                      Fucked if I know
                      • Dec 2002
                      • 23368

                      #11
                      So they don't fall in!

                      Manholes, which interconnect underground sewerage pipes, and serve as a point of entry for cleaning the pipes, are located at every major sewer pipe junction, and are capped with round manhole covers. The reason for the circular construction of these covers is, quite simply, that covers of any other shape would fall through the manholes by virtue of their varying diameters. Circular manhole covers do not vary in width, or in diameter, as is the case with these other shapes, thus remaining in place despite the street traffic running roughshod over them.

                      Manufacturers craft the manhole covers together with the smaller sized lip, upon which they rest, at the same time to ensure a tightly sealed fit. Additionally, the manufacture of circular manhole covers is easier and more accurate than the manufacture of covers of any other shape. Lastly, round manhole covers, once removed, require less lifting and less manpower, as their shape allows them to be rolled.

                      EDIT: See, you got your answer form the same place I did, yet you told Dildozer that he was incorrect. I vote that he should be given the opportunity to beat you to a bloody pulp for it.

                      So Dildozer was essentially correct.

                      Now for the more important question: Who really gives a fuck?

                      Discuss.

                      ICQ: 11120676 | Google: mindcrime | Skype: suitemindcrime|E-Mail: mindcrime AT gmail.com|PR girl with great writing skills for hire!!!! Contact me to work for YOU!|TECHIEMEDIA? 24/7 support from some of the best techs in the biz. Tell Jim that I sent you.

                      Comment

                      • The Truth Hurts
                        Zph7YXfjMhg
                        • Nov 2002
                        • 15770

                        #12
                        Pay attention, I already copied and pasted that ; )

                        Comment

                        • Tala
                          Fucked if I know
                          • Dec 2002
                          • 23368

                          #13
                          Originally posted by The Truth Hurts
                          Pay attention, I already copied and pasted that ; )
                          Pay attention. I already went back and edited it.

                          ICQ: 11120676 | Google: mindcrime | Skype: suitemindcrime|E-Mail: mindcrime AT gmail.com|PR girl with great writing skills for hire!!!! Contact me to work for YOU!|TECHIEMEDIA? 24/7 support from some of the best techs in the biz. Tell Jim that I sent you.

                          Comment

                          • AdultNex
                            Confirmed User
                            • Feb 2003
                            • 8985

                            #14
                            Originally posted by Tala

                            Now for the more important question: Who really gives a fuck?

                            Discuss.
                            http://www.google.com/search?sourcei...s+a+fuck%3F%22

                            Couldn't find it.

                            Comment

                            • Probono
                              Confirmed User
                              • Oct 2002
                              • 2731

                              #15
                              I would have bet so the rather round laborers who need to go through them fit!

                              Comment

                              • John3
                                Confirmed User
                                • May 2003
                                • 1214

                                #16
                                The reason for the circular construction of these covers is, quite simply, that covers of any other shape would fall through the manholes by virtue of their varying diameters.
                                -----______------


                                ---- = ground level


                                I got into this discussion about 2 weeks ago with an engineer. He was taught the same thing I quoted above about 20 years ago in school.

                                It's wrong.

                                Hook 'em.

                                Comment

                                • Buff
                                  GFY Assassin
                                  • May 2003
                                  • 2993

                                  #17
                                  So they can double as frisbees.

                                  Comment

                                  • Tala
                                    Fucked if I know
                                    • Dec 2002
                                    • 23368

                                    #18
                                    My bad, Truth. It seems that John was the idiot who told dildozer that he was incorrect, not you. My bad, I apologize.

                                    ICQ: 11120676 | Google: mindcrime | Skype: suitemindcrime|E-Mail: mindcrime AT gmail.com|PR girl with great writing skills for hire!!!! Contact me to work for YOU!|TECHIEMEDIA? 24/7 support from some of the best techs in the biz. Tell Jim that I sent you.

                                    Comment

                                    • John3
                                      Confirmed User
                                      • May 2003
                                      • 1214

                                      #19
                                      Originally posted by Probono
                                      I would have bet so the rather round laborers who need to go through them fit!
                                      that's a much better answer than the common one!

                                      Hook 'em.

                                      Comment

                                      • John3
                                        Confirmed User
                                        • May 2003
                                        • 1214

                                        #20
                                        Originally posted by Tala
                                        My bad, Truth. It seems that John was the idiot who told dildozer that he was incorrect, not you. My bad, I apologize.
                                        hahahahaha

                                        you might want to look into this a little bit . . . before you start calling people names

                                        Hook 'em.

                                        Comment

                                        • John3
                                          Confirmed User
                                          • May 2003
                                          • 1214

                                          #21
                                          Let me re-phrase . . .

                                          It is not correct to say that manhole covers are round because "it won't fall in the manhole".

                                          carry on . . .

                                          Hook 'em.

                                          Comment

                                          • Helix
                                            Confirmed User
                                            • Feb 2002
                                            • 6021

                                            #22
                                            as long as the manhole cover diameter is greater than the man hole, it is impossible for the cover to fall thru the manhole.

                                            Comment

                                            • stocktrader23
                                              Let's do some business.
                                              • Jan 2003
                                              • 18781

                                              #23
                                              Because the manhole is round silly.


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                                              Comment

                                              • lagwagon
                                                Confirmed User
                                                • Jul 2001
                                                • 8464

                                                #24
                                                Originally posted by Tala


                                                Now for the more important question: Who really gives a fuck?



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                                                Comment

                                                • Tipsy
                                                  Confirmed User
                                                  • Jul 2001
                                                  • 6989

                                                  #25
                                                  Originally posted by Buff
                                                  So they can double as frisbees.
                                                  Closest yet. It's so the teenage mutant ninja turtles have a ready supply of spare weapons. I thought everyone knew that!
                                                  Ignorance is never bliss.

                                                  Comment

                                                  • John3
                                                    Confirmed User
                                                    • May 2003
                                                    • 1214

                                                    #26
                                                    Originally posted by Helix
                                                    as long as the manhole cover diameter is greater than the man hole, it is impossible for the cover to fall thru the manhole.

                                                    Hook 'em.

                                                    Comment

                                                    • Mr. Jim
                                                      Confirmed User
                                                      • Mar 2003
                                                      • 4372

                                                      #27
                                                      Is this prison lingo talk????

                                                      Comment

                                                      • KingK7
                                                        Confirmed User
                                                        • Jun 2002
                                                        • 6372

                                                        #28
                                                        Originally posted by jimholio
                                                        Is this prison lingo talk????

                                                        Comment

                                                        • John3
                                                          Confirmed User
                                                          • May 2003
                                                          • 1214

                                                          #29
                                                          So why are pipes round?

                                                          Hook 'em.

                                                          Comment

                                                          • gothweb
                                                            Confirmed User
                                                            • Jun 2002
                                                            • 8849

                                                            #30
                                                            There is a sublime simplicity to anything round. I assume that for a variety of reasons, pipes, manholes, etc. are round due to this simplicity.

                                                            More specifically, I like the following reasons...

                                                            1.) It can't fall in because the diameter is the same everywhere.

                                                            2.) It is easy to replace a manhole cover, because you don't have to rotate the heavy cover, it fits at any orientation.

                                                            3.) Moving heavy things is easier if they can be rolled.

                                                            More cynically, I suspect they are round because someone made them round once, and then it was easier to keep doing it the same way. That's how most standards arise.

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                                                            Comment

                                                            • John3
                                                              Confirmed User
                                                              • May 2003
                                                              • 1214

                                                              #31
                                                              Originally posted by gothweb
                                                              More cynically, I suspect they are round because someone made them round once, and then it was easier to keep doing it the same way. That's how most standards arise.
                                                              Standardization.
                                                              You and I think alike.

                                                              Hook 'em.

                                                              Comment

                                                              • Scootermuze
                                                                Confirmed User
                                                                • Dec 2001
                                                                • 4513

                                                                #32
                                                                Originally posted by John3
                                                                So why are pipes round?
                                                                for strength.. Just as with an arched top, as opposed to a flat top..

                                                                Comment

                                                                • Krimsin
                                                                  Registered User
                                                                  • Jan 2003
                                                                  • 133

                                                                  #33
                                                                  Originally posted by John3
                                                                  Please discuss.
                                                                  They asked my friend that at Microsoft during his day-long interview... interesting.

                                                                  Comment

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