Replies

1. 
   Svenny | Sep 21, 2008 05:23am | #1

   3.8 inches?

   John Svenson, builder,  remodeler,  NE Ohio

2. 
   Svenny | Sep 21, 2008 05:25am | #2

   Wait....maybe that would be 1.9 inches. Had to convert diameter to radius.

   John Svenson, builder,  remodeler,  NE Ohio

3. 
   RedfordHenry | Sep 21, 2008 05:45am | #3

   I get 1 foot, but I rounded, and made a few assumptions.

4. 
   jonblakemore | Sep 21, 2008 05:46am | #4

   I would make the saddles 1-29/32" tall.

   I would do the same if you were asking about hose clamp around a piece of 3/4" pipe.

    

   Jon Blakemore

   RappahannockINC.com Fredericksburg, VA

1. 
   brownbagg | Sep 21, 2008 05:51am | #6

   you are assuming that the world is completely round at the same elevations. so since its not you are 17 feet 3 inch and 3/8 too short

2. 
   Svenny | Sep 21, 2008 05:52am | #7

   Looks like we agree.John Svenson, builder,  remodeler,  NE Ohio

1. 
   StanFoster | Sep 21, 2008 06:34am | #8

   Svenny:   You are correct.   It doesnt matter if you have clamp around a pipe as was mentioned...a basketball..earth...or the Milky Way galaxy.  Adding one foot to any of these circumferences will all raise it a tad over 1.9 inches.   One foot divided by Pi...divided by 2 is the answer.

    

    

1. 
   geoffhazel | Sep 21, 2008 08:14am | #9

   Wouldn't it float above the earth all the way around? Or at least, couldn't it? Heck , we might not even need the little shims.

1. 
   StanFoster | Sep 21, 2008 02:08pm | #10

   geoff....well of course this isnt practical at all...the earth isnt a perfect smooth curve...but if it were...then this band would need little saddles spaced to keep the separation even all the way around.

    

    

    

   Stan

2. 
   geoffhazel | Sep 22, 2008 03:17am | #11

   I think you could get away with two saddles, on opposite sides of the earth (like the poles).

3. 
   Jeff_Clarke | Sep 22, 2008 04:34am | #12

   The Poles would reject the pipeline running through Krakow -

   Jeff

5. 
   Jim_Allen | Sep 21, 2008 05:50am | #5

   That's a great question.

   1'?

6. 
   DonCanDo | Sep 22, 2008 04:05pm | #13

   Is this for Exxon's new global pipeline? :-)

   This would be a whole lot easier in the metric system...

    

   earth diameter = 7926 miles = 41849280 feet (5280 feet/mile)

   earth radius = 3963 miles (1/2 D) = 20924640 feet

   earth cirumference = 131406739.2 feet (2*pi*R)

    

   pipe cirumference = 131406740.2 feet (1 foot more than earth)

   pipe diameter = 41849280.31 feet (circumference / pi)

   pipe radius = 20924640.15 feet (D / 2)

    

   So the radius for the pipe needs to be .15 feet (a little less than 2 inches).