This is probably already a thread so sorry.
Our team is trying to figure out how tall is the overpass from the floor to the top of the pipe. Where the ball sits.
Since the pipe is an inch in a half thick is it six in a half feet from the bottom of that pipe or the top.
It would be great help, thanks!.
Search is your friend. It’s been answered both here on CD
http://www.chiefdelphi.com/forums/showthread.php?t=62518&highlight=overpass
and on FIRST Q&A.
6.5 feet to the top of the pipe.
top
Thank you very much. 
Take a look at the 2008 Game Specific Drawings from FIRST, available here:
http://www.usfirst.org/community/frc/content.aspx?id=7684
Specifically, you want to know the dimensions of pieces 06 and 07, which is the end piece that supports the overpass, and is described in diagrams W5 and W6.
W6 specifies a height of 76 3/8" from the bottom of the overpass connector to the bottom of the piece. This translates into 6’ 4 3/8".
W5 describes the footing for the piece, which (if i’m reading it right) says the thickness of the floorplate is 1/8".
And as you’ve said, the pipe is 1 1/2" OD.
Add all those together, and you get 6 1/2’ from the floor to the very top of the pipe that supports the ball. I would allow for some slight variation in your design, however - maybe give or take an inch.
Official word (in Section 6) is the variation (caused by different setup crews) is up to 1/4". They design the fields to go together the same way every time, so I’d take their word for it.
… and now that we have answered this question five times over with the very same answer, can this thread please stop unless someone has some NEW information to add?
.
You have 2377 posts with that post I quoted…
That’s new information, and interesting to myself at least… 