In article ,
"Kevin Brooks" wrote:

"Chad Irby" wrote in message
m...

You assumed the dam, as built, is one big structure of a certain
cross-section, that the amount of concrete used on the dam *project* is
the same as that just used on the dam (as opposed to the other dam
structures, locks, roads, powerhouses), et cetera.

I used the only numbers I had available. You have offered exactly--zip in
terms of actual numbers.

I did mention that the dam didn't have as big a cross-section as you
think, with approximate thicknesses. You chose to ignore that, so it's
your problem, not mine.

--
cirby at cfl.rr.com

Remember: Objects in rearview mirror may be hallucinations.
Slam on brakes accordingly.