Jim Elbrecht wrote:
"HeyBub" wrote:

-snip-
Common red brick weighs 120lbs/cu ft. You've got 20"(1.7 ft) x 20" x
25' =
1.7x1.7x25 = 71 cu ft of chimney. That, times 120, is about 8500 lbs.

'Course that's for a stack of red bricks. Given that the stack's
hollow, the total might be a bit less.

Thanks- I figured someone would have the numbers in their head-- I'm
feeling a lot better about my lolly column rated at 18000pounds.
Jim

Actually, I didn't. I Googled "Density+red+brick" and got:

http://www.simetric.co.uk/si_materials.htm

among others.