"saag" wrote in message
My question is does it matter if the wood beams lie flat on the support
posts or on their bottom edge?

If you lay them flat, they will flex and the floor will sag again. Put them
on edge.



Also how many pounds of concrete would it take to fill the 3 holes?
thanks

You can also fill with some rock to take up some of the void. Better yet,
use a Sonotube in the hole and fill around it with dirt. That can save
lugging a couple hundred pounds of concrete mix. To calculate the volume Pi
x r2 x h The way you are set up now, you'll be lugging about 800 pounds of
the stuff. Using a 10" tube you can cut that down to about 250 or so.