Trimble Business Center

        If I make a subgrade adjustment it shows in the cross section and 3d view correctly, as 'FD adjusted' 12 inches below 'Finish Design'.

       However, if I run a Earthwork Report with 'Finish Design' as the initial surface and 'FD with subgrade adjusted' as the final surface it calculates as fill.   Also, if I create a Cut / Fill Map with the same surfaces, it shows a fill of 12 inches.

      I have even tried switching the initial and final surfaces, but i get the same results,  cut / fill map shows fill, and report shows fill.

       It seen like something is telling it that the 'FD with Subgrade Adjusted' is above the 'Finish Design'

TBC is trying to keep you out of trouble.  Normally you start from original ground, cut and or fill to finished with subgrades adjusted and then fill to finished design.  Due to their classification it forces the original and final.  If you really want to go from finished to finished with subgrade adjusted then change each surface to be unclassified and run the earthwork command again.

tim

Tim,

   Thanks for the quick reply.

Your correct changing the classification made the reports and cut fill maps look right.

not sure I understand trimble's logic, but at least I know how to make it work.

  Thanks again