I can see that our original elevation measurements have been scaled in some way and would like to confirm the calculation to create the slope % (Field 59). Currently, we have scored assessments with these scaled elevations, but "0.00" for the slope.
Is the following formula correct?
Structure Slope (%) = [ Inlet Invert Elevation (ft) - Outlet Invert Elevation (ft) ] / Structure Length (ft)
Field 59 = [ Field 52 - Field 55 ] / Field 58
Is it standard practice to provide these values as a negative number or a positive number?