The RIM Elevation is a stagnant number once you enter an elevation it does not update in relation to any surface changes. RIM Elevation would be better suited for use if it can be defined with an offset.

Another field would be needed:

RIM Depression Depth (inches)

• Enter Inches

The RIM Elevation would need to use this expression:

RIM Elevation

Ground Elevation - RIM Depression Depth (inches)

It was suggested by Bentley support to use the Node offset but this moves the whole Top and adjusts the Ground Elevation. We just want the grate elevation to adjust so I thought the RIM Elevation would be a good property to use to record the Depression Elevation. I have provided our Drainage Structure details.