This command changes all the elevation in the current sewer
network by the same amount. Both the rim elevations and invert
elevations are changed. This command applies when a site design has
been adjusted vertically by the same amount and you want to update
the sewer network to match.
Pulldown Menu Location: Network->Sewer Network
Utilities
Keyboard Command: set_swr_elev
Prerequisite: sewer network structures