The Cableway Nominal Sizes node (the sheet in the Ductbank.xls workbook) controls which cross sections are available in the specifications. The sizes relate to the rectangular cross sections.
Identifies the duct bank specification for the cross section; that is, DBS-0.
Identifies the outfitting cross section (OCS). Examples are OCS-4X4, OCS-6X4, and OCS-6x6. These cross section examples are defined in the OutfittingCrossSections sheet. If you include cross section names using this sheet, the names must be defined on this sheet in AllCommon.xls.