Radius to Girder Rings
Defines the radial distance from the center of the tank to each girder ring. If the location of one girder ring is specified, the distance to all girder rings must be defined.
Number of Girders in Ring
Defines the number of girders in each ring. If the number of girders in any one ring is specified, the number of girders in all rings must also be specified. This value is optional.