Hanger and Supports

The PDMS elements ATTA or SHU can be used for hanger or support points. Default value is the ATTAchment point.

ATTAchment points are only transferred to Rohr2, if the value of the attribute ATType is set to "HANG", "NULL" or "" (empty/unset) and additionally the value of the attribute FStatus is not set to "INSULATION".

Both elements are provided with the UDAs :USTHTYP (hanger type) and :USTSCHTYP (stress calculated hanger type).

The UDA :USTHTYP can be used by the pipe designer to define a hanger type before the stress calculation. The selection is limited by the hanger types of the company Witzenmann.

The UDA :USTSCHTYP is set by Rohr2 and contains the hanger type after the stress calculation by Rohr2. If there is an equivalent hanger type of the company Witzenmann, the UDA :USTHTYP will be overwritten during the import process of the Rohr2 data.

When transferring geometry to Rohr2 the UDA :USTSCHTYP is checked for a hanger type that had already been transferred from Rohr2. In that case it would be transferred to Rohr2 again. If the UDA does not contain a valid value, then the UDA :USTHTYP is analyzed and transferred if necessary. If even that UDA does not contain a valid value then the standard hanger type from the Settings window will be used.

The advantage of that procedure is that the pipe designer does not have to define any hanger types in PDMS. The stress calculator gets the chance to define a default hanger type for the first stress calculation in Rohr2. For example, it is possible to define a constant hanger for steam pipes or a friction-type bearing for water pipes as a default. The following alternatives can be selected in Settings:

• Constant hanger <Standard>

• Rigid hanger

• Friction-type bearing

• Spring hanger