Defining a New Hanger

Hanger definition is a special case. There is only one existing hanger SKEY, namely 01HG, which should form the basis for all newly defined hanger shapes.

For hangers which lie along the pipeline and which do not need to be reoriented, the hanger shape can be defined as for a normal fitting. For example, the existing hanger 01HG might be defined as shown in the Defining a hanger image.

Defining a hanger

For hangers that require an orientation (that means, those that must be drawn above/below, east/west or north/south of the pipeline), the hanger must be defined in two stages. This technique represents a special case of the SPINDLE command described in Spindle SKEYS.

First, the spindle SKEY (99SP) must be defined as the required shape in the normal way, but noting that the spindle must be defined on its side; that is, with the axis of the spindle stem in the x direction and the plane of the handwheel through the y direction. See the Defining a spindle key image.

Defining a spindle key

Secondly, the hanger SKEY (99HG in this example) must be defined as just a start point, a spindle point, with an associated spindle SKEY (99SP in this example), and a finish point, all of which must be coincident: see the Defining a hanger with a spindle key image.

Defining a hanger with a spindle key

Note: That the P3 of the ATTA gives the spindle direction of the hanger, and so it must be perpendicular to the line.

The orientation of the hanger 99HG is retrieved from the database.