ISODRAFT
User Guide
Symbol Keys : Defining a New Hanger
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 Figure 11:2.: Defining a hanger:
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Figure 11:2.
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For hangers that require an orientation (i.e. 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 Figure 11:3.: Defining a spindle key.
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Figure 11:3.
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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 Figure 11:4.: Defining a hanger with a spindle key.
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Figure 11:4.
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