AutoGenerate Isometry - Specify Actions (Iso)

Isometry > Create > AutoGenerate isometry

Plant Engineering > Isometry > AutoGenerate isometry

On the right hand side of the Plant Engineering Isometry dialogue window, you can define various options and actions for the isometry documents to be created:

• the Drawing frame,
• the Projection,
• the Scale, and
• various Actions you want to carry out on a pipeline.

The settings apply to the pipeline which is marked on the left hand side of the list. If you want to apply the settings for one pipeline to all other selected pipelines, click the Apply to all pipelines button.

Options and actions for isometry documents

Drawing frame

For each pipeline, a different isometry drawing frame can be selected. Select the desired frame from the listbox.

If you do not want to use a drawing frame, leave the corresponding input field empty.

You can individually determine the area of the drawing frame used by the isometry. This enables e.g. the creation of asymmetrical filling margins etc. Furthermore, you can block drawing frame areas against use by the isometry

Projection

For each pipeline, the required projection can be independently selected. You can check the respective pipeline projections in the HiCAD graphics window.

To assign a projection to a pipeline, proceed as follows:

• In the pipeline list, click the required row.
• Select the required entry from the Projection listbox.

Scale

When creating a Plant Engineering isometry you can preset the scale for the isometry if required. If you do not preset the scale, HiCAD determines the scale automatically. After creating an isometry, the last calculated scale is saved and can be adapted before re-creating the isometry. Once set, the scale remains the same until it is deactivated again (and a new isometry is created while the scale is deactivated).

Please note:

• The specified scale refers to the scale for the isometric drawing. Please note that the isometric drawing represents a projection, causing pipe lengths to appear slightly compressed in the isometry compared with 2-D lengths, e.g. in drawing frames. The compression factor is approx. 82% or, to be more precise, cos(asin(tan(30°)), for distances running parallel to the coordinate system.
• If the pipeline shortening option is active, the concept of a fixed scale loses its significance. Of course, the isometry will continue to possess a "pro forma" drawing scale, which can also be overwritten manually. In such cases, however, the drawing scale is to be considered as a mere scaling factor.

Actions

You can specify via activation of the appropriate checkboxes which of the actions below you want to be executed on the pipelines.

Click the Select all button to activate all actions in one step.

• Pipe shortening
  If you select this option, the active pipeline is not represented according to scale in order to assist the visualisation of the drawing. Straight pipes may be shortened or lengthen to accommodate all entries. When pipe shortening is calculated, settings in the Pipe shortening tab are taken into account.
  The pipe shortening can even be applied if a pipeline contains closed "loops".
• Dimensioning
  Generates dimensioning for guidelines, i.e. composite edges, belonging to the active pipeline, whereby a dimension line with appropriate dimension is generated fr each edge. Let us assume that the name of the pipeline is RBL0001, the guideline parts Q_ANL_001, Q_ANL_002, Q_ANL_003 etc. are dimensioned. HiCAD permits a gap of up to four increments between guideline numbers. Automatic dimensioning works in this way if, for example, only guideline parts Q_ANL_003, Q_ANL_008 and Q_ANL_010 exist.

HiCAD creates a new sub-part of the pipelines main part, i.e. RBL0001, for dimensioning. The sub-parts SDR_ANL and MSL_ANL RBM_ANL are in turn created. The sub-parts Y_ANL_nnn containing rise triangles, are attached to the sub-part SDR_ANL. Rise triangles are consecutively numbered, i.e. nnn = 001, 002, 003 etc. Hi-CAD assigns any existing projection lines to MSL_ANL, e.g. automatically created projection lines for circular arcs.

Please note:
Guidelines are only insertion aids for layout plans and do not influence the dimensioning in isometric drawings. This means, pipelines that begin or end with an elbow or contain a 180° bend are fully dimensioned in isometric drawings.

• Part item numbers
  HiCAD automatically assigns part item numbers in logical sequence according to given settings, and outputs them graphically as described in the chapters Text/Lines and Text objects.
• Weld seam item numbers
  If it has nor already been carried out, HiCAD first executes the Welded connection info function, and then assigns welded connection item numbers in logical sequence according to given settings and outputs them graphically as described in the chapters Text/Lines and Text objects.
• Connection coordinates
  HiCAD creates and outputs text objects graphically, as described in the chapters Text/Lines and Text objects.
• Flow direction arrows
  Initially, the direction of flow is arbitrary, whereby only logical combinations are applied to branches. HiCAD creates and automatically positions and aligns flow-direction arrows according to the settings described in the Symbols chapter. You can invoke the Set flow direction function afterwards and change the flow direction interactively.
• Insulation symbols
  It is now possible to set symbols for insulation, heating and cooling in the isometry automatically. Like, for instance, the flow direction symbol, these symbols are also aligned at the centre line of a straight pipe and taken from the symbol table (\sys\symzab.sza).
• North arrow
  North arrows are only inserted in isometric drawings if the appropriate pre-determination exists. The position of the arrow is specified in the MAKROANL\AIS.INI file.

• Tripod for orientations
  A “tripod” indicating the orientation of the coordinate system can be inserted in isometric drawings. The position of the arrow is specified in the MAKROANL\AIS.INI file.

• Insulation annotation
  If this checkbox is active, insulations in the isometry are annotated.
• Bills of Materials
  This action allows a direct integration of BOMs into the isometry document.

 Related Topics

Generate Isometry Automatically (Iso)• Pipeline Isometry (PE) • Isometry Functions for the Layout Plan (Iso)