Isometric Drawing
- Last UpdatedJan 08, 2026
- 2 minute read
This chapter describes how Isodraft outputs isometric drawings, including the default details Isodraft uses and how to customize them.
Summary of Commands
The following commands were described in this chapter:
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ANGLEACCURACY |
Allows you to specify the degree of accuracy for the reporting of angles. |
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ATTANAME |
Specifies the ways in which support ATTAs are identified. |
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AXES |
Specifies the coordinate system to be used for showing 3D positions on drawings. |
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BENDRADIUS |
Specifies when radii of pulled bends will be shown and in what units. |
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CHARSIZE |
Specifies the character size to be used for annotating text on drawings. |
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CLLENGTHFILE |
Specifies that a pipe centreline length summary, with or without an insulation centreline summary, should be output. |
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CONTINUATIONSYMBOLS |
Plots continuation symbols where pipes are connected to nozzles on Plant equipment. |
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CONTNOTES |
Specifies continuation notes at the end points on drawings for when the connection goes to another isometric. |
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COORDINATES |
Specifies the drawing locations at which spatial coordinates are shown. |
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DIMDIST |
Specifies the ‘standout’ distance, between dimensioning lines and pipe/ component centrelines. |
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DIMENSIONS |
Specifies dimensioning style. |
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ELEVATION |
Specifies whether or not elevation coordinates are to be shown. |
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FALLINGLINES |
Defines the maximum rate of fall allowed in a pipeline before it is shown as a skew. |
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FALLSKEWS |
Controls how dimensioning boxes for skewed/falling pipelines are shown. |
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FLOWARROWS |
Allows flow arrows to be shown on isometric plots. |
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INSULATIONCONTROL |
Specifies whether or not insulation is to be plotted. |
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LEGLENGTH |
Allows you to specify the plotted leg length of elbows, tees and crosses. |
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MESSAGEACCURACY |
Controls how arrowed messages on the isometric are positioned. |
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OUTCOM |
Defines the style in which attributes are shown on the isometric drawing area. |
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OVERALLSKEWS |
Allows you to specify whether triangular skewboxes are shown as overall skewboxes across branches, or as separate skewboxes between branch connections. |
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PICTURESCALE |
Allows you to set the scale of the isometric drawing. |
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REFDIMENSIONS |
Switches the display of reference dimensions on and off. |
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REPEATABILITY |
Creates split ATTAs at automatically generated split points. |
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SKEWBOX |
Controls how skewed piping is shown. |
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SPECBREAK |
Specifies the level at which a change of pipeline specification is noted, and which changes are shown. |
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SPLIT |
Controls the number of drawing sheets used when a pipeline is split over more than one sheet. |
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SUPPORTS |
Defines whether support positions are shown and are dimensioned as overall or string dimensions. |
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TAGGING |
Allows you to identify individual components on the isometric plot by means of name tags. |
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TOLERANCE |
Specifies the maximum misalignment between components regarded as having the same axis. |
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TRACINGCONTROL |
Specifies whether or not tracing is to be plotted. |
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TRUNCATE |
Stops rounding remainders of dimensions being added to the next dimension. |
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TUBESPLITS |
Controls how splits in tube are placed. |
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UNITS |
Specifies units of measurement to be used for Isodraft’s output. |
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WELDID |
Allows you to identify individual welds on the isometric by name. |
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WELDNUMBERS |
Controls numbering the welds on an isometric. |
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WELDTYPE |
Controls which types of end connection are shown on drawings. |
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ZEROLENGTHSKEWS |
Allows you to connect a vertical Branch to a falling line. |
Related Links
- Setting the Detail and Revision Flags
- View Direction
- Origins of Coordinate Axes
- Improving Legibility of the Isometric
- Splitting Long Pipelines
- Dimensioning
- Support Attachment Point Names
- Tolerances In Isometric Plotting
- Flow Arrows
- Plotted Leg Length
- Skewed and Falling Pipelines
- Insulation and Tracing
- Marking Specification Changes
- Plotting Complete System Isometrics
- Welds
- Item Codes and Name Tags on Isometrics
- Pipe Ends and Connecting Nozzles