ISODRAFT Reference Manual
Command Reference Section : Alphabetical Command Reference : SKEWBOX
SKEWBOX
 
Function:
Controls how skewed piping is represented.
Description:
Any skewed sections of piping, whether or not they involve a fall, can be represented either by full boxes (2D or 3D; refer to FALLSKEWS command) or by triangles.
Figure 2:6.
Full and triangle skewboxes.
 
If triangle representation is specified, the following options are available:
•
The dimensions can be shown in standard form or in a non-standard form.
•
The triangle areas can be shown hatched (shaded), partially hatched or unhatched.
•
Skew triangles can be tagged with swing angles in the corners of the triangles. These are output in the first corners of the triangles in the direction the line is detailed.
•
H and V notes can be output in the right angle corners of horizontal (H) and vertical (V) triangles.
•
Overall skewboxes, or skewboxes between branches, can be shown.
Figure 2:7.
Standard and non-standard dimensioning styles, and hatching.
 
Standard dimensioning shows the horizontal and vertical dimension lines of the triangle standing out from the sides of the triangle. Non-standard dimensioning shows the dimension characters positioned along the sides of the triangle itself. The default is standard dimensioning.
The default standout distances for the two types of dimensioning are:
•
13mm line standout for standard dimensioning
•
4mm character standout for non-standard dimensioning
By default, skewbox triangles are highlighted by parallel-line hatching with a spacing of 3mm between the hatching lines. The hatching can be switched off, the spacing altered or an area of the triangles selected for hatching.
Note:
These standout distances may not be set to the same value as other standout distances.
Figure 2:8.
Overall and individual skewboxes.
 
 
Figure 2:9.
Skewed and falling line with hatched triangle skewboxes.
Examples:
SKEWBOX FULL
Skews shown by full boxes
SKEWBOX TRIANGLE
Skews shown by triangles with standard dimensioning, 13mm (default) standout for dimension lines, and hatching at 3mm (default) spacing
SKEWBOX TRIANGLE NSTD HATCH OFF STANDOUT 7MM
Skews shown by triangles with non-standard dimensioning (characters along triangle sides), a character standout of 7mm, and no hatching
 
 
SKEWBOX TRIANGLE STANDOUT 20MM HATCH PART 25
Skews shown by triangles with standard dimensioning, a dimensioning line standout of 20mm, and partial hatching at standard spacing for a length of 25mm (being the maximum height that the shading will reach).
SKEWBOX TRIANGLE TAGS ANGLES
Skews shown by triangles with standard dimensioning, 13mm (default) standout for dimension lines, and hatching at 3mm (default) spacing, with swing angles shown in the first corners.
Related Commands:
FALLINGLINES FALLSKEWS OVERALLSKEWS DIMDISTANCE
Command Syntax:
 
>- SKEWbox -+-- FULL ----.
            |            |
            ‘- TRIangle -+- NSTD --. .-----------------------------------------.
                         |         |/                                          |
                         ‘---------*- HATCH -+- <uval> -+- PART/IAL -+- <uval>-|
                                   |         |          |            |         |
                                   |         |          |            ‘- OFF ---|
                                   |         |          |                      |
                                   |         |          ‘----------------------|
                                   |         |                                 |
                                   |         |-- OFF --------------------------|
                                   |         |                                 |
                                   |         |-- DEFault ----------------------|
                                   |         |                                 |
                                   |         ‘---------------------------------|
                                   |                                           |
                                   |-- STANdout --+-- <uval> ------------------|
                                   |              |                            |
                                   |              |-- DEFault -----------------|
                                   |              |                            |
                                   |              ‘----------------------------|
                                   |                                           |
                                   |-- TAGS ------+-- ANGles --.               |
                                   |              |            |               |
                                   |              |-- HV ------|               |
                                   |              |            |               |
                                   |              |-- ON ------|               |
                                   |              |            |               |
                                   |              ‘-- OFF -----+---------------|
                                   |                                           |
                                   ‘-------------------------------------------+>
Querying:
Q SKEWbox
Q OPTIONS
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