Skewed Lines

Skewed pipelines are shown by skewboxes (that is by boxing in the skewed length with dimensioning lines which show the horizontal and vertical differences between the end coordinates). The skewboxes can be full boxes or triangles, as specified by the SKEWBOX command.

If triangles are specified, five further 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) or un-hatched

• Swing angles can be displayed in the corners of the triangles

• H and V notes can be shown in the right angle corners of horizontal and vertical triangles

• Overall skewboxes, or skewboxes between branches can be shown

Skewbox triangles can have two styles of dimensioning:

• 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.

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, or the spacing altered.

The user can specify whether triangular skewboxes are shown as overall skewboxes across branches, or as separate skewboxes between branch connections using the OVERALLSKEWS command.