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Small earth wall 108

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This page contains content from ISOM2000   This page contains content from Ashby Mapping    revision 01/00

Specifications

108 Small earth wall

A small or partly ruined earth wall shall be shown with a dashed line. Minimum height is 0.5m

Colour: brown.

Line width 0.14mm, line length 2.25mm, gap 0.25mm

Dot diameter 0.4mm, dot spacing 2.5mm

ISOM 1990 Definition

A partly ruined earth wall may be shown with a dashed line.

OCAD Methods

Defined as line symbol 108.0. Can be drawn with any tool but bézier mode is preferable.

If the bézier tool is used, care must be taken as dot and gap spacing are dependent on location of nodes and handles. See bézier topic for more information.

OCAD default definition

The default definition has a gap between dashes of 0.3mm, compared with the ISOM specified 0.25mm. Variation is allowed in the specification, see the Variations in Symbols topic for details.

Drawing Considerations

See minimum dimensions but specifically - shortest dashed line: at least two dashes.

Earthwalls larger than about 1m should use the earth wall symbol. This symbol may be used for stone walls that have become overgrown and have the appearance of earthbanks.

Optimising junctions of dashed lines

First try adding a node at, or close to, the junction, next try the cut and reverse line tools. If the spacing is still incorrect, cut back and add an extra line at the junction, either with or without gaps.

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International Specification for Orienteering Maps produced by the International Orienteering Federation
OCAD produced by Hans Steinegger Software. © 1988-1999 Hans Steinegger. ® OCAD is a registered trademark of Hans Steinegger
This document has been written and coded by Peter Hornsby of Ashby Mapping
Apologies for any mistakes and errors; please inform details of any problems, thanks.
Produced for the Ashby Mapping internet site on 20 November 1997 and 1 December 1999  ©1997-2000 Ashby Mapping
Revised 28 December 1999, 23 March 2000