zephyrgold
11-12-2005, 06:32 PM
When receiving drawings from external sources to be used as Xrefs, it is important that an unchanged master drawing is kept for record purposes. Only when a master has been created can an Xref be purged, audited and have its linetypes and colours altered to suit your esteemed project.
When a drawing is to be used as an Xref, it is to be inserted into a dedicated contract sub-directory called ‘Xref’. If possible it is advisable that the Xref keeps the same name as the original drawing. This allows later revisions to be inserted in its place, which will automatically update any drawing which contains that Xref. If the Xref name has to be changed for any reason, it will help if the name reflects the purpose of the Xref, e.g. ‘Ground’.
It is of the utmost importance that Xrefs belonging to the same contract have a common setting out point and insertion point. This allows different services on different levels to be superimposed on one another for co-ordination exercises.
It is also advisable to avoid nesting Xrefs, i.e. attaching an Xref to a drawing which then in turn is attached (complete with Xref), to another drawing. By avoiding this practice, problems with pathing can be avoided later.
When attaching an Xref to a drawing, it must be placed on a dedicated layer/layers called ‘Xref’, (XREF1, XREF2, Etc.). This will enable the user to have a master control switch to manipulate the Xrefs in their entirety with layer control commands.
For Xrefs used in drawings as baseplans, all entities must be changed to colour by layer, and the colour of all the Xref layers can then be altered to suit, i.e. all to number 8 (grey) for a background effect.
The VISRETAIN command should be set to (1) if an Xref, which is attached, is going to be left attached to the drawing. This will retain any amendments made to the layers of all the Xrefs contained within the drawing.
Avoid attaching Xrefs with the Xrefs VISRETAIN set at 1.
The above system is a basic profile, which must be followed. However, on many larger jobs, which may be very complex, it is recommended that a meeting is held at the beginning of the project to finalise any revisions to the system that may be required.
zephyrgold
http://www.1autocad.com
When a drawing is to be used as an Xref, it is to be inserted into a dedicated contract sub-directory called ‘Xref’. If possible it is advisable that the Xref keeps the same name as the original drawing. This allows later revisions to be inserted in its place, which will automatically update any drawing which contains that Xref. If the Xref name has to be changed for any reason, it will help if the name reflects the purpose of the Xref, e.g. ‘Ground’.
It is of the utmost importance that Xrefs belonging to the same contract have a common setting out point and insertion point. This allows different services on different levels to be superimposed on one another for co-ordination exercises.
It is also advisable to avoid nesting Xrefs, i.e. attaching an Xref to a drawing which then in turn is attached (complete with Xref), to another drawing. By avoiding this practice, problems with pathing can be avoided later.
When attaching an Xref to a drawing, it must be placed on a dedicated layer/layers called ‘Xref’, (XREF1, XREF2, Etc.). This will enable the user to have a master control switch to manipulate the Xrefs in their entirety with layer control commands.
For Xrefs used in drawings as baseplans, all entities must be changed to colour by layer, and the colour of all the Xref layers can then be altered to suit, i.e. all to number 8 (grey) for a background effect.
The VISRETAIN command should be set to (1) if an Xref, which is attached, is going to be left attached to the drawing. This will retain any amendments made to the layers of all the Xrefs contained within the drawing.
Avoid attaching Xrefs with the Xrefs VISRETAIN set at 1.
The above system is a basic profile, which must be followed. However, on many larger jobs, which may be very complex, it is recommended that a meeting is held at the beginning of the project to finalise any revisions to the system that may be required.
zephyrgold
http://www.1autocad.com