BAD CAD - an
had an opportunity (nice way to put it) to investigate some CAD
files that were not in optimal shape recently. They had a
checkered history of creation, so I was wary of the files and
knew they needed to be checked out.
were created with a combination of data that included client
files, prior architects files and my in-house crew. They
we opening very slow and sometimes failing altogether.
started looking into the troubles and followed a process that I
have used over the years to finding out the
have seen a lot of BAD files in my day. It is often a
combination of many factors that all combine to make a file unusable
is my definition of BAD CAD:
CAD File that is created or modified in such a way as to cause one
of the following:
to Export, E-Transmit, Save As... , etc
decrease in productivity
output to hardcopy
look in five areas for my troubleshooting:
Files - This is the first place I look. Most often the file or
an object in the file is corrupt. I need to find out if the
problem is resident in the files as they were created, edited,
plotted, etc. I look here first and spread my investigation to
the following areas in order
Machine - Next I look to the persons PC. Does the problem
only happen on one machine? Is it a machine or system
variable that is set incorrectly? Is it hardware troubles?
User - I always talk to the user to find out what has happened,
what happened before it broke and how they got to where they
are. It is quite often a mistake, a misunderstood tool or a
bad click that got them here.
Server - Sometimes the network or server hardware acts up.
Don't forget to look here.
Software - There are always "bugs" in the
software. A tool that is not yet mature, not designed to be
used in the way it is used or just not programmed correctly.
will expand each one of these in the next few Journals, looking
deeply into the causes and effects of BAD CAD
will start with the files.