the last while, it has come to my attention that some people
are losing their Modelling databases because of a misconception
about whether or not they have been saved correctly.
you manually pick the command to allow you to save the surfaces
then you know that you in fact have done so (described in
Step 4 below). If you forget to save the surfaces and you
exit the program then we will remind you that you still
have surfaces in memory and we ask if you wish to save them
or discard them. This is where the confusion is normally
If you have one or more surfaces in memory that have not
been saved, and you exit MSCAD, we will bring up the following
This dialog will only show up when you exit the entire program.
If you stay in the program BUT you have exited the current
drawing, then you need to know that the surfaces remain
in memory and will be available in the next job you work
in. Be sure to save the surfaces with the correct job name
so as to not be confused when you return to the job at a
later date. [You can clear the surfaces from the memory
by deleting the surfaces. Step 2) below shows you how to
save your surfaces but there is a Delete button that can
be used if required.]
If you pick the NO button, the surfaces are not saved and
we continue to exit the program. By not saving the surfaces
you would need to extract the points and break lines again
at a later date to recreate the surfaces again from scratch.
you pick the YES button, you are then shown this dialog
you get this box you need to pick the surface names, on
the left side of the box, that you wish to save. In the
above example I have picked the Ground and Design surfaces
to save. They become highlighted to let you know they are
selected. Now I have to pick the Write QSB button
near the bottom right to actually save the surfaces to a
file. Prior to picking the two surfaces on the left, the
Write QSB button, along with most of the others, were all
greyed out and not available to you.
here is the problem that some have run into: When
they are shown the above screen, they are making the assumption
that if they simply pick the OK button that the surfaces
are automatically saved. In fact it may appear that this
happens because as you are exiting the program, and you
have chosen the option to save the surfaces (Step 1), and
if you pick the OK button here (Step 2), we finish exiting
the program without any further messages coming up.
Unfortunately they are missing the following key step! And
your surfaces are in fact NOT saved.
Once you pick the Write QSB button mentioned above,
you will then be shown the following dialog box;
to the location on the hard drive that you wish to save
the QSB file and give the file a name. Remember that this
QSB file will have to be reloaded into the MSCAD Job at
a later date if you need to work with it again. Also remember
that a QSB file can be loaded into any MSCAD job, not just
the one it was created in.
you have named the file and picked the Save button, the
surfaces are now safe and can be retrieved at a later date.
If you started at Step 1 above, then at this point, we exit
the program as normal. If you started with Step 4 and then
went to Step 2 and 3, at this point we return you to Step
2 and allow you to continue manually.
If you manually choose the Surface Operations command, while
in the MSCAD program, it will bring up the same dialog box
shown in step 2 and you will not see the box shown in Step
1. The Surface Operations command is found under this menu;
you pick this command you are able to manually save the
Modelling surface data. This brings up the dialog box shown
in Step 2. You can do this as many times in the drawing
as required. You can also save different surfaces to different
QSB files if you wish. This would be the recommended method
of controlling your Surface files. When you exit the Surface
Operations command you will return to the MSCAD program
to continue as you wish, knowing that your surfaces are
hope this explanation will save some of you the problem
of finding that you did not save your surface files even
though you were sure you said yes to the dialog shown in
W. Cameron, C.E.T.