Specifications

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4. The next cell down is the Rotation Angle. In our simple model we will not need to
rotate the surface, but in complex models this can be very handy especially when
designing curved areas like the back of an arena.
5. Finally, there are two boxes that can either be checked or unchecked:
 Hidden - This is used when you want to omit the surface from SPL
calculations. As an example, maybe you are only interested in viewing the
main surface of a venue and there is a balcony in the way. By hiding the
balcony, it will be disregarded in the SPL calculations even though it is still
there and visible as an opaque surface. Simply uncheck the box to bring the
surface back into the model for calculation.
 Locked - Many times during the creation of a model, the user may
inadvertently move parts of the model while creating or viewing other
items. By checking the “Locked” button, the user can be assured that the
current surface cannot be moved accidentally or altered without unlocking
it first.
Now that the main surface is completed, go ahead and free rotate around the model
to get used to viewing things from different angles. You can also snap to a section or
plan view using the snap buttons located on the toolbar at the top of the screen.
5.3 Options For Adding A New Surface
There are two options for adding a new surface to your venue. Let’s get an
understanding of the difference between them before moving along in modeling our
venue.