Autodesk 507B1-90A211-1301 - NavisWorks Manage 2010, User Manual

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Work with Files
In Autodesk Navisworks you can open files originated from a variety of CAD
applications.
You can combine these files together, and create a single Autodesk Navisworks
file with a whole-project view of your model. This file brings together geometry
and data created by multi-disciplinary teams, and enables you to explore and
review complex models in real-time.
Native File Formats
Autodesk Navisworks has three native file formats: NWD, NWF, and
NWC.
NWD File Format
An NWD file contains all model geometry together with review
markups. You can think of an NWD file as a snapshot of the current
state of the model.
NWD files are very small, as they compress the CAD data by up to
80% of the original size.
NWF File Format
An NWF file contains links to the original native files (as listed on
the Selection Tree) together with review markups. No model
geometry is saved with this file format; this makes an NWF
considerably smaller in size than an NWD.
NWC File Format (Cache Files)
By default, when you open or append any native CAD or laser scan
files in Autodesk Navisworks, a cache file is created in the same
directory and with the same name as the original file, but with an
.nwc extension.
NWC files are smaller than the original files, and speed up your
access to commonly used files. When you next open file or append
file in Autodesk Navisworks, the data is read from the corresponding
cache file if it is newer than the original file. If the cache file is older,
which means the original file has changed, Autodesk Navisworks
converts the updated file, and creates a new cache file for it.
See also:
■ “ NWC File Options ” on page 409
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