SCI-P-268
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SUMMARY
This publication is one of a series of SCI publications that document the second
release of the CIMsteel Integration Standards (CIS/2). This publication documents version
five of the CIMsteel Logical Product Model (LPM/5). The Logical Product Model is an
interpretation of the information requirements (described elsewhere), which encapsulates
the concepts used in the domain of Structural Engineering in a form that can be
implemented in computer systems.
The main body of this publication documents the Short Form of LPM/5. It provides
illustrated textual descriptions of the entities, with their attributes and formal
propositions (rules & constraints), together with references to STEP resources. It
does not repeat the definitions of those STEP entities that have been used from the
Generic Resources. The definitions for the entities that have specifically defined for
LPM/5 are presented within one of 17 subject areas. A brief guide to the EXPRESS Language
is discussed in the 'Implementation Guide'. The philosophy behind LPM/5 and how it was
developed are discussed elsewhere.
Appendix A presents the complete LPM/5 that underlies CIS/2 as
an EXPRESS schema in its 'long form'; that is, as one single schema with all the
inter-schema references resolved. The Long Form contains no definitions or explanations,
merely an EXPRESS long form listing of the CIS/2.0 implementation schema.
(Alternatively, the LPM/5 Long Form Express schema is also available
in an indexed frames view.)
Appendix B provides a graphical presentation (in
EXPRESS-G) of the CIS/2.0 implementation schema (i.e. the Long Form of LPM/5). The
notation used in the EXPRESS-G diagrams is discussed in the 'Implementation Guide'.
