1 Scope
The primary purpose of this International Standard is the provision of data structures for electronic product catalogues to transmit building servicesproduct data automatically into models of building services software applications. This includes a meta model for the specification of product classes and their properties and a meta model for the product data which is exchanged in product catalogues. Product data has to follow the specifications for their product groups.
The standard series is split into two areas:
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— Basic concepts like conceptual models, languages, geometry representations, and XML schemas for data exchange are provided in the Conceptual Parts of the standard series (Parts with a one digit number).
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— Using these resources, the Content Parts of this International Standard define for various product groups of building services concrete models for the description and the exchange of products.
The basic concepts which are provided by the standard series include the following:
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— resources for the specification of selection properties and a selection property tree guiding the selection process to identify the appropriate product variant from a parametric electronic catalogue;
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— resources for the specification of dependent properties and their computational functions to compute their values in dependency from installation parameters;
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— resources for the specification of composition relationships between products which can be used to model structures like bill of materials or accessory relationships;
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— resources for a parametric constructed solid geometry (CSG) based geometry representation containing specific CSG elements geometrical elements which are typical for building servicesproducts.
This part of ISO 16757 specifies
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— the underlying concepts,
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— a generic model specifying the available modelling elements and their relationships, and
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— a framework for the specification of the Content Parts by describing the elements which are to be provided by these Parts.
Not in scope of this part of ISO 16757 are the following:
NOTE Geometry is described in ISO 16757‑2.
NOTE The script language is described in ISO 16757‑3.
NOTE The XML schema is described in ISO 16757‑5.
NOTE The relationships to standards of the area of buildingSMART is described in ISO 16757‑4.
NOTE 1 Definitions of models for specific product areas are described in ISO 16757‑10 et. seq., the Content Parts of ISO 16757.
NOTE 2 All parts are still under development.