Industrial automation systems and integration — Product data representation and exchange — Part 225: Application protocol: Building elements using explicit shape representation

This part of ISO 10303 specifies the use of the integrated resources necessary for the scope and information requirements for the exchange of building element shape, property, and spatial configuration information between application systems with explicit shape representations. Building elements are those physical things of which a building is composed, such as structural elements, enclosing and separating elements, service elements, fixtures and equipment, and spaces. NOTE 1 - See 3.3.1.3 for definitions of these terms and concepts. Building element shape, property, and spatial configuration information requirements can be used at all stages of the life cycle of a building, including the design process, construction, and maintenance. Building element shape, property, and spatial configuration information requirements specified in this part of ISO 10303 support the following activities: — concurrent design processes or building design iterations; —integration of building structure designs with building systems designs to enable design analysis; — building design visualization; — specifications for construction and maintenance; — analysis and review. NOTE 2 - "Support" of these activities does not imply satisfaction. Satisfaction of the information requirements for construction, for example, would require a complete building design. This part of ISO 10303 only satisfies a portion of information requirements for this activity. See 3.3.1.1. EXAMPLE 1 - A design analysis function combines the building structure design with building service systems designs (for systems such as heating, ventilation, and air condition (HVAC) and piping) to check for interferences of the structural elements with piping and air conditioning elements. NOTE 3 - The application activity model in annex F provides a graphical representation of the processes and information flows that are the basis for the definition of the scope of this part of ISO 10303. The following are within the scope of this part of ISO 10303: — explicit representation of the three-dimensional shape of building elements using boundary representation (B-rep) solid models, swept solid models, or constructive solid geometry (CSG) models. — the spatial configuration of building elements that comprise the assembled building; — building structures that represent physically distinct buildings that are part of a single building complex; — non-structural elements that enclose a building or separate areas within a building; — the shape and arrangement of equipment and service elements that provide services to a building; EXAMPLE 2 - Service elements include items such as plumbing, ductwork, and conduits. Equipment includes items such as compressors, furnaces, or water heaters. — the shape and arrangement of fixtures in a building; EXAMPLE 3 - Fixtures include items such as furniture and installed items like doorknobs. — specification of spaces and levels; EXAMPLE 4 - Spaces include rooms, accesses, and hallways. Levels include concepts such as floors and mezzanines of a building. — the shape of the site on which the building will be erected; — specification of properties of building elements, including material composition; — specification of classification information; EXAMPLE 5 - Elements may be classified for reasons which include cost analysis, acoustics, or safety. — association of properties and classification information to building elements; — changes to building element shape, property, and spatial configuration information; — association of approvals with building element shape, property, and spatial configuration information; — as-built record of the building. The following are outside the scope of this part of ISO 10303: — 2D shape representation and draughting presentation; — the contents of building standards; — implicit representation of building elements through selection of standard parameters; — structural analysis of buildi

Systèmes d'automatisation industrielle et intégration — Représentation et échange de données de produits — Partie 225: Protocole d'application: Éléments de construction utilisant la représentation des formes explicites

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Publication Date
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INTERNATIONAL ISO
STANDARD 10303-225
First edition
1999-12-01
Industrial automation systems and
integration — Product data representation
and exchange —
Part 225:
Application protocol: Building elements
using explicit shape representation
Systèmes d'automatisation industrielle et intégration — Représentation et
échange de données de produits —
Partie 225: Protocole d'application: Éléments de construction utilisant la
représentation des formes explicites
Reference number
ISO 10303-225:1999(E)
©
ISO 1999

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ISO 10303-225:1999(E)
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ii © ISO 1999 – All rights reserved

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ISO 10303-225:1999(E)
©ISO
Contents Page
1 Scope . 1
2 Normative references . 3
3 Definitions and abbreviations . 4
3.1 Terms defined in ISO 10303-1 . 4
3.2 Terms defined in ISO 10303-31 . 5
3.3 Other definitions . 5
3.3.1 building design . 5
3.3.2 building component . 5
3.3.3 enclosing and separating elements . 5
3.3.4 explicit shape representation . 5
3.3.5 fixtures and equipment . 5
3.3.6 service elements . 5
3.3.7 spaces . 6
3.3.8 spatial configuration . 6
3.3.9 structural elements . 6
3.4 Abbreviations . 6
4 Information requirements . 7
4.1 Units of functionality . 7
4.1.1 advanced_geometric_representation UoF . 8
4.1.2 building_component UoF . 8
4.1.3 building_composition UoF . 9
4.1.4 building_items UoF . 10
4.1.5 design_administration UoF . 11
4.1.6 elementary_csg_representation UoF . 11
4.1.7 elementary_geometric_representation UoF . 12
4.1.8 faceted_csg_representation UoF . 12
4.1.9 faceted_geometric_representation UoF . 12
4.1.10 property_and_classification UoF . 13
4.1.11 space_boundary_representation UoF . 13
4.2 Application objects . 14
4.3 Application assertions . 58
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ISO 10303-225:1999(E) ©ISO
5 Application interpreted model . 67
5.1 Mapping table . 67
5.2 AIM EXPRESS short listing . 155
6 Conformance requirements . 220
Annexes
A AIM EXPRESS expanded listing . 233
B AIM short names of entities . 307
C Implementation method specific requirements . 316
D Protocol Implementation Conformance Statement (PICS) proforma . 317
E Information object registration . 318
E.1 Document identification . 318
E.2 Schema identification . 318
F Application activity model . 319
F.1 Application activity model definitions and abbreviations . 319
F.2 Application activity model diagrams . 322
G Application reference model . 328
H AIM EXPRESS-G . 336
J AIM EXPRESS . 366
K Bibliography . 367
Index . 368
Figures
Figure 1 - Data planning model . xii
Figure 2 - Nested relationship of shape representation functionality . . xiii
Figure 3 - Building components . 9
Figure 4 - Building levels . 23
Figure 5 - Building section . 26
Figure 6 - Detail, outline and envelope shapes . 30
Figure 7 - Kinds of element assemblies . 36
Figure 8 - Examples of reference curves . 41
Figure 9 - Kinds of openings . 43
Figure 10 - Services element: HVAC system . 48
Figure 11 - Breaklines and survey points in site_shape_representation . 50
Figure 12 - Spaces . 51
Figure 13 - Kinds of Structure_enclosure_elements . 53
Figure F.1 - IDEF0 basic notation . 319
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©ISO ISO 10303-225:1999(E)
Foreword
The International Organization for Standardization (ISO) is a worldwide federation of national
standards bodies (ISO member bodies). The work of preparing International Standards is normally
carried out through ISO technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part
in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
Draft International Standards adopted by technical committees are circulated to the member bodies for
voting. Publication as an International Standard requires approval by at least 75% of the member
bodies casting a vote.
International Standard ISO 10303-225 was prepared by Technical Committee ISO/TC 184, Industrial
automation systems and integration, Subcommittee SC4, Industrial data.
ISO 10303 consists of the following parts under the general title Industrial automation systems and
integration - Product data representation and exchange:
— Part 1, Overview and fundamental principles;
— Part 11, Description methods: The EXPRESS language reference manual;
— Part 12, Description method: The EXPRESS-I language reference manual;
— Part 21, Implementation methods: Clear text encoding of the exchange structure;
— Part 22, Implementation method: Standard data access interface specification;
— Part 23, Implementation method: C++ language binding to the standard data access interface;
— Part 24, Implementation method: C language binding to the standard data access interface;
— Part 26, Implementation method: Interface definition language binding to the standard data
access;
— Part 31, Conformance testing methodology and framework: General concepts;
— Part 32, Conformance testing methodology and framework: Requirements on testing laboratories
and clients;
— Part 34, Conformance testing methodology and framework: Abstract test methods;
— Part 35, Conformance testing methodology and framework: Abstract test methods for SDAI
implementations;
— Part 41, Integrated generic resources: Fundamentals of product description and support;
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ISO 10303-225:1999(E) ©ISO
— Part 42, Integrated generic resources: Geometric and topological representation;
— Part 43, Integrated generic resources: Representation structures;
— Part 44, Integrated generic resources: Product structure configuration;
— Part 45, Integrated generic resource: Materials;
— Part 46, Integrated generic resources: Visual presentation;
— Part 47, Integrated generic resource: Shape variation tolerances;
— Part 49, Integrated generic resource: Process structure and properties;
— Part 101, Integrated application resource: Draughting;
— Part 104, Integrated application resource: Finite element analysis;
— Part 105, Integrated application resource: Kinematics;
— Part 106, Integrated application resource: Building construction core model;
— Part 201, Application protocol: Explicit draughting;
— Part 202, Application protocol: Associative draughting;
— Part 203, Application protocol: Configuration controlled design;
— Part 204, Application protocol: Mechanical design using boundary representation;
— Part 205, Application protocol: Mechanical design using surface representation;
— Part 207, Application protocol: Sheet metal die planning and design;
— Part 208, Application protocol: Life cycle management - Change process;
— Part 209, Application protocol: Composite and metallic structural analysis and related design;
— Part 210, Application protocol: Electronic assembly, interconnet, and packaging design;
— Part 212, Application protocol: Electrotechnical design and installation
— Part 213, Application protocol: Numerical control process plans for machined parts;
— Part 214, Application protocol: Core data for automotive design;
— Part 215, Application protocol: Ship arrangement;
— Part 216, Application protocol: Ship moulded forms;
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ISO 10303-225:1999(E) ©ISO
— Part 312, Abstract test suite: Electrotechnical design and installation;
— Part 313, Abstract test suite: Numerical control process plans for machined parts;
— Part 314, Abstract test suite: Core data for automotive mechanical design;
— Part 315, Abstract test suite: Ship arrangement;
— Part 316, Abstract test suite: Ship moulded forms;
— Part 317, Abstract test suite: Ship piping;
— Part 318, Abstract test suite: Ship structures;
— Part 321, Abstract test suite: Functional data and their schematic representation for process plant;
— Part 322, Abstract test suite: Exchange of product data for composite structures;
— Part 323, Abstract test suite: Exchange of design and manufacturing product information for
casting parts;
— Part 324, Abstract test suite: Mechanical product definition for process plans using machining
features;
— Part 325, Abstract test suite: Building elements using explicit shape representation;
— Part 326, Abstract test suite: Ship mechanical systems;
— Part 327, Abstract test suite: Plant spatial configuration;
— Part 329, Abstract test suite: Exchange of design and manufacturing product information for
forged parts;
— Part 330, Abstract test suite: Building structural frame: Steelwork;
— Part 331, Abstract test suite: Process engineering data: Process design and process specification
of major equipment;
— Part 332, Abstract test suite: Technical data packaging core information and exchange;
— Part 501, Application interpreted construct: Edge-based wireframe;
— Part 502, Application interpreted construct: Shell-based wireframe;
— Part 503, Application interpreted construct: Geometrically bounded 2D wireframe;
— Part 504, Application interpreted construct: Draughting annotation;
— Part 505, Application interpreted construct: Drawing structure and administration;
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©ISO ISO 10303-225:1999(E)
— Part 506, Application interpreted construct: Draughting elements;
— Part 507, Application interpreted construct: Geometrically bounded surface;
— Part 508, Application interpreted construct: Non-manifold surface;
— Part 509, Application interpreted construct: Manifold surface;
— Part 510, Application interpreted construct: Geometrically bounded wireframe;
— Part 511, Application interpreted construct: Topologically bounded surface;
— Part 512, Application interpreted construct: Faceted boundary representation;
— Part 513, Application interpreted construct: Elementary boundary representation;
— Part 514, Application interpreted construct: Advanced boundary representation;
— Part 515, Application interpreted construct: Constructive solid geometry;
— Part 517, Application interpreted construct: Mechanical design geometric presentation;
— Part 518, Application interpreted construct: Mechanical design shaded representation.
The structure of this International Standard is described in ISO 10303-1. The numbering of the parts
of the International Standard reflects its structure:
— Parts 11 to 12 specify the description methods,
— Parts 21 to 26 specify the implementation methods,
— Parts 31 to 35 specify the conformance testing methodology and framework,
— Parts 41 to 49 specify the integrated generic resources,
— Parts 101 to 106 specify the integrated application resources,
— Parts 201 to 232 specify the application protocols,
— Parts 301 to 332 specify the abstract test suites, and
— Parts 501 to 518 specify the application interpreted constructs.
Should further parts be published, they will follow the same numbering pattern.
Annexes A, B, C, D, and E form a normative part of this part of ISO 10303. Annexes F, G, H, J, and
K are for information only.
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ISO 10303-225:1999(E) ©ISO
Introduction
ISO 10303 is an International Standard for the computer-interpretable representation and exchange of
product data. The objective is to provide a neutral mechanism capable of describing product data
throughout the life cycle of a product, independent from any particular system. The nature of this
description makes it suitable not only for neutral file exchange, but also as a basis for implementing
and sharing product databases and archiving.
This International Standard is organized as a series of parts, each published separately. The parts of
ISO 10303 fall into one of the following series: description methods, integrated resources, application
interpreted constructs, application protocols, abstract test suites, implementation methods, and
conformance testing. The series are described in ISO 10303-1. This part of ISO 10303 is a member
of the application protocol series.
This part of ISO 10303 specifies an application protocol (AP) for the exchange of building element
shape, property, and spatial configuration information between architecture, engineering, and
construction (AEC) application systems and related systems using explicit three-dimensional shape
representations.
Many different institutions are engaged in the design, erection, management, and maintenance of
buildings and constructions. As these institutions shift toward the increased application of three-
dimensional Computer-Aided Design (CAD) modelling systems, data exchange is of crucial importance
for all participants in the design and construction process. A fundamental component of the data
exchange is the shape and arrangement of the elements of which a building is composed. This part of
ISO 10303 specifies a standard which allows the exchange of this data between systems.
Figure 1 contains the data planning model that provides a high level description of the requirements
for this application protocol, as well as the relationships between the basic data components.
The planning model illustrates that a building complex consists of buildings and a site shape; a
building consists of building sections; and a building section is composed of building items. Each
building item is composed of shape component that may be explicitly represented by a faceted, an
elementary, or an advanced shape. A faceted shape consists of lines and planes. An elementary shape
consists of lines, planes, circles, ellipses, hyperbolas, parabolas, b-spline curves, cylindrical surfaces,
conical surfaces, toroidal surfaces, and spherical surfaces. An advanced shape can consist of any kind
of curve or surface defined in ISO 10303-42. Figure2 illustrates the nested relationship between these
shapes; the elements that compose a faceted shape are a subset of those that compose an elementary
shape, and the elements that compose an elementary shape are a subset of those that compose an
advanced shape. Both building elements and shape components can be further described by properties
and classifications.
This AP does not address functional or performance characteristics of building systems or the
information required for design analysis such as structural or thermal analysis.
This application protocol defines the context, scope, and information requirements for the exchange
of building elements using explicit shape representation and specifies the integrated resources
necessary to satisfy these requirements.
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©ISO ISO 10303-225:1999(E)
Building Site shape
complex representation
Properties and
Change and
classifications
approval
Building
Building Shape
Building
section component
item
Explicit
shape
representation
Faceted
Elementary Advanced
shape shape
shape
Figure 1 - Data planning model
Application protocols provide the basis for developing implementations of ISO 10303 and abstract test
suites for the conformance testing of AP implementations.
Clause 1 defines the scope of the application protocol and summarizes the functionality and data
covered by the AP. Clause 3 lists the words defined in this part of ISO 10303 and gives pointers to
word defined elsewhere. An application activity model that is the basis for the definition of the scope
is provided in annex F. The information requirements of the application are specified in clause4 using
terminology appropriate to the application.A graphical representation of the information requirements,
referred to as the application reference model, is given in annex G.
Resource constructs are interpreted to meet the information requirements. This interpretation produces
the application interpreted model (AIM). This interpretation, given in 5.1, shows the correspondence
between the information requirements and the AIM. The short listing of the AIM specifies the interface
to the integrated resources and is given in 5.2. Note that the definitions and EXPRESS provided in
the integrated resources for constructs used in the AIM may include select list items and subtypes
which are not imported into the AIM. The expanded listing given in annex A contains the complete
EXPRESS for the AIM without annotation. A graphical representation of the AIM is given in annex
H. Additional requirements for specific implementation methods are given in annex C.
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ISO 10303-225:1999(E) ©ISO
Advanced Shapes
Elementary Shapes
Faceted Shapes
Figure 2 - Nested relationship of shape representation functionality
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INTERNATIONAL STANDARD ©ISO ISO 10303-225:1999(E)
Industrial automation systems and integration —
Product data representation and exchange —
Part 225:
Application protocol: Building elements using explicit shape
representation
1 Scope
This part of ISO 10303 specifies the use of the integrated resources necessary for the scope and
information requirements for the exchange of building element shape, property, and spatial
configuration information between application systems with explicit shape representations. Building
elements are those physical things of which a building is composed, such as structural elements,
enclosing and separating elements, service elements, fixtures and equipment, and spaces.
NOTE 1 - See 3.3.1.3 for definitions of these terms and concepts.
Building element shape, property, and spatial configuration information requirements can be used at
all stages of the life cycle of a building, including the design process, construction, and maintenance.
Building element shape, property, and spatial configuration information requirements specified in this
part of ISO 10303 support the following activities:
— concurrent design processes or building design iterations;
— integration of building structure designs with building systems designs to enable design analysis;
— building design visualization;
— specifications for construction and maintenance;
— analysis and review.
NOTE 2 - "Support" of these activities does not imply satisfaction. Satisfaction of the information
requirements for construction, for example, would require a complete building design. This part of ISO
10303 only satisfies a portion of information requirements for this activity. See 3.3.1.1.
EXAMPLE 1 - A design analysis function combines the building structure design with building service
systems designs (for systems such as heating, ventilation, and air condition (HVAC) and piping) to check
for interferences of the structural elements with piping and air conditioning elements.
NOTE 3 - The application activity model in annex F provides a graphical representation of the processes
and information flows that are the basis for the definition of the scope of this part of ISO 10303.
1

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ISO 10303-225:1999(E) ©ISO
The following are within the scope of this part of ISO 10303:
— explicit representation of the three-dimensional shape of building elements using boundary
representation (B-rep) solid models, swept solid models, or constructive solid geometry (CSG)
models.
— the spatial configuration of building elements that comprise the assembled building;
— building structures that represent physically distinct buildings that are part of a single building
complex;
— non-structural elements that enclose a building or separate areas within a building;
— the shape and arrangement of equipment and service elements that provide services to a
building;
EXAMPLE 2 - Service elements include items such as plumbing, ductwork, and conduits. Equipment
includes items such as compressors, furnaces, or water heaters.
— the shape and arrangement of fixtures in a building;
EXAMPLE 3 - Fixtures include items such as furniture and installed items like doorknobs.
— specification of spaces and levels;
EXAMPLE 4 - Spaces include rooms, accesses, and hallways. Levels include concepts such as floors and
mezzanines of a building.
— the shape of the site on which the building will be erected;
— specification of properties of building elements, including material composition;
— specification of classification information;
EXAMPLE 5 - Elements may be classified for reasons which include cost analysis, acoustics, or safety.
— association of properties and classification information to building elements;
— changes to building element shape, property, and spatial configuration information;
— association of approvals with building element shape, property, and spatial configuration
information;
— as-built record of the building.
The following are outside the scope of this part of ISO 10303:
— 2D shape representation and draughting presentation;
2

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©ISO ISO 10303-225:1999(E)
— the contents of building standards;
— implicit representation of building elements through selection of standard parameters;
— structural analysis of building structures, including loads, connections, and material properties
required for analysis;
— thermal analysis of buildings;
— the assembly process, joining methods, and detailed connectivity of building elements;
— building maintenance history, requirements, and instructions;
— approval, revision, versioning, and design change histories;
— building elements without explicit shape representation;
— bills of quantities.
NOTE4-In industries other than AEC, bills of quantities are often referred to as bills of material.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions
of this part of ISO 10303. At the time of publication, the editions indicated were valid. All standards
are subject to revision, and parties to agreements based on this part of ISO 10303 are encouraged to
investigate the possibility of applying the most recent editions of the standards indicated below.
Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 8824-1:1994 Information technology - Open systems interconnection - Abstract syntax notation
one (ASN.1) - Part 1: Specification of basic notation.
ISO 10303-1:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 1: Overview and fundamental principles.
ISO 10303-11:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 11: Description methods: The EXPRESS language reference manual.
ISO 10303-21:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 21: Implementation methods: Clear text encoding of the exchange structure.
ISO 10303-31:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 31: Conformance testing methodology and framework: General concepts.
ISO 10303-41:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 41: Integrated generic resources: Fundamentals of product description and support.
3

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ISO 10303-225:1999(E) ©ISO
ISO 10303-42:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 42: Integrated generic resources: Geometric and topological representation.
ISO 10303-43:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 43: Integrated generic resources: Representation structures.
ISO 10303-44:1994, Industrial automation systems and integration - Product data representation and
exchange - Part 44: Integrated generic resources: Product structure configuration.
ISO 10303-45:1998, Industrial automation systems and integration - Product data representation and
exchange - Part 45: Integrated generic resources: Materials.
3 Definitions and abbreviations
3.1 Terms defined in ISO 10303-1
This part of ISO 10303 makes use of the following terms defined in ISO 10303-1:
— application;
— application activity model (AAM);
— application interpreted model (AIM);
— application object;
— application protocol (AP);
— application reference model (ARM);
— conformance testing;
— implementation method;
— integrated resource;
— PICS proforma;
— product;
— product data;
— unit of functionality (UoF).
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©ISO ISO 10303-225:1999(E)
3.2 Terms defined in ISO 10303-31
This part of ISO 10303 makes use of the following terms defined in ISO 10303-31:
— abstract test suite (ATS);
— conformance class;
— implementation under test (IUT);
— protocol information and conformance statement (PICS).
3.3 Other definitions
For the purposes of this part of ISO 10303, the following definitions apply.
3.3.1 building design: the information that constitutes a specification sufficient for the evaluation,
construction, and maintenance of a building.
3.3.2 building component: named features that represent functional characteristics of the building
element.
EXAMPLE6-A beam may be composed of additive components such as a shaft and brackets and
negative subtractive components such as notches. The components are treated as independent items for
design changes and manipulation, such as for moving the notch on the beam.
3.3.3 enclosing and separating elements: physical, non-structural building elements. Enclosing
elements are attached to the exterior of a building for weather protection or appearance. Separating
elements divide interior spaces creating compartmentation of the structure.
NOTE - Structural elements may serve enclosing or separating functions. Enclosing and separating elements
are distinguished by the fact that they do not carry loads. Enclosing elements may also serve separating
functions
...

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