Annex E Examples - ProjectSetup_1

Example overview

Intent

This scenario encapsulates the model set up with correct units and project context. - It sets the units of the project to SI or conversion based units. - It contains a project "Boilerplate" with GUID=2DAvEupIz0HQr73cMaawtY that establishes the bare minimum of an IFC file exchange. - It establishes one geometric context for geometries.

Prerequisites

This scenario builds upon following other scenarios: - none

Content

This scenario covers the following concepts and/or IFC entities: - project context - IfcProject - geometric context - IfcGeometricRepresentationContext - default unit assignment - IfcUnitAssignment - IfcUnit - IfcSIUnit - IfcConversionBasedUnit - IfcMonetaryUnit - IfcMeasureWithUnit

Supporting files

Following files correspond to this scenario:

Filename	Description
UT_ModelSetup_1.ifc	the IFC document

Additional explanation

This UT establishes the bare minimum of IFC content within an IFC file. There are no products, geometries, properties or anything inside. The main purpose is to have a basis for all UT, where this boilerplate content will be included, but not explained in detail.

Images

IFC-SPF source

ISO-10303-21;

/* ------- This file was produced manually for IFC Infra Extension Deployment project. --------- */
/* ------- The file should come with a README.md with supplementing info. ---------------------- */
/* ------- Stefan Jaud, stefan.jaud@tum.de, 2020.07.15. ---------------------------------------- */

HEADER;
FILE_DESCRIPTION (('ViewDefinition []'), '2;1');
FILE_NAME ('UT_ProjectSetup_1.ifc', '2020-07-15T18:00:00', ('Stefan Jaud'), ('bSI Infra Extension Deployment project'), 'manual text editing', 'SublimeText 3.0', 'GitHub pull request');
FILE_SCHEMA (('IFC4X3_RC1'));
ENDSEC;

DATA;

/* ------- General definitions ----------------------------------------------------------------- */
#1 = IFCDIMENSIONALEXPONENTS(0, 0, 0, 0, 0, 0, 0);
/* ------- Reusable X direction ---------------------------------------------------------------- */
#2 = IFCDIRECTION((1., 0., 0.));
/* ------- Reusable Y direction ---------------------------------------------------------------- */
#3 = IFCDIRECTION((0., 1., 0.));
/* ------- Reusable Z direction ---------------------------------------------------------------- */
#4 = IFCDIRECTION((0., 0., 1.));
/* ------- Reusable origin --------------------------------------------------------------------- */
#5 = IFCCARTESIANPOINT((0., 0., 0.));

/* ------- IfcProject is the top most element in the project structure ------------------------- */
#16 = IFCPROJECT('2DAvEupIz0HQr73cMaawtY', $, 'BoilerPlate', 'The bare minimum of an IFC file exchange with no content, only boilerplate code.', $, $, $, (#28), #17);

/* ------- IfcUnitAssignment defines the global units for measures and values ------------------ */
/* ------- when the units are not otherwise defined -------------------------------------------- */
#17 = IFCUNITASSIGNMENT((#18, #19, #20, #24, #25, #26, #27));
#18 = IFCSIUNIT(*, .LENGTHUNIT., $, .METRE.);
#19 = IFCSIUNIT(*, .AREAUNIT., $, .SQUARE_METRE.);
#20 = IFCSIUNIT(*, .VOLUMEUNIT., $, .CUBIC_METRE.);

/* ------- Example of non-SI unit used for angles: degree instead of radian -------------------- */
#22 = IFCSIUNIT(*, .PLANEANGLEUNIT., $, .RADIAN.);
#23 = IFCMEASUREWITHUNIT(IFCPLANEANGLEMEASURE(0.017453292519943295), #22);
#24 = IFCCONVERSIONBASEDUNIT(#1, .PLANEANGLEUNIT., 'degree', #23);

#25 = IFCSIUNIT(*, .MASSUNIT., .KILO., .GRAM.);
#26 = IFCSIUNIT(*, .TIMEUNIT., $, .SECOND.);
#27 = IFCMONETARYUNIT('EUR');

/* ------- IfcGeometricRepresentationContext is the global context of the geometry ------------- */
#28 = IFCGEOMETRICREPRESENTATIONCONTEXT($, 'Model', 3, 1.E-6, #29, #3);
#29 = IFCAXIS2PLACEMENT3D(#5, #4, #2);

ENDSEC;
END-ISO-10303-21;