1.1.1 Design Templates

This exchange describes re-usable templates for bridge components which may be incorporated into models of specific bridges and used in downstream exchanges such as the Design Plans exchange described herein.

Tthis exchange may also be used to define tabular data formats to be used for plans and specifications making use of such templates. As conventions may vary with each agency, such translation is captured in an exchange, which allows for standardized presentation of bridge information to evolve independently of the underlying data. While from a pure information modeling perspective, formatting may be considered superfluous, it is foreseen as critical for parties transitioning between tabular formats in use today with all-digital formats. It defines standardized conventions for transforming model data into familiar formats.

Examples of such information may be found at the following links:

• http://www.iowadot.gov/design/tnt/PDFsandWebFiles/CurrentBook/eEntireBook.pdf

NOTE  This exchange currently provides minimal information to be useful for the downstream Design Plans exchange; it is anticipated to be elaborated in a future extension.

Design Templates
Entity/Concept	Attributes	Constraints	I	E
IfcBeamType
Material Profile Set	HasAssociations		O	O
IfcCableCarrierSegmentType
Material Profile Set	HasAssociations		R	R
Type Body SweptDisk Geometry	RepresentationMaps		O	O
IfcCivilElementType
Type Element Aggregation	PredefinedType IsDecomposedBy Decomposes	PredefinedType RelatedObjects Description   IfcPile Piles of piers and abutments   IfcFooting Footings of piers and abutments   IfcColumn Vertical segments of piers separated by construction joints   IfcMember Top segments of piers supporting bridge girder(s)	O	O
Type Axis Geometry	RepresentationMaps		O	O
IfcColumnType
Material Profile Set	HasAssociations		O	O
IfcCoveringType
Material Layer Set With Style	HasAssociations		O	O
IfcElementAssemblyType
Aggregation	PredefinedType IsDecomposedBy Decomposes	PredefinedType RelatedObjects Description   IfcMember Members within the assembly.   IfcPlate Plates within the assembly.   IfcElementComponent Components within the assembly.	O	O
IfcObject
Property Sets for Objects	PredefinedType IsDefinedBy		O	O
IfcPile
Object Typing	IsTypedBy PredefinedType	Type IfcPileType	O	O
Mapped Geometry	Representation		O	O
Pattern Geometry	Representation		O	O
IfcPlateType
Type Body SweptSolid Extruded Arbitrary Geometry	RepresentationMaps		O	O
Type Body SweptSolid Extruded Arbitrary Void Geometry	RepresentationMaps		O	O
IfcProject
Project Units	UnitsInContext Phase ObjectType LongName	DerivedUnitType Description Length unit as meters, millimeters, or inches.	R	R
Project Representation Context	RepresentationContexts Phase ObjectType LongName	ContextIdentifier ContextType Description Model 3D Context for all 3D geometry. Plan 2D Context for all 2D annotations.	R	R
Object Type Definitions	Declares Phase ObjectType LongName	Type Description IfcCivilElementType Templates of supporting structures including piers and abutments IfcSlabType Templates of bridge decks IfcBeamType Templates of bridge girders IfcMechanicalFastenerType Templates of bearings IfcElementAssemblyType Templates of cross-framing	R	R
IfcProjectLibrary
Project Declaration	Declares Phase ObjectType LongName		O	O
Project Units	UnitsInContext Phase ObjectType LongName		O	O
IfcRailingType
Material Profile Set	HasAssociations		O	O
Type Element Aggregation	PredefinedType IsDecomposedBy Decomposes	PredefinedType RelatedObjects Description   IfcMember Posts, rails, or spindles of explicit shape with optional explicit parametric constraints.   IfcMemberStandardCase Posts, rails, or spindles of implicit shape based on material profile.	O	O
IfcReinforcingBar
Pattern Geometry	Representation		O	O
IfcReinforcingBarType
Material Profile Set	HasAssociations		O	O
Type Body SweptDisk Geometry	RepresentationMaps		R	R
Constraint Association	HasAssociations		O	O
Reinforcing Bar Type Attributes	NominalDiameter CrossSectionArea BarLength BarSurface BendingShapeCode BendingParameters		R	R
IfcReinforcingMeshType
Type Element Aggregation	PredefinedType IsDecomposedBy Decomposes	PredefinedType RelatedObjects   IfcReinforcingBar	R	R
IfcRoot
Software Identity	GlobalId		R	R
User Identity	Name Description		O	O
Object Ownership	OwnerHistory		O	O
IfcTypeObject
Property Sets for Types	HasPropertySets		O	O