Product Library and ISO 16757

Transcription

1 Product Library and ISO Wolfgang Wilkes Bjørn Stangeland Manfred Pikart 1

2 Building information modelling and catalogues Building Owner s Data : Requirements, Restrictions... Manufacturer s Data: Product catalogues Architect s Data: Walls, Floors, Ceilings, Doors, Windows, Roofs Building Services Designer's Data: Pipes, Fittings, Heaters, Radiators, Valves, Air-Outlets Constructor s Data: Openings, Hangings, Flanges FM Data: Cleaning Areas, Maintenance intervals, Spare parts Building Information Model (BIM) IFC Archives, Documentation 2

3 Product Library Means to collect product specifications to be used in BIM applications Uses IFC as its underlying model Products representation and building representation use the same mechanisms Supports static descriptions of products No configuration mechanism No parametric geometry 3

4 ISO Supports the definition of product catalogues by manufacturers / distributors Products can be collected explicitly (like in product library) Products can be described implicitly by means of configuration rules (captured in a configuration function) Supports dynamic properties with dynamic values, provided by the system into which the product is installed Supports parametric geometry Supports additional geometric primitives (not available in IFC) 4

5 Why do we work together? ISO properties and structures will be mapped to IFC To allow transfer of product data from catalogues into building information models ISO and VDI 3805 catalogues get a wider distribution Product libraries are populated with product data IFC needs additional features to represent technical information about building services products Mapping triggers awareness about shortcomings in IFC and attempts to find solutions Both parties profit from the cooperation 5

6 Levels of data transfer from ISO to product libraries Transfer of static products Static properties and fixed geometries Parametric description resides only in ISO catalogue Dynamic properties are not transferred Addition of dynamic properties Required IFC capabilities: Place for storing the function code of the dynamic property Capture the relationship of the dynamic property to its determining system properties (describing the actual state of the system) 6

7 Levels of data transfer from ISO to product libraries Addition of geometric primitives of ISO Provided in ISO Used for many building services products Required: Extension of IFC geometric primitives 7

8 Another option: Combination of systems Product Library deals with static properties To get situation-specific values of dynamic properties, call an ISO CatalogManagementSystem API function which produces the value Product Library API ISO CatMS 8

9 First steps Mapping of ISO properties to IFC properties Three possible cases: Property exists in ISO and in IFC: Mapping Property exists in ISO and not in IFC: Add it to a new PSet Property exists in IFC and not in ISO 16757: Add it to ISO Ongoing effort, to be done per product group Examination of possibilities to store dynamic properties in IFC Relationship between property and system context Storage of function code in IFC 9

10 ISO 16757: Static properties I IFC static properties Type ifcairterminaltype Construction type ifcairterminaltypeenum Frame shape ifcairterminalfaceshape Air type (In-, Out-) ifcflowtype Nominal length Nominal width Nominal height Nominal diameter Length SlotLength Width SlotWidth Height SlotHeight Mass SlotDiameter Surface Finish Type Color Finish Colour 10

11 ISO 16757: System properties I Room air temperature - Medium air pressure - Medium air temperature - Medium air volume flow - Distance between two terminals - direction A Distance between two terminals - direction B orthographic to A Distance between grid bands - Required jet path length - Distance between ceiling and room - occupied zone Flap setting angle - Water volume flow - Water supply temperature - IFC static properties 11

12 ISO 16757: Dynamic properties I Acoustic power spectrum (NC) Octave acoustic power level Octave sound dissipation Pressure loss, water Cooling/Heating power output, water Cooling/Heating power output, air Water return temperatur Water volume flow Air quantity for air induction as function of jet path length IFC static properties AirDiffusionPerformanceIndex 12

13 Summary and conclusion ISO elements are being mapped to product library (IFC) ISO / VDI 3805 product catalogues can be transmitted into product libraries ISO / VDI 3805 catalogues can be further spread Product Library / IFC will be enabled to deal with dynamic properties IFC gets important capability to support technical applications 13