1. Towards an integrated design environment for architectural design Prof. Dr. Herman Neuckermans and Dr. Ann Hendricx Dept. of Architecture, Urban Design and Planning K.U.Leuven University, Belgium

2. Design Futures Seminar ° Eindhoven 22/11/2000 2 Overview CADLAB K.U.Leuven University about architectural design a conceptual system for CAAD Design methodology and CAAD CADLAB activities the IDEA+ research project core model: starting points and desiderata methodology and presentation current research status

3. Design Futures Seminar ° Eindhoven 22/11/2000 3 CADLAB K.U.Leuven From drafting tool to design system Numerics and logic Characters Graphics Design research area

4. Design Futures Seminar ° Eindhoven 22/11/2000 4 Design >< Problem solving ‘wicked’ problems ‘tame’ problems Original‘known’ Ill-definedsystematic Problem definitionoptimisation // problem solutionstep by step variable(s,pd,ga,sp,es,d,i,f) rational + irrationalrational uncertain

5. Design Futures Seminar ° Eindhoven 22/11/2000 5 Design Most important decisions in early stages of design Not one best design method Open design system

6. Design Futures Seminar ° Eindhoven 22/11/2000 6 Sketch Design Conceptual solution for –Formal issues –Layout –Construction –Equipment

7. Design Futures Seminar ° Eindhoven 22/11/2000 7 Conceptual system for CAAD in the sketch design phase Physical levels: each can be entry point Grids: hierarchical 10/30/60/90 Tests: in development >< post-design appraisal

8. Design Futures Seminar ° Eindhoven 22/11/2000 8 Conceptual system for CAAD in the sketch design phase

9. Design Futures Seminar ° Eindhoven 22/11/2000 9 CADLAB Didactics Conceptual model Object modelling for IDEA+ Case-based design Integrated testing: daylight, sunshine, shading Documentation and visualisation of archeological sites

10. Design Futures Seminar ° Eindhoven 22/11/2000 10 Historical reconstruction of Leuven Thesis work 00-01: sunshading intelligent zoom / objects detailing:2D/3D animation + test visual keys for CBD CADLAB (2)

11. Design Futures Seminar ° Eindhoven 22/11/2000 11 The IDEA+ research project Aim: an Integrated Design Environment for Architect designers. Research topics include: A central building model Software tools using the central model A swift data management system

12. Design Futures Seminar ° Eindhoven 22/11/2000 12 The IDEA+ research project modelling tools evaluation tools building partnersarchitectural cases digital model architect designer integrated environment

13. Design Futures Seminar ° Eindhoven 22/11/2000 13 Product modelling Product modelling: ‘The use of computers to represent the designer’s (or designers’) evolving idea of an artefact of design during the design process’ (Galle 1998) architect ownercontractorsengineersinhabitants town planning office

14. Design Futures Seminar ° Eindhoven 22/11/2000 14 = fit the model in a workable design environment = a static description of the architectural and geometrical objects capable of describing architectural design objects + ensuring the possibility of evolution and modelling (complex) behaviour + model the communication between the model and the surrounding tools Product modelling

15. Design Futures Seminar ° Eindhoven 22/11/2000 15 The core object model: Starting points and desiderata premises: –pursue qualitative architecture –support the early design phases –allow different design approaches –respect the evolutionary nature of design –ensure the core model’s neutral position case studies, test implementations methodological approach - MERODE

16. Design Futures Seminar ° Eindhoven 22/11/2000 16 Hogenheuvelcollege - Leuven Paul Van Aerschot / Poponcini & Lootens

17. Design Futures Seminar ° Eindhoven 22/11/2000 17 The MERODE methodology Model-driven Existence-dependency Relationship Object-oriented Development conceptual modelling: distinction between specification and implementation model driven development  distinction between enterprise objects and functionality objects

18. Design Futures Seminar ° Eindhoven 22/11/2000 18 Resulting model: objects describing the partitioning parts of an architectural project (basic behaviour included in an object’s methods) + objects describing all kinds of functionality i.e. operations on and interactions between the partitioning parts a core object model for architectural design

19. Design Futures Seminar ° Eindhoven 22/11/2000 19 Stepwise development of the core object model 1. enterprise model enterprise objects and events static relationships between the enterprise objects object-event table elaborated class definitions: attributes, contraints, functions methods layer atomic events layer functionality layer user interface implementation strategy for an OO environment 2. functionality model

20. Design Futures Seminar ° Eindhoven 22/11/2000 20 MERODE and the conceptual framework enterprise submodel functio- nality submodel integrated design environment

21. Design Futures Seminar ° Eindhoven 22/11/2000 21 Enterprise objects 1. generic principle layer 3. specialisation or library layer 2. architectural aspects layer enterpise objects project model instantiation

22. Design Futures Seminar ° Eindhoven 22/11/2000 22 1. Generic principle layer General principles, for instance: PROJECT ELEMENT CAAD ENTITY GRAPHICAL ENTITY staircase 1. stair 2. banisters 1 2 3 4 5

23. Design Futures Seminar ° Eindhoven 22/11/2000 23 2. Architectural aspects layer CAAD ENTITY: PHYSICAL ELEMENT, SPACE, USER ACTIVITY, GRID … and related objects bathroom bedroom dining room day area night area

24. Design Futures Seminar ° Eindhoven 22/11/2000 24 2. Architectural aspects layer PHYSICAL ELEMENT TYPE COMPOSITION PHYSICAL ELEMENT information independent from typological information typological information PHYSICAL ELEMENT TYPE typological information independent from composition composition information PHYSICAL ELEMENT COMPOSITION composition information “kitchen wall” cavity wall 14/7/9 wall with overall thickness 30 cm unraveling physical elements to enhance their capability of change:

25. Design Futures Seminar ° Eindhoven 22/11/2000 25 3. Specialisation or library layer Specialisations of objects defined in the generic principle or architectural aspects layer e.g.GRAPHICAL ENTITY PHYSICAL ELEMENT TYPE PHYSICAL ELEMENT TYPE TERRAIN PRIMARY ELEMENT SECONDARY ELEMENT HVAC ELEMENT INTERIOR DESIGN ELEMENT FOUNDATION PLANAR ELEMENT SKELETON ELEMENT STAIRS WALL ROOF FLOOR OPENING ELEMENT...

26. Design Futures Seminar ° Eindhoven 22/11/2000 26 Setting relationships  Simplified E-R scheme generic principle layer architectural aspects layer

27. Design Futures Seminar ° Eindhoven 22/11/2000 27 A catalogue of object class definitions 1. enterprise model enterprise objects and events static relationships between the enterprise objects object-event table elaborated class definitions: attributes, constraints, functions methods layer atomic events layer functionality layer user interface 2. functionality model

28. Design Futures Seminar ° Eindhoven 22/11/2000 28... relation with other object classes attributes and constraints object methods A catalogue of object class definitions

29. Design Futures Seminar ° Eindhoven 22/11/2000 29 Hogenheuvelcollege case study core objects and relationships in relational database entrance forms relation- ships tables

30. Design Futures Seminar ° Eindhoven 22/11/2000 30 modelling in several phases: masterplan - physical elements - spaces - user activities Hogenheuvelcollege case study

31. Design Futures Seminar ° Eindhoven 22/11/2000 31 modelling in several phases: masterplan - physical elements - spaces - user activities Hogenheuvelcollege case study

32. Design Futures Seminar ° Eindhoven 22/11/2000 32 modelling in several phases: masterplan - physical elements - spaces - user activities building rooms subspaces floors vertical circulation letter box corner Hogenheuvelcollege case study

33. Design Futures Seminar ° Eindhoven 22/11/2000 33 The functionality model 1. enterprise model enterprise objects and events static relationships between the enterprise objects object-event table elaborated class definitions: attributes, contraints, functions methods layer atomic events layer functionality layer user interface 2. functionality model implementation strategy for an OO environment

34. Design Futures Seminar ° Eindhoven 22/11/2000 34 modelling tools evaluation tools building partnersarchitectural cases digital model architect designer integrated environmententerprise model functionality model class definitions The functionality model

35. Design Futures Seminar ° Eindhoven 22/11/2000 35 Layering functionality User Interface Functionality Layer Atomic Event Layer Methods Layer complex workflows input output services tasks consistent events event broadcast core object model higher functionality

36. Design Futures Seminar ° Eindhoven 22/11/2000 36 Class definitions of functionality objects Class TRANSFORM-ENTITY Attributes -- references to participating object types: … -- additional attributes: … Methods initiate_transform_entity (Input_graphical_entity: GRAPHICAL-ENTITY) is... check_validity is... run is... -- Different options: if solitary graphical-entity: perform transform operation on graphical-entity else: define caad-entity and all connected caad-entities (via dependence-link, mandatory boundary-link) if physical-element: perform operation on physical-element-type else: perform operation on caad-entity The transform operation is conducted on the appropriate graphical-primitive, after which the geometry_topology attribute is set in accordance with the new situation. This setting triggers the VISUALIZE service. class definition of Input output service TRANSFORM-ENTITY

37. Design Futures Seminar ° Eindhoven 22/11/2000 37 Final state machine Service Specification Diagram Class definitions of functionality objects

38. Design Futures Seminar ° Eindhoven 22/11/2000 38 The IDEA+ research project Future: elaboration and implementation of the functionality required for the IDEA- l design tool Elaborated description of the enterprise objects and events Testing on actual design cases Example elaboration of the functionality model Development and prototype implementation of a geometrical modeller and the IDEA- l design tool for natural lighting

39. Design Futures Seminar ° Eindhoven 22/11/2000 39 Current research activities at the CADLAB: core object model sunshading visual keys evaluation tools building partners architectural cases digital model architect designer integrated environment modelling tools architectural details- builder 2D-3D Intelligent objects Idea-l : daylighting tool Dynamo: architectural database on-line

40. Design Futures Seminar ° Eindhoven 22/11/2000 40 Thank you for your attention!

41. Design Futures Seminar ° Eindhoven 22/11/2000 41 DESIGN METHODOLOGY & CAAD PART 1 Design theory: epistemology of design design activity design process programming structuring info coping with complexity sketch design generation of ideas selection of solutions

42. Design Futures Seminar ° Eindhoven 22/11/2000 42 DESIGN METHODOLOGY & CAAD PART 2 Design methods: a critical study notation methods decomposition patterns masterplanning morphological box brainstorming synectics

43. Design Futures Seminar ° Eindhoven 22/11/2000 43 DESIGN METHODOLOGY & CAAD PART 3 History of HW / SW / CAAD HW & SW for CAAD Modeling: conceptual physical Application: actual prospective