31 research outputs found
Towards a formal representation for description rules
No full textThis paper explores a generalized specification for descriptions and description rules, on the basis of an extensive overview of applications of description grammars in literature. The aim of this research is to establish a formal representation for description rules and the implementation of a grammar interpreter that supports the specification of description grammars, discursive grammars or, in general, shape grammars including textual descriptions.Architectural Engineering +TechnologyArchitecture and The Built Environmen
Implementing a Description Grammar Interpreter: A Notation for Descriptions and Description Rules
No full textDescription grammars represent a formalism for generating verbal descriptions of designs, used in conjunction with shape grammars. A description grammar constitutes a set of description rules that define a language of descriptions. A description grammar interpreter implements the mechanisms to interpret descriptions and description rules, apply description rules to descriptions to derive new descriptions, and generate the members of the corresponding language of descriptions. In this paper, we argue the need for the development of a (general) description grammar interpreter, offer a formal notation for descriptions and description rules, describe the representation and implementation of descriptions and description rules, and provide an example implemented using the description grammar interpreter.Architectural Engineering +TechnologyArchitecture and The Built Environmen
Description Grammars: An overview
No full textWe present an overview of seventeen different accounts of the application of description grammars (or description functions), characterizing them according to their role in the grammatical design generation process and according to their representational specification. The objective and intended use of this overview is twofold: firstly as a referential overview of past precedents; secondly as a foundation to develop a formal representation for descriptions and description grammars.Architectural Engineering +TechnologyArchitecture and The Built Environmen
Performance Assessment Strategies: A computational framework for conceptual design of large roofs
No full textUsing engineering performance evaluations to explore design alternatives during the conceptual phase of architectural design helps to understand the relationships between form and performance; and is crucial for developing well-performing final designs. Computer aided conceptual design has the potential to aid the design team in discovering and highlighting these relationships; especially by means of procedural and parametric geometry to support the generation of geometric design, and building performance simulation tools to support performance assessments. However, current tools and methods for computer aided conceptual design in architecture do not explicitly reveal nor allow for backtracking the relationships between performance and geometry of the design. They currently support post-engineering, rather than the early design decisions and the design exploration process.
Focusing on large roofs, this research aims at developing a computational design approach to support designers in performance driven explorations. The approach is meant to facilitate the multidisciplinary integration and the learning process of the designer; and not to constrain the process in precompiled procedures or in hard engineering formulations, nor to automatize it by delegating the design creativity to computational procedures. PAS (Performance Assessment Strategies) as a method is the main output of the research. It consists of a framework including guidelines and an extensible library of procedures for parametric modelling. It is structured on three parts.
Pre-PAS provides guidelines for a design strategy-definition, toward the parameterization process. Model-PAS provides guidelines, procedures and scripts for building the parametric models. Explore-PAS supports the solutions-assessment based on numeric evaluations and performance simulations, until the identification of a suitable design solution. PAS has been developed based on action research. Several case studies have focused on each step of PAS and on their interrelationships.
The relations between the knowledge available in pre-PAS and the challenges of the solution space exploration in explore-PAS have been highlighted. In order to facilitate the explore-PAS phase in case of large solution spaces, the support of genetic algorithms has been investigated and the exiting method ParaGen has been further implemented. Final case studies have focused on the potentials of ParaGen to identify well performing solutions; to extract knowledge during explore-PAS; and to allow interventions of the designer as an alternative to generations driven solely by coded criteria.
Both the use of PAS and its recommended future developments are addressed in the thesis
Intelligent Design Objects (IDO): A cognitive approach for performance-based design
No full textDesign is complex. This is because it involves conflicting goals that are often vague. Also, prior to the design it is generally not clear how important goals are relative to each other. And finally the amount of possible solutions is large in general. These bottlenecks are addressed in this thesis. A novel approach for design is proposed, where computation is used to reach most suitable solutions. The approach is based on a novel concept of the objects forming a design. This concept is termed intelligent design objects. Such objects exhibit intelligent behavior in the sense that they approach most desirable solutions for conflicting, vague goals put forward by a designer. That is, the objects know ‘themselves’ what to do to satisfy a designer’s goals. This is accomplished using methods from the domain of computational intelligence, as these are uniquely able to deal with the complexity of design mentioned above. The result from the approach is that designers and decision makers have great certainty about the satisfaction of their goals and are able to concentrate on second order aspects they were not aware of prior to the execution. The approach is implemented for two applications from the domain of architecture demonstrating its effectiveness. The thesis addresses to students, researchers and executives in the field of architecture, and other areas of design. It may be also interesting for researchers in the domain of computational intelligence, as it provides a formalism of intelligent design, and it exemplifies the use of these modern technologies in the design domain. Due to its generic nature, this formalism may have some significance in the development of the science of design.Building TechnologyArchitectur
Een bouwtechnisch ontwerp en een economische haalbaarheidsstudie voor een ondergrondse luchthaven pier
No full textHet verkrijgen van inzicht in de voorkeuren, efficiëntie en de economische haalbaarheid van een ondergrondse luchthaven pier door middel van een bouwtechnische ontwerp voorstel met een bijbehorend kosten en baten overzicht die de belangen van de luchthaveneigenaren, luchtvaartmaatschappijen en passagiers positief zal beïnvloeden. Het komen tot aanbevelingen en adviezen over hoe een mogelijke ontwerp scenario tot stand gebracht kan worden en in welke context deze ontwerp scenario uiteindelijk toegepast kan worden.Computation and PerformanceBuilding TechnologyArchitectur
Herbruikbaar wandsysteem
No full textEen herbruikbaar wandsysteem wat goed toepasbaar is in kantoren door snelle montage en uitschuifbaarheid.Computation and PerformanceBuilding TechnologyArchitectur
Self-supporting sandwich element for freeform building envelopes
No full textDesign for a custom CNC wire-cut sandwich element from EPS and fibre glass reinforced epoxy. Algoritmic model for generation of custom elements.computation and performance designBuilding TechnologyArchitectur
Multi-Perspective Urban Optioneering
No full textThis paper investigates the state-of-the-art with respect to simulation-based planning support systems in order to draw a set of requirements and best practices for an urban planning and design framework that enables multiple stakeholders with differing perspectives to systematically explore design options, leveraging the latest analysis and simulation techniques. From these requirements and best practices, the foundations and structure of such an urban planning and design framework are developed. A number of technological and methodological challenges are identified for future investigation.Architectural Engineering +TechnologyArchitecture and The Built Environmen
