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CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
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_id	ddssar0203
id	ddssar0203
authors	Alkass, Sabah and Jrade, Ahmad
year	2002
title	A Web-Based Virtual Reality Model for Preliminary Estimates of Hi-Rise Building Projects
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary	Cost estimating of a construction project at its early stage is considered to be very important task since it will be used as a base to commit or otherwise not to commit funds to that project. Preparation of a reliableand realistic preliminary estimate to aid the decision makers to commit funds for a specific project is a complicated assignment. Traditional methods and operations produced unsatisfactory aid due to lack ofaccuracy especially in the pre-design stage of a project. This participates in the increase of percentage of bankruptcy in the construction industry, which has dramatically climbed up and ranked as 15 percent of thewhole bankruptcies claimed in Canada (Statistic Canada 1998). This paper presents a methodology for developing and a Web-based model to automate preliminary cost estimates for hi-rise buildings. This is achieved by integrating a database with design drawings in a Virtual Reality (VR) environment. The model will automatically generate preliminary estimates after modifying a 3D CAD drawing. It provides the user the option to visualize and simulate the drawing and its cost data through VR environment. Having done that, it will allow owners, architects and cost engineers to view a constructed building project, change its geometric objects and shapes, and accordingly generate a new conceptual cost estimate.
series	DDSS
last changed	2003/11/21 15:15

_id	5764
authors	Stouffs, R. and Krishnamurti, R.
year	1996
title	On a query language for weighted geometries
source	O. Moselhi, C. Bedard and S. Alkass (eds.), Third Canadian Conference on Computing in Civil and Building Engineering, Canadian Society for Civil Engineering, Montreal, pp. 783–793
summary	Computational design relies on effective models of geometry, for the creation of (geometries of) design artifacts and the querying of the characteristics of these (geometries). In the search for appropriate solid models, there is a consensus - namely, a solid model has to be complete - that is, the corresponding representations are "adequate for answering arbitrary geometric questions algorithmically''. However, this statement becomes more difficult to qualify as users and, in particular, designers pose new questions that go beyond geometry and require other information to be included. Current CAD systems tend to focus on the representation of design artifacts, and on the tools and operations for the creation and manipulation of these representations. Techniques for querying are mostly added as afterthoughts, constrained by the data representation system and methods. Yet, querying a design is as much an intricate aspect of the design process as is the creation or manipulation thereof. In this paper, we explore the foundation of a query language that allows for a rich body of queries, using both geometric and non-geometric data, and incorporating spatial rules as a syntactical expression for pattern matching on geometries.
series	other
email
last changed	2003/04/23 15:50

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