advanced building skins 14 | 15 June 2012 - lamp.tugraz.at - Graz ...
advanced building skins 14 | 15 June 2012 - lamp.tugraz.at - Graz ...
advanced building skins 14 | 15 June 2012 - lamp.tugraz.at - Graz ...
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Advanced Building Skins<br />
designers. Rigid structures may excuse unfavorable design through local strengthening measures. The<br />
sensibility of non-rigid, flexible, form-active structures in contrary is one of the main cost driving<br />
factors. Small adjustments and modific<strong>at</strong>ions on the design may significantly influence the total costs<br />
of the whole project.<br />
The more accuracy is required from cost estim<strong>at</strong>ions the higher its level of complexity gets. The<br />
number of parameters to be considered increases potentially. Every single factor’s potential cost<br />
impact has to be evalu<strong>at</strong>ed.<br />
At this point two types of parameters need to be distinguished; parameters able to be determined and<br />
such which only can be valued either by chance or by experience.<br />
Figure 1: Examples for determinable and indeterminable parameters for cost optimiz<strong>at</strong>ion<br />
Examples for "Determinable Factors"<br />
Determinable architectural design concept and intention<br />
(facts th<strong>at</strong> can be described by designers, e.g. by sketch, by reference projects or verbally)<br />
Geometry described with physical models or CAD tools and readability of the structure<br />
(e.g. four-point sail, ridge-valley sail, high-point sail, etc.)<br />
Construction components and details<br />
("element c<strong>at</strong>alogue", altern<strong>at</strong>ive solutions for every component, curv<strong>at</strong>ure of membrane, edge<br />
cables, m<strong>at</strong>erials)<br />
Economical, legal, and geographical limit<strong>at</strong>ions<br />
(available budget, <strong>building</strong> law; external loading like wind load, snow load, and dynamic<br />
excitability; general clim<strong>at</strong>e conditions like we<strong>at</strong>her, temper<strong>at</strong>ure, and local clim<strong>at</strong>e<br />
characteristics)<br />
Examples for "Indeterminable Factors"<br />
Indeterminable architectural perception and requirements th<strong>at</strong> are not part of the design<br />
concept<br />
(individual “design philosophy” of architect/designer)<br />
Special design intents<br />
(use of new m<strong>at</strong>erials or techniques, first of a kind-project)<br />
Feasibility of the structural concept<br />
Building site and infrastructure<br />
(construction site, accessibility of site, infrastructure, soil conditions)<br />
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