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Cities, People, Publications, Sustainable Development, Urban Planning, Weekly Roundup

Weekly Roundup 100 – 21st to 27th January


UDC Weekly roundup‘Comparison of building modelling assumptions and methods for urban scale heat demand forecasting’
Authored by Dirk Monien and Aneta Strzalka1

Building energy evaluation tools available today are only able to effectively analyze individual buildings and usually either they require a high amount of input data or they are too imprecise in energy predictions at a city (district)scale because of too many assumptions made. In this paper, two tools based on 3D models are compared to see whether there is an approach that would probably be able to fit both – the amount of data available and the
number of assumptions made.A case study in the German town of Essen was chosen in the framework of the research project WeBest, where six building types representing the most important building periods were analyzed. The urban simulation tool SimStadt, an in-house development of HFT Stuttgart, based on 3D urban geometry, is used to calculate the heat demand for both single building scale and city district scale. The individual building typology results are compared with the commercial dynamic building simulation software TRNSYS.

Read the whole piece here.

Published by Future Cities and Environment.


‘Landscape and Urban Planning 159 (2017) 62–75’
Published by ELSEVIER

<img class=" untitled alignleft” src=”https://urbandesigncollective.files.wordpress.com/2017/01/udc_22_1.jpg?w=212&#8243; alt=”udc_22_1″ width=”250″ height=”354″ />
Cities are expanding green infrastructure to enhance resilience and ecosystem services.Although green infrastructure is promoted for its multifunctionality, projects are typically sited based on a particular benefit, such as stormwater abatement, rather than a suite of socio-economic and environmental benefits. This stems in part from the lack of stakeholder-informed, city-scale approaches to systematically identify ecosystem service tradeoffs, synergies, and ‘hotspots’ associated with green infrastructure and its siting. To address this gap, we introduce the Green Infrastructure Spatial Planning (GISP) model, a GIS-based multi-criteria approach that integrates six benefits: 1) stormwater management; 2) social vulnerability; 3) green space; 4) air quality; 5) urban heat island amelioration; and 6) landscape connectivity. Stakeholders then weight priorities to identify hotspots where green infrastructure benefits are needed most. Applying the GISP model to Detroit, we compared the results with the locations of current green infrastructure projects. The analysis provides initial evidence that green infrastructure is not being sited in high priority areas for stormwater abatement, let alone for ameliorating urban heat island effects, improving air quality, or increasing habitat connectivity. However, as the Detroit GISP model reveals, it could be developed in locations that simultaneously abate stormwater, urban heat island, and air pollution. Tradeoffs exist between siting to maximize stormwater management versus landscape connectivity. The GISP model provides an inclusive, replicable approach for planning future green infrastructure so that it maximizes social and ecological resilience. More broadly, it represents a spatial planning approach for evaluating competing and complementary ecosystem service priorities for a particular landscape.
Read the publication here.


Created by TEDtalk

Opposite to the ‘top down’ concept of urban design is BETTER BLOCK, founded in Dallas’ Oak Cliff by Jason Roberts and Andrew Howard. The Better Block project is a demonstration tool that temporarily re-visions an area to show the potential to create a walkable, vibrant, neighborhood center. The idea and the charrettes to realize it have quickly spread to cities like Memphis, St. Louis, New York, and Boston. National media coverage includes NPR, the Washington Post, and the New York Times.


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