VOLUME COMPARISON OF AUTOMATICALLY RECONSTRUCTED MULTI-LOD BUILDING MODELS FOR URBAN PLANNING APPLICATIONS

Abstract. 3D city models are playing a growing role worldwide as sources of integrated information upon which different urban applications are developed. In the context of urban planning and design, semantic 3D city models can provide plenty of qualitative and quantitative information about the urban context and of the area(s) to be transformed. This paper takes inspiration and continues a work recently published in which several design parameters and Key Performance Indicators are computed from a semantic 3D city model, and later used in a GIS-supported urban design process to develop a new area. As many of such parameters are derived from the gross volume of the building stock, this paper investigates whether and to which extent different building stock models might affect the estimation of the gross volume. The study is carried out in anticipation of the upcoming LoD2-based, country-wide model of the Netherlands that is being finalised by our team. At the same time, the paper investigates whether and which information can be obtained regarding the quality of the LoD2 model from a comparison with the LoD1 one, with a focus on volume calculation.

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LIFE CYCLE ASSESSMENT OF TECHNICAL BUILDING SERVICES OF LARGE RESIDENTIAL BUILDING STOCKS USING SEMANTIC 3D CITY MODELS

ISPRS Annals of Photogrammetry Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-annals-vi-4-w1-2020-85-2020 ◽

2020 ◽

Vol VI-4/W1-2020 ◽

pp. 85-92

Author(s):

H. Harter ◽

B. Willenborg ◽

W. Lang ◽

T. H. Kolbe

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Energy Demand ◽

Residential Buildings ◽

Residential Building ◽

Building Stock ◽

3D City Models ◽

Methodical Approach ◽

Operational Energy ◽

City Models

Abstract. Reducing the demand for non-renewable resources and the resulting environmental impact is an objective of sustainable development, to which buildings contribute significantly. In order to realize the goal of reaching a climate-neutral building stock, it must first be analyzed and evaluated in order to develop optimization strategies. The life cycle based consideration and assessment of buildings plays a key role in this process. Approaches and tools already exist for this purpose, but they mainly take the operational energy demand of buildings and not a life cycle based approach into account, especially when assessing technical building services (TBS). Therefore, this paper presents and applies a methodical approach for the life cycle based assessment of the TBS of large residential building stocks, based on semantic 3D city models (CityGML). The methodical approach developed for this purpose describes the procedure for calculating the operational energy demand (already validated) and the heating load of the building, the dimensioning of the TBS components and the calculation of the life cycle assessment. The application of the methodology is illustrated in a case study with over 115,000 residential buildings from Munich, Germany. The study shows that the methodology calculates reliable results and that a significant reduction of the life cycle based energy demand can be achieved by refurbishment measures/scenarios. Nevertheless, the goal of achieving a climate-neutral building stock is a challenge from a life cycle perspective.

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Automatic Generation of 3D Building Models with General Shaped Roofs for Sustainable Development

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.368-370.1855 ◽

2013 ◽

Vol 368-370 ◽

pp. 1855-1859 ◽

Cited By ~ 1

Author(s):

Kenichi Sugihara ◽

Zhen Jiang Shen

Keyword(s):

Sustainable Development ◽

Urban Planning ◽

3D Modeling ◽

Automatic Generation ◽

Integrated System ◽

Digital Maps ◽

3D City Models ◽

Building Models ◽

Modeling Software ◽

City Models

3D city models are important in urban planning for sustainable development. Usually and traditionally, urban planners design the future layout of the towns by drawing the maps, using GIS or CAD packages. 3D city models based on these maps are quite effective in understanding what if the plan is realized. However, creating 3D city models is labor intensive, using a 3D modeling software such as 3ds Max or SketchUp. In order to automate laborious steps, we are proposing a GIS and CG integrated system for automatically generating 3D building models with general shaped roofs by straight skeleton computation, based on general shaped building polygons (building footprints) on digital maps.

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Modelling, Validation and Quantification of Climate and Other Sensitivities of Building Energy Model on 3D City Models

ISPRS International Journal of Geo-Information ◽

10.3390/ijgi7110447 ◽

2018 ◽

Vol 7 (11) ◽

pp. 447 ◽

Cited By ~ 7

Author(s):

Syed Monjur Murshed ◽

Solène Picard ◽

Andreas Koch

Keyword(s):

Building Energy ◽

Simulation Software ◽

Energy Calculation ◽

Building Stock ◽

Improve Energy Efficiency ◽

3D City Models ◽

Heating And Cooling ◽

Energy Needs ◽

The Impact ◽

City Models

New planning tools are required to depict the complete building stock in a city and investigate detailed measures on reaching local and global targets to improve energy efficiency and reduce greenhouse gas emissions. To pursue this objective, ISO (the International Organization for Standardization) 13790:2008 monthly heating and cooling energy calculation method is implemented using geometric information from 3D city models (e.g., CityGML format) in an open source software architecture. A model is developed and applied in several urban districts with different number of 3D buildings in various cities. The model is validated with the simulation software TRNSYS. We also perform a sensitivity analysis to quantify the impact of climate change and other physical and behavioral factors on modelling results. The proposed approach can help to perform city or district-wide analysis of the building energy needs and prepare different renovation plans to support decision-making, which finally will enhance the livability of a city and the quality of life of the citizens.

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