Conference Agenda

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Session Overview
YRSB22-2: iiSBE Forum of Young Researchers in Sustainable Building 2022
Monday, 04/July/2022:
2:00pm - 3:30pm

Session Chair: Jakub VESELKA
Location: Hall D

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Where Is The Balance Between Adaptable And Optimised Structures?


University of Sheffield, United Kingdom

Recently, circular economy and material efficiency strategies regarding building design have gained increasing attention, with aims to decrease resource production and consumption whilst increasing the sustainability of cities and communities. However, the relationship between, and conflicting design approaches of, shorter- and longer-term material efficiency has yet to be comprehensively understood. To address the lack of design-based approaches in this space, the presented methodology evaluates building optimization and adaptability strategies for a composite floor design by conducting cradle-to-gate embodied carbon analysis for residential and office loading criteria. Results show that decisions made regarding floor configurations have a significant impact on the material efficiency and therefore trade-offs between increased structural capacity and floor area provision must be balanced with consequent increases in material mass. This study highlights the importance of exploring conflicting material efficiency approaches to inform sustainable material consumption, offering practical insight for structural design practitioners to work towards material efficiency.

Basic studies into BIM based Green Building Rating Tools -Case studies of an educational building-

Momoko NAKAOKA1, Tomonari YASHIRO2

1Graduate School of Engineering, The University of Tokyo, Japan; 2Institute of Industrial Science, The University of Tokyo, Japan

To enhance and clarify the building performance as a total environment, it is necessary to bridge the BIM-based design process and building assessment using Green Building Rating Tools, such as BREEAM, LEED, and CASBEE. This paper aims to propose a conceptual framework of their integration and identify possible challenges of CASBEE credits and BIM model.  

The analysis is composed of two parts, CASBEE credit classifications by the reference information and case studies of BIM use for exemplary CASBEE credits. Credit classifications show digital adaptability and suggestions to improve credit index. Case studies use BIM model developed by design documents of an educational building. As a result, the possibility of the framework applying BIM model to scoring CASBEE credits was shown. Moreover, the possible property set for BIM object and the problem that BIM model has is clarified through BIM model development for Green Building Rating Tools.

Evaluation of Applying BIM Tools and EnerPHit Standards to the UK Housing Stock for Energy Efficiency


University of Liverpool, United Kingdom

Existing buildings make a significant contribution to high energy consumption, resource depletion, and carbon emissions in the built environment. In this regard, the UK’s 2050 net-zero target aims to refurbish the UK building stock as a sustainable solution for these global issues. Despite an increasing interest of the construction industry, there has been a low uptake of housing refurbishment because of uncertainty about refurbishment strategies, cost overruns, and unexpected refurbishment outcomes. This study aims to set a new conceptual framework for utilising Building Information Modelling (BIM) tools and the EnerPHit standards for energy-efficient housing refurbishment projects in the UK. BIM implementation will be discussed for a theoretical case study within the consideration of EnerPHit standards. The proposed model provided 21-day refurbishment project activities for improved time management to avoid overlapping construction areas. The final simulation results achieved the EnerPHit heating demand criteria of less than 25 kWh/m2 annually.

Renovating the Existing Residential Building Stock in Turkey with Prefabricated Components for Passivhaus-EnerPHit


University of Liverpool, United Kingdom

The current prefabricated retrofit literature focuses mainly on buildings in cold climate conditions. There is much less research on retrofit upgrading for buildings in hot climates and there is no standard that guarantees the operational performance of these modules. Therefore, the aim of this study is to test adapting the prefabricated retrofit solutions to a hot climate region of Turkey by targeting the EnerPHit retrofit standard. The results showed that existing buildings in Turkey performs very poorly, with an energy demand of 230 kWh/m²/pa, due to energy losses from uninsulated exterior walls in winter and heat gains from glazing in summer. Therefore, retrofit intervention methods were developed around glazing type, shading design and insulating the exterior walls using EnerPHit criteria. Intervention results showed that a more than 50% reduction can be achieved in energy demand. Adding insulation was found to have the biggest impact in lowering predicted energy demand.

Reconstruction Possibilities to Achieve a Nearly Zero Energy Building


Slovak University of Technology in Bratislava, Faculty of Civil Engineering, Slovak Republic

The aim of the article is to acquaint the reader with the possibilities of reconstruction for a single family house. The main goal of renovations is to ensure today´s strict conditions for the energy consumption of buildings and thus achieve nearly zero energy buildings. The article is focused on the reconstruction of a family house, which was built in 1960. The desolated house had not been habited for decades. Two different options of reconstruction had been proposed. For comparison, different materials and technical facilities had been used for each option. The final reconstruction design has to provide thermal comfort in interior. In the article will be described the current state of the family house. This newly renovated house is monitored in order to evaluate the parameters of thermal comfort. Backward assessment of the measures will be evaluated in the last part of the article.

A Private Space in A Public – Challenges and Opportunities of Balcony Addition In Retrofitting.


Wrocław University of Technology, Poland

The challenge of GHG emissions limitation with housing retrofitting, besides the building performance improvement, should prompt the discussion about living environment enhancement. The experience of the pandemic social isolation has demonstrated the importance of access to private outdoor space as balconies, which many tenement houses are deprived of. The role of balconies in retrofitting by their impact on indoor climate has been studied thoroughly, while the research about the outdoor space design, influencing the quality of living is forsaken. The study consists of a series of interviews with inhabitants and developers demonstrating their perspective about the usability and conflicting position of balconies - situated in a public zone but remaining a private space with the on-site observation of activities and furnishings placed on balconies. The analysis aims to extend the discussion about sustainability to social aspects’ role in retrofitting and indicate the design challenges related to the outdoor space “in-between”.

Why is Timber not Widely Implemented in Large Volume Constructions?


1FH Campus Wien, Austria; 2Technische Universität Wien

Timber is proposed as a suitable material to reformulate construction since its production is less carbon intensive, it is renewable and stores carbon for the long term. Modern timber constructions are industrially manufactured, subdivided into similar elements being produced in a factory and bringing several positive aspects like higher productivity, speed of execution, fewer errors, higher quality and reliable cost and time plans. However, it needs a specific systematised and integral planning to achieve optimized results. Following this discourse, a Lean approach is proposed from design along production to execution with the purpose to explore the weaknesses and potential improvements of timber towards industrialization. A qualitative comparative analysis is proposed based on extended literature review, case studies, experts interviews and interdisciplinar workshops regarding to the design and production assessment of multi-storey timber buildings.

Refurbishment proposals for a Fachwerk-building in Einbeck

Cornelia MÜLLER

University Bamberg, Germany

Digital technologies in conservation

Refurbishment proposals for a Fachwerk-building in Einbeck

Sarah Michelle GORMLEY

University Bamberg, Germany

Digital technologies in conservation

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