scholarly journals THE SYNTHETIC THERMAL INSULATION PRODUCTION CHAIN MOVING TOWARDS A CIRCULAR MODEL AND A BIM MANAGEMENT

Rivista Tema ◽  
2021 ◽  
Vol 7 (N.2 (2021)) ◽  
Author(s):  
Keyword(s):  
Energy Savings ◽  
Public Procurement ◽  
Functional Model ◽  
Primary Role ◽  
Production Chain ◽  
Circular Model ◽  
Environmental Criteria ◽  
Internal Position ◽  
Building Information ◽  
The Look

One of the most debated issues of sustainability in the last century concerned the insulation layer, placing it at the center of technological innovation with a primary role in the design of the building shell; this change has generated an increasingly complex functional model. Its nature, morphology, and location guided the most appropriate choice: vegetable, animal, mineral or synthetic; inconsistent, panel or mat; in external, of interspace or internal position; until now, the products selection has been based on energy savings during the management phase of the building and not looking at production and disposal. This study, expanding the look at the life cycle of thermal insulators, focused on the most controversial in terms of sustainability, those of “plastic” derivation to understand with a correlative method: the trends prepared by companies to reduce “from cradle to gate” the use of fossil resources, the carbon footprint, the amount of water and energy consumed; what are the resolutions adopted to respond, with a renewed “conscious” production, to the Minimum Environmental Criteria (CAM Italian acronym) required in the Green Public Procurement (extended by virtue of state incentives also to private construction); the opening of the production system to industry 4.0 which will require a BIM (Building Information Modelling) approach for any type of intervention. After an extensive exploration to select a sample of synthetic thermal insulators, emblematic of the recent path of sustainable innovation, three investigations were undertaken aimed at highlighting: the congruity of performance of the winter and summer thermo-hygrometric profile; compliance with CAM but more extensively the attestation of their bio-ecological vocation; the conception of BIM objects for immediate use in the professional field. The results, although not homogeneous, have highlighted a great ferment in the sector, with a very promising technological level of some production lines to resolve prejudices and closures towards the synthetic thermal insulators.

Ökologische Aspekte im öffentlich-rechtlichen Beschaffungswesen

2021 ◽  
Author(s):  
Felix Steengrafe
Keyword(s):  
International Law ◽  
Public Procurement ◽  
German Law ◽  
Government Procurement ◽  
Environmental Concerns ◽  
European Law ◽  
Environmental Criteria ◽  
The Government ◽  
Model Law ◽  
The Government Procurement

The awarding of public contracts is of considerable economic importance and for this reason can be used to promote environmental concerns. The present work examines whether environmental criteria may be taken into account in the context of public procurement. To answer this question, the Government Procurement Agreement and the UNICTRAL Model Law on Public Procurement are considered at the level of international law. In European law, the primary as well as the relevant secondary law requirements and, in German law, the Cartel and Budget Procurement Law are assessed. This analysis also includes the interactions between the three levels.

scholarly journals Optimising Window Design on Residential Building Facades by Considering Heat Transfer and Natural Lighting in Nontropical Regions of Australia

Buildings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 206
Author(s):  
Zixuan Chen ◽  
Ahmed W. A. Hammad ◽  
Imriyas Kamardeen ◽  
Assed Haddad
Keyword(s):  
Heat Transfer ◽  
Energy Savings ◽  
Significant Proportion ◽  
Residential Building ◽  
Pareto Optimum ◽  
Natural Lighting ◽  
Proposed Model ◽  
Simulation Based ◽  
Building Information ◽  
Window Design

Windows account for a significant proportion of the total energy lost in buildings. The interaction of window type, Window-to-Wall Ratio (WWR) scheduled and window placement height influence natural lighting and heat transfer through windows. This is a pressing issue for nontropical regions considering their high emissions and distinct climatic characteristics. A limitation exists in the adoption of common simulation-based optimisation approaches in the literature, which are hardly accessible to practitioners. This article develops a numerical-based window design optimisation model using a common Building Information Modelling (BIM) platform adopted throughout the industry, focusing on nontropical regions of Australia. Three objective functions are proposed; the first objective is to maximise the available daylight, and the other two emphasize undesirable heat transfer through windows in summer and winter. The developed model is tested on a case study located in Sydney, Australia, and a set of Pareto-optimum solutions is obtained. Through the use of the proposed model, energy savings of up to 8.57% are achieved.

scholarly journals Microbial Resources as a Tool for Enhancing Sustainability in Winemaking

2020 ◽  
Vol 8 (4) ◽  
pp. 507 ◽  
Author(s):  
Tiziana Nardi
Keyword(s):  
Energy Savings ◽  
Anthropogenic Activities ◽  
Malolactic Fermentation ◽  
Starter Cultures ◽  
Microbial Activities ◽  
Bacterial Strains ◽  
Chemical Additives ◽  
Production Chain ◽  
Positive Effects ◽  
Sustainability Issue

In agriculture, the wine sector is one of the industries most affected by the sustainability issue. It is responsible for about 0.3% of annual global greenhouse gas emissions from anthropogenic activities. Sustainability in vitiviniculture was firstly linked to vineyard management, where the use of fertilizers, pesticides and heavy metals is a major concern. More recently, the contribution of winemaking, from grape harvest to bottling, has also been considered. Several cellar processes could be improved for reducing the environmental impact of the whole chain, including microbe-driven transformations. This paper reviews the potential of microorganisms and interactions thereof as a natural, environmentally friendly tool to improve the sustainability aspects of winemaking, all along the production chain. The main phases identified as potentially interesting for exploiting microbial activities to lower inputs are: (i) pre-fermentative stages, (ii) alcoholic fermentation, (iii) stage between alcoholic and malolactic fermentation, (iv) malolactic fermentation, (v) stabilization and spoilage risk management, and (vi) by-products and wastewater treatment. The presence of proper yeast or bacterial strains, the management and timing of inoculation of starter cultures, and some appropriate technological modifications that favor selected microbial activities can lead to several positive effects, including (among other) energy savings, reduction of chemical additives such as sulfites, and reuse of certain residues.

A Study on the Establishment of Demolition Waste DB System by BIM-Based Building Materials

2014 ◽  
Vol 522-524 ◽  
pp. 806-810 ◽  
Author(s):  
Jae Woo Park ◽  
Gi Wook Cha ◽  
Won Hwa Hong ◽  
Hyun Cheol Seo
Keyword(s):  
Building Materials ◽  
Public Procurement ◽  
Construction Material ◽  
Construction Materials ◽  
Design Tool ◽  
Information Modeling ◽  
Demolition Waste ◽  
Building Information ◽  
Item List ◽  
Design Construction

Recently, BIM (Building Information Modeling) became mandatory in Korea, and BIM started to be implemented in construction area. It is a design tool for maximizing the efficiency of design, construction, and maintenance throughout the entire lifecycle, but there are not many studies about the demolition wastes (DW) in the demolition stage. This study gathered basic data concerning the development of a database of DW disposed in the demolition stage using BIM-based building material database. For this, a BIM software, ARCHICAD, and construction material categories of the item list system of the PPS (Public Procurement Service) were analyzed to select major building materials. Based on the analysis, the disposal routes were analyzed considering the characteristics of DW. The database of DW was developed by examining the disposal routes of 52 major construction materials selected according to the characteristics of each material during demolition and selecting 7 major DW.

scholarly journals BUILDING INFORMATION MODELLING: PROCUREMENT PROCEDURE

2021 ◽  
Vol 19 (01) ◽  
pp. 180-197
Author(s):  
Vladimir Popov ◽  
Milena Medineckienė ◽  
Tatjana Grigorjeva ◽  
Arūnas Remigijus Zabulėnas
Keyword(s):  
Construction Projects ◽  
English Language ◽  
Public Procurement ◽  
Successful Implementation ◽  
Building Information Modelling ◽  
Information Modelling ◽  
Execution Plan ◽  
Depth Analysis ◽  
Building Information ◽  
Procurement Procedure

Traditional construction planning is being replaced by the building information modelling (BIM) approach, which seeks to digitalise all the construction procedures, including procurement. Successful implementation of BIM on the market requires the preparation of appropriate procurement documents. Purpose – to suggest the most suitable set of documents for public procurement in the context of BIM by analysing the documents that are necessary for implementing the stages of the building life cycle. Research methodology – in order to achieve the aim of the research, the in-depth analysis of different countries’ procurement methodological documents and analysis of the scientific articles have been implemented. The methodology also includes expert interviewing, which was done in order to analyse the investigated standards. Findings – After analysing the procurement procedures of Norway, Spain, France, Poland, the United Kingdom, the Netherlands, and Finland, a set of documents, including Employer’s Information Requirements (EIR), BIM Execution Plan (BEP) and BIM protocol, was considered as the most suitable for BIM-based procurement processes. In addition, the basic principles of ISO 19650-2:2018 do not reflect the specific conditions of each country, so it is appropriate to examine the possibility of providing guidance in individual national annexes that reflects the peculiarities of national procurement. Research limitations – some research limitations were related to the challenges to access the literature, particularly the regulatory documentation associated with the public procurement procedure in a singular Country. Also, the difficulties with and accessing the document in the English language. However, in most of these cases, the document overview was analysed or translated from the native language. Originality/Value – existing related studies are mainly oriented on a particular region/country, and no general overview of European countries regarding BIM procurement procedures has been implemented. Additionally, a significant scientific contribution of this research is the review of the fundamental standards, which includes the general specification for information management in construction projects using BIM. Implemented analysis can serve as a basis for other authors to implement their research concerning their region, to suggest the most appropriate and suitable set of documents. Practical implications – this study contributes to the preparation of the Lithuanian market for the implementation of BIM and could help policy-makers to prepare the most appropriate procurement documents.

scholarly journals Optimizing Window Design on Residential Building Facades by Considering Heat Transfer and Natural Lighting in Non-tropical Regions of Australia

2020 ◽  
Author(s):  
Zixuan Chen ◽  
Ahmed W A Hammad ◽  
Imriyas Kamardeen ◽  
Assed Haddad
Keyword(s):  
Heat Transfer ◽  
Energy Savings ◽  
Significant Proportion ◽  
Residential Building ◽  
Pareto Optimum ◽  
Tropical Regions ◽  
Natural Lighting ◽  
Proposed Model ◽  
Building Information ◽  
Window Design

Windows account for a significant proportion of the total energy lost in buildings. The interaction of window type, Window-to-Wall Ratio (WWR) scheduled and window placement height would influence the natural lighting and heat transfer through windows. This is a pressing issue for non-tropical regions considering their high emissions and distinct climatic characteristics. A limitation exists in the adoption of common simulation-based optimisation approaches in the literature, which are hardly accessible to practitioners. This article develops a numerical-based window design optimisation model using a common Building Information Modelling (BIM) platform adopted throughout the industry, focusing on non-tropical regions of Australia. Three objective functions are proposed; the first objective is to maximize the available daylight, and the other two emphasize on the undesirable heat transfer through windows in summer and winter respectively. The developed model is tested on a case study located in Sydney, Australia, and a set of Pareto-optimum solutions is obtained. Through the use of the proposed model, energy savings of up to 16.43% are achieved. Key findings on the case example indicate that leveraging winter heat gain to reduce annual energy consumption should not be the top priority when designing windows for Sydney.

scholarly journals Procurement with BIM: Lithuanian Situation Analysis and Further Development

2017 ◽  
Vol 9 (5) ◽  
pp. 541-546
Author(s):  
Miroslavas Pavlovskis
Keyword(s):  
Public Procurement ◽  
Good Practice ◽  
Construction Sector ◽  
Construction Time ◽  
Organization Model ◽  
Building Information Model ◽  
The Public ◽  
Building Information ◽  
Foreign Good ◽  
Further Development

This article deals with the role and importance of procurement in the context of Lithuanian construction, and distinguishes the main weaknesses of the public procurement. The implementation of BIM and MCDM technologies during public tendering is described. The foreign good practice is analyzed, where BIM and MCDM technology is used during organization of public tenders in the construction field. The possibilities of applying the building information model are examined throughout the entire procurement process. The procurement organization model is proposed, based on MCDM and BIM technologies. It is found that implementation of BIM and MCDM technologies in the public tenders will be beneficial for both the state and the entire construction sector by reducing project uncertainties, risk expo-sure, shortening the project documentation review and, therefore, the construction time of the object.

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