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profile_special_modernisierung_01_2012

eines Gebäudes entscheidend, Prozess- und Standortqualität kommen hinzu. Eine ganz- heitliche Planung von Maßnahmen ist dabei besonders für Sanierungen von entschei- dender Bedeutung. Neben dem Energie-Ein- sparpotential durch bauliche Maßnahmen wird auch der Bereich Energiemanagement — und damit die Gebäudeautomatisation — so- wie die Schulung der Nutzer langfristig eine große Rolle hinsichtlich des Energieverbr- auchs von Immobilien spielen. Ein Zertifikat ist dann der krönende Abschluss eines andauern- den Prozesses. Whereas just a few years ago, an energy effi- ciency certificate was the exception, today, certification is extremely important, almost standard practice, for the successful market- ing of property and is demanded by tenants and investors alike. A welcomed consequence of the small percentage of new-build property on the market, was that for the first time, at the 2011 property trade fair EXPO REAL in Mu- nich, the DGNB certificate was awarded for refurbished existing buildings. In contrast to the certification of new-build, where design based values are used for clas- sification, with existing buildings real values from the building's operation are used. Important factors for the distinction of existing buildings are intelligent water and energy management, optimized use of daylight and the possibility of individual control by the user. In addition to the actual energy and water con- sumption and the operating and maintenance costs, the quality of building management in- cluding maintenance and resource manage- ment plays an important role in the certifica- tion of existing buildings. In order to make a valued assessment of a property portfolio, the DGNB offers a criteria catalogue for the analysis of existing buildings. Clients, investors and planners can use this analysis tool to make sound judgements about the building condition, the condition of plant facilities and the quality of building manage- ment. In assessing the steps which need to be taken to improve existing buildings, ecologi- cal, economical and socio-cultural criteria as well as functional qualities of a building includ- ing process and location quality are all impor- tant factors. Therefore the integrated planning of refurbish- ment measures is particularly important. In ad- dition to the energy saving potential through building modernization, energy management and building automatization as well as educat- ing users, will have a long term effect on a property’s energy consumption. A certificate is the crowning achievement of a continuing process. Zertifizierung von Bestandsgebäuden 1. Analyse Eingehende Analyse des Bestands hinsichtlich baulicher Aspekte, Anla- gensubstanz und Betrieb des Gebäudes 2. Entscheidungsgrundlagen Erstellung von tragfähigen Entscheidungskriterien als Grundlage eines Maßnahmenkatalogs 3. Zertifizierungskriterien Für die Zertifizierung fließen sechs Themenfelder in die Bewertung mit ein: ökologische, ökonomische und soziale Qualität, Prozessqualität, technische Qualität und Standortqualität. 4. Bewertungsvoraussetzungen Folgende Kriterien für eine Zertifizierung von Bestandsgebäuden müs- sen erfüllt werden: Gebäude müssen 5 Jahre im Betrieb sein, größere Renovierungsmaßnahmen liegen länger als 5 Jahre zurück (nur kleinere Maßnahmen mit maximal 20% neuen Bauteilen bezogen auf die Gebäu- demasse/Bruttogrundfläche sind zulässig) Certification of existing buildings 1. Analysis Detailed analysis of existing building elements, plant facilities and building operations 2. Decision basis Production of sound decision making criteria as a basis for a list of measures 3. Certification criteria Six areas are evaluated for certification: ecological, economical and social quality, process quality, technical quality and location quality 4. Evaluation requirements The following criteria must be met for the certification of existing buildings: Buildings have to have been in operation for at least 5 years, any significant refurbishment must be over 5 years old (only smaller re- furbishment measures which account for a maximum of 20% of new buil- ding components related to the building’s total gross area are permitted) 11prolog | profile Special Modernization

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