The energy demand growth every year for existing building due to the natural lifecycle of the building performance. Systematic strategy in retrofitting is proven to revamp the energy building performance. However, the retrofitting process is facing several of unknown risk as early in pre-construction stage to achieve optimum energy efficiency design strategy. The risk requires strategic assessment to minimize the impact towards the efficiency level in retrofitting. This study aims to examine the risks and the potential impact towards design strategies by conducting a semi-structured interview from six internal stakeholders in the retrofit project. The result derived from the interview revealed that there are 13 of major risks involve in retrofit project and divided into planning stage and design stage. All the risks are proven to provide a potential impact towards energy efficiency design strategies.
A green building has generally been adopted as one of the most effective strategies towards sustainable development in many countries which is vital in order to create sustainable environment. Despite the benefits of green retrofit to the sustainable environment, there are still retrofitted building is performed below expectation during planning stage which eventually rising operation cost. Although energy efficiency study is over emphasize in green building field, little attention has been paid off to examine the crucial phases in pre-construction stages for green retrofit and a risk that bring energy deficiency. Therefore, the aim of this research is explore a risk that influencing energy efficiency in each phases of pre-construction stage for green retrofit towards commercial building in Malaysia. The study is further support by interview sessions that has been carried out with five retrofit architects that actively involved in construction of commercial buildings in Malaysia. Based on the interviews, the risk in pre-construction stage is crucial to be assessed to minimizing energy deficiency in retrofit project. The findings of the study may useful for design consultant to deliver retrofitting project towards achieving feasible energy efficiency building.
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