Abstract
This article presents a study of the contractors' preference for formwork system selection in Indonesian context. As decision makers, contractors are faced with challenges in choosing the formwork system for a particular project. While conventional timber formwork has been the most used formwork system in Indonesia, aluminium formwork is present although it has not been widely used. Thus, this research investigates the current practices of available formwork systems and its selection criteria in Indonesia. A decision-making framework (DMF) is developed by considering the appropriate assessment criteria for formwork system selection. This framework is then implemented through analytic hierarchy process technique. The result shows that contractors tend to choose aluminium formwork with a preference at 79% compared to conventional timber formwork with a preference at 21%. These findings can be used as considerations for contractors to start using aluminium formwork due to its excellence compared to conventional timber formwork. This study also proves that the proposed DMF can be applied and provides a sound decision related to formwork system selection.
Highlights
Conventional timber formwork has been the most used formwork system in Indonesia
Questionnaire 1 was distributed from 14th March to 2nd April 2019 directly to on-site contractors operating around Jadetabek area
The selection of formwork system by contractors in Indonesia has not been done strategically. This is due to no proper guidance available based on the multi-criteria decision-making (MCDM) approach
Summary
Conventional timber formwork has been the most used formwork system in Indonesia. timber as a construction material used especially for formwork system has become significantly scarce (Budisuwanda, 2011). The use of timber has been recorded to exceed the limit of the wood supply amount set by the Ministry of Forestry (Forest Trends and Anti Forest-Mafia Coalition, 2015). Due to this fact, Supriyatna (2016) argued that construction innovations which focus on environmental protection must be encouraged. Supriyatna (2016) argued that construction innovations which focus on environmental protection must be encouraged One of these innovations is the use of aluminium formwork system as an alternative to conventional timber formwork. While aluminium formwork has been widely used in other Asian countries such as South Korea, Japan, Singapore and Malaysia, there are limited records of its usage in Indonesia. An obstacle from the lack of aluminium formwork usage is related to the process for deciding
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