Implementation of Green Construction on the Use of Formwork at St. Thomas Building Construction Project

Formwork is a molding tool to get the shape of concrete to work as planned. The
cost of making formwork is proportional to the cost of reinforced concrete work, so the right
methods and strategies are needed to calculate the cost of formwork that can be used
repeatedly. When making a bill of quantities, the cost of formwork used is adjusted to the work
item, and in the calculation, the formwork that has been used in one application is no longer
used for the next. But the reality in the field formwork can be used repeatedly with the right
methods and strategies so that the cost for making formwork can be efficient by applying green
construction strategy with the Reuse concept. This study aims to determine the methods and
strategies as well as the percentage of green construction using green formwork for each
building floor. The research method used is qualitative and quantitative methods. Qualitative
methods are used to collect data through observation, interviews, and documentation related to
the use of formwork in projects. Quantitative methods are used to calculate the cost of
formwork for semi-system methods and one-floor rotation strategies. The results of the
research found are the semi-system method and one-floor rotation strategy resulting in the
formwork cost savings by 36.10%, and the reduced material on the application of green
construction can reduce material successively by 8% for the second use, 16% for the third use,
and 24% for the fourth use. This finding contributes to the list of work analysis related to
formwork making.