PERFORMANCE IMPROVEMENT OF DIAPHRAGM WALL AT HIGH RISE BUILDING BY VALUE ENGINEERING UTILIZATION

Abstract

Diaphragm Wall (D-Wall) is a retaining wall which is also used for basement floor walls which are part of a lower structure which contributes 8% of the total cost of high-rise building construction is a job that has a high enough level of difficulty so that it has the potential to experience cost overrun. According to World Bank data that 63% of 1,778 projects experienced Over-run Cost Value Engineering (VE) used to produce more efficient and effective costs and time so as to increase profit and revenue for contractors and owners. Statistical analysis uses the Relative Importance Index (RII) method to get the ranking of the 10 most influential factors on cost savings including: Location, Picture completeness and specification, Cost efficiency, Improving function value, Better project value, Mature planning, Hole ground collapse drill, Low productivity tools, Cost Model and price fluctuations. From the results of the study Analysis of the case study obtained cost optimization of 18.83%.