Implementation of Lean Six Sigma Method in High-Rise Residential Building Projects

Abstract

Fueled by the growth of residential needs, high rise building projects has become a major contributing segment that increases the competition in the world of construction project services [1]. In the implementation of high-rise building construction projects, scheduling and good quality control plays a very important role in the timeliness, cost, and quality of the overall project completion. Project delays often occur in the construction project implementation process. It results in poor quality that is not in accordance with the technical specifications. In the end, it causes loss to a project [2]. Project delays may occur because of internal factors, external factors, weather disturbances, changes in images, etc. Quality failures are usually caused by poor communication between parties in a project. Project development must fulfill the 3 most important things, namely cost, quality, and time. [3]. Cost overrun is one of the issues confronting the construction industry. Most of the construction projects in Malaysia have experienced a cost overrun of 5 to 10% of the total contract [4]. To control the cost, quality, and time, the researchers used the Lean Six Sigma method. Lean Six Sigma is a combination of lean and six sigma which can be defined as a business philosophy, systemic and systematic approach to identifying and eliminating waste or activities that are not value-added through the continuous increase in productivity to reach level Six Sigma, and consists of 5 stages of improvement commonly called DMAIC consisting of Define, Measure, Analyze, Improve, and Control [5]. This research focuses on basement construction, especially bore pile secant pile and excavation work. By applying the Lean Six Sigma method, we can get a cost efficiency of 6,85% and a time efficiency of 9,60 %. Therefore, this research is very useful.