Penerapan Pengendalian Kualitas menggunakan Statistical Process Control (SPC) dalam Upaya Meningkatkan Manajemen Mutu

Abstract

In the construction of buildings, where the volume of concrete used is substantial,
conducting casting only once is not feasible. Therefore, the repetitive casting process
necessitates strict supervision and control to ensure its quality. Deviations in the quality
of concrete in a construction project can significantly impact non-performance costs and
the project's implementation timeline. This research aims to analyze the variability and
trends in concrete quality during the construction of the project. The method employed in
this study is the Statistical Process Control (SPC) method to control the quality of
concrete production. This research is of a qualitative descriptive nature, where data is
extracted from production process inspection documents owned by the technical and
quality departments of the contractor. The analysis results indicate that the variability in
compressive strength can be considered good, as it yields relatively uniform concrete
strength. The evaluation of concrete quality, in accordance with the SNI 03-2847-2019
standard on the Procedure for Calculating Concrete Structures for Buildings, shows that
the quality of concrete in the construction project of Apartment X in Surabaya can be
categorized as meeting the requirements for concrete with a strength of fc 24.06 MPa or
equivalent to Grade K 300. Through the implementation of the SPC method, the quality control of concrete production can be better assured, allowing the construction project
to proceed efficiently and in accordance with the established quality standards.