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All Journal International Journal of Civil Engineering and Infrastructure (IJCEI)
Andika Setiawan
Muhammadiyah Jakarta University
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation

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MULTIVARIATE ANALYSIS ON THE STUDY OF PORT FACILITIES DEVELOPMENT: PCA ANALYSIS FOR LOW CORRELATION DATASET Rachmad Irwanto; Budi Satiawan; Irnanda Satya Soerjatmodjo; Andika Setiawan
International Journal of Civil Engineering and Infrastructure Vol. 3 No. 2 (2023): IJCEI Volume 3 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.3.2.10-20

Abstract

Efforts to develop existing infrastructure facilities are highly regarded in order to keep up with capacity demand and upgrade changes in data trends. To obtain the best users’ interest in the facilities that aligns management development plan and schedule, a questionnaire is commonly conducted. Datasets acquired from questionnaire featuring satisfactory level such as Likert scale tends to be ordinal. Ordinality using standard Pearson correlation lean towards weak relationship. Traditional PCA, relying on Pearson correlation, may struggle to capture the nuanced relationships within such ordinal data, leading to a loss of valuable information. Through a comparative analysis of PCA results using both covariance matrix and conventional Pearson correlation, this paper demonstrates the efficacy of the proposed methodology in uncovering latent patterns and relationships within the questionnaire responses.
VEHICLE PARKING PERFORMANCE ANALYSIS OF MARKETS IN DUREN SAWIT SUBDISTRICT Irnanda Satya Soerjatmodjo; Andika Setiawan; Alfian Dwi Indrianto; Trijeti Trijeti; Tanjung Rahayu
International Journal of Civil Engineering and Infrastructure Vol. 5 No. 2 (2025): IJCEI Volume 5 No. 2
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.5.2.68-79

Abstract

Traditional markets are characterized by direct retail transactions between sellers and buyers, operating on either a temporary or permanent basis with specific service levels. Perumnas Klender Market represents one of the prominent traditional markets in Jakarta. High levels of commercial activity during peak hours frequently result in significant vehicle accumulation within the market's parking facilities. Consequently, parking management has become a critical factor in maintaining the functionality of traditional market infrastructure. This research aims to evaluate the parking characteristics and performance for motorcycles and private vehicles. Primary data were collected through field surveys and analyzed using the parking characteristic formulations established by the Directorate General of Land Transportation’s technical guidelines. The findings indicate that the current parking area is insufficient to accommodate the volume of vehicles, primarily due to limited space and irregular parking behavior among visitors. Analytical results show a parking index exceeding 100%, signifying that vehicle demand surpasses the available capacity. By implementing the proposed alternatives, the parking index can be effectively reduced to a more sustainable level.Keywords: Traditional Market, Parking Performance, Parking Index, Parking Characteristics, Parking Accumulation
THE EFFECT OF BOREHOLE COLLAPSE ON THE STABILITY OF GROUP PILE FOUNDATIONS Farahdiba Farahdiba; Basit Al Hanif; Andika Setiawan; Aulia Nusyura Al Islami
International Journal of Civil Engineering and Infrastructure Vol. 5 No. 1 (2025): IJCEI Volume 5 No. 1
Publisher : University Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/ijcei.5.1.70-80

Abstract

The stability and load-bearing performance of pile group foundations are critical in infrastructure development, particularly in deep foundations such as bored piles. This study investigates the impact of borehole wall collapse on the load-bearing capacity and overall performance of a pile group foundation in North Jakarta, Indonesia. The borehole collapse occurred between depths of 25.2 m and 31.8 m, resulting in shortened pile lengths and reduced axial capacity. Subsurface investigations identified poorly graded sand (SP) within the collapsed zone, which contributed to borehole instability. Finite Element Method (FEM) analysis was performed to compare three scenarios: the original 48-meter design, the existing 22-meter condition post-collapse, and a redesigned pile group with additional piles. The 22meter design failed to meet the serviceability safety factor of 2.5, and several piles exceeded allowable limits. In contrast, the redesigned group fulfilled both bearing and displacement criteria, demonstrating improved structural performance. The findings emphasize the importance of design adaptation in response to construction anomalies to ensure the longterm safety and efficiency of deep foundations. keywords : Borehole Collapse, Pile Group Foundations, Bearing Capacity, FEM Analysis
Co-Authors Alfian Dwi Indrianto Aulia Nusyura Al Islami Basit Al Hanif Budi Satiawan Farahdiba Farahdiba Irnanda Satya Soerjatmodjo Rachmad Irwanto Tanjung Rahayu Trijeti Trijeti