ARIFIN, BAKHTIAR (2026) ANALISIS DAMPAK PERGESERAN PONDASI AKIBAT KESALAHAN TITIK PENGEBORAN DAN PEMANCANGAN TERHADAP BIAYA DAN WAKTU PELAKSANAAN KONSTRUKSI PT. NUSA RAYA CIPTA Tbk. PROYEK BEKASI MIXED USE DEVELOPMENT. S1 thesis, Universitas Mercu Buana Jakarta.
|
Text (HAL COVER)
COVER.pdf Download (421kB) | Preview |
|
![[img]](https://repository.mercubuana.ac.id/style/images/fileicons/text.png) |
Text (BAB I)
BAB 1.pdf Restricted to Registered users only Download (374kB) |
|
|
Text (BAB II)
BAB 2.pdf Restricted to Registered users only Download (420kB) |
|
|
Text (BAB III)
BAB 3.pdf Restricted to Registered users only Download (50kB) |
|
|
Text (DAFTAR PUSTAKA)
Daftar Pustaka.pdf Restricted to Registered users only Download (36kB) |
|
|
Text (LAMPIRAN)
Lampiran.pdf Restricted to Registered users only Download (4MB) |
Abstract
This study aims to analyze the impact of foundation point shifts due to drilling and piling errors on cost overruns and delays in implementation time in the Bekasi Mixed Use Development Project. The variables studied include foundation shifts/eccentricity as an independent variable defined as a mismatch in the accuracy of the pile position to the initial planned point, and construction costs and time as dependent variables. The number of samples in this case study is all spun pile and bored pile foundation points identified as experiencing technical problems (such as eccentricity, understek, undercast, and bulging) in the project work area. The sampling technique used is purposive sampling, where samples are deliberately selected based on the criteria of foundation defects or accuracy deviations in the field. The name of the data analysis method applied is descriptive quantitative analysis, through the calculation of the deviation of repair costs against the contract value of the foundation work and network analysis (critical path method) using S-Curve visualization to measure project schedule delays. The results of the study indicate that the foundation repair work caused a cost overrun of Rp2,069,519,366 (12.13% of the foundation contract value) plus repair material costs of Rp730,231,795 (1.46% of the total material supply). In addition, there was a deviation in the progress of the foundation work schedule of -8.804% which hampered the critical workflow of the upper structure. The conclusion of this study interprets that although remedial works in coordination with structural experts successfully mitigated the risk of structural failure so that the building remained technically safe, errors in the accuracy of setting out by the surveyor significantly sacrificed the economic efficiency and linearity of the project schedule. Therefore, tightening surveying controls, tool calibration, and mature geotechnical risk management are absolutely necessary. Keywords: Foundation, Cost Overrun, Implementation Time, Borepile Penelitian ini bertujuan untuk menganalisis dampak pergeseran titik pondasi akibat kesalahan pengeboran dan pemancangan terhadap pembengkakan biaya (cost overrun) dan keterlambatan waktu pelaksanaan pada Proyek Bekasi Mixed Use Development. Variabel yang diteliti meliputi pergeseran/eksentrisitas pondasi sebagai variabel independen yang didefinisikan sebagai ketidaksesuaian akurasi posisi tiang terhadap titik rencana awal, serta biaya dan waktu pelaksanaan konstruksi sebagai variabel dependen. Jumlah sampel dalam studi kasus ini adalah seluruh titik pondasi tiang pancang (spun pile) dan tiang bor (bore pile) yang teridentifikasi mengalami kendala teknis (seperti eksentrisitas, understek, undercast, dan bulging) pada area kerja proyek tersebut. Teknik pengambilan sampel yang digunakan adalah purposive sampling, di mana sampel dipilih secara sengaja berdasarkan kriteria pondasi yang mengalami cacat atau deviasi akurasi di lapangan. Nama metode analisis data yang diterapkan adalah analisis kuantitatif deskriptif, melalui perhitungan deviasi biaya perbaikan terhadap nilai kontrak pekerjaan pondasi serta analisis jaringan kerja (critical path method) menggunakan visualisasi Kurva S untuk mengukur keterlambatan jadwal proyek. Hasil penelitian menunjukkan bahwa pekerjaan perbaikan pondasi menimbulkan pembengkakan biaya (cost overrun) sebesar Rp2.069.519.366 (12,13% dari nilai kontrak pondasi) ditambah biaya material perbaikan sebesar Rp730.231.795 (1,46% dari total suplai material). Selain itu, terjadi deviasi kemajuan jadwal pekerjaan pondasi sebesar -8,804% yang menghambat alur kerja kritis struktur atas. Kesimpulan dari penelitian ini menginterpretasikan bahwa meskipun langkah perbaikan (remedial works) yang berkoordinasi dengan ahli struktur sukses memitigasi risiko kegagalan struktur sehingga bangunan tetap aman secara teknis, kesalahan akurasi setting out oleh surveyor secara nyata mengorbankan efisiensi ekonomi dan linearitas jadwal proyek. Oleh karena itu, pengetatan kontrol surveying, kalibrasi alat, dan manajemen risiko geoteknik yang matang mutlak diperlukan. Kata Kunci : Pondasi, Pembengkakan Biaya, Waktu Pelaksanaan, Pondasi Bor
Actions (login required)
 |
View Item |
