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All Journal Jurnal Teknologi Jurnal Konstruksia Rekayasa Sipil Jurnal Teknik Sipil Jurnal Rekayasa Sipil axial : jurnal rekayasa dan manajemen konstruksi Teknomekanik Jurnal Pengabdian West Science Journal of Civil Engineering and Vocational Education
Ashadi, Reza Ferial
Civil Engineering Of Department, Universitas Mercu Buana, 11650, Indonesia
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation

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Inspection of Foundation Structures with Pile Integrity Test (PIT) of Steel Tower Building Citra, Zel; Malinda, Yosie; Dwiyanto Wibowo, Paksi; Ferial Ashadi, Reza; Wibisono, Anom; Apdeni, Risma
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.10

Abstract

Pile Integrity Test (PIT) is a tool from Pile Dynamic Inc. (PDI), consisting of a mini-computer, accelerometer, and hammer. Integrity testing on piles using PIT equipment is carried out by analyzing one-dimensional wave propagation provided by hammer blows on the pile head. An accelerometer sensor installed on the pole will read the reflection that occurs during wave propagation on the pole head. The wave propagation speed that occurs in concrete will range from 3,500 m/s to 4,200 m/s. The PIT test results indicate the reduction in impedance in the pole by the BTA value, which compares the theoretical impedance value to the residual impedance. From the results of the Pile Integrity Test carried out at three pile points, it was found that all samples experienced a reduction in impedance around a depth of ± 3.0 meters below the sensor with BTA values of 75%, 78%, and 72% and fell into the damaged category. The reduction in impedance at a depth of 3 meters is most likely part of the connection between piles because one pile point uses 2–3 spun piles, with the length of 1 spun pile being 9 meters. From the results of visual observations, it can be seen that the condition of the existing spun pile and pile cap is still quite good.
INTEGRASI LEAN CONSTRUCTION DAN MANAJEMEN RISIKO BERBASIS JAVA PROGRAMMING GUNA OPTIMASI BIAYA KONSTRUKSI PRECAST Citra, Zel; Wibowo, Paksi Dwiyanto; Malinda, Yosie; Wibisono, Anom; Ashadi, Reza Ferial; Elza, Suci Putri; Apdeni, Risma
axial : jurnal rekayasa dan manajemen konstruksi Volume 13, Nomor 1, April Tahun 2025
Publisher : Universitas Wijaya Kusuma Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30742/axial.v13i1.4336

Abstract

Proyek konstruksi pembangunan Hotel & Resort di Samosir adanya potensi terjadinya keterlambatan pekerjaan. Oleh karena itu diperlukan satu inovasi dalam upaya peningkatan kinerja biaya melalui integrasi metode Lean Construction dan manajemen risiko berbasis  Java Programming pada proses forecasting untuk optimasi kinerja biaya proyek konstruksi bangunan precast. Lean Construction merupakan metode yang bertujuan untuk simulasi peningkatan value atau nilai tambah produksi serta mengurangi biaya operasi (waste). Sedangkan manajemen risiko merupakan tata kelola untuk menentukan rencana tindak lanjut atas beberapa kejadian yang memiliki dampak pada kelangsungan suatu proyek. Dalam hal ini integrasi atas dua metode tersebut akan dibuat dalam sebuah program pemodelan berbasis Java Programming. Hasil dari simulasi integrasi metode Lean Construction dan manajemen risiko, dimana besarnya biaya risiko sebelum dioptimasi yaitu Rp 14,753milyar. Selanjutnya dari hasil analisis optimasi dengan Lean Construction dan manajemen risiko berbasis aplikasi Java Programming,maka hasilnya adalah biaya risiko turun sebesar 51% menjadi Rp 7,230milyar. 
Co-Authors Albert Eddy Husin Anom Wibisono Bernadette Detty Kussumardianadewi Citra, Zel Eka Nur Fitriani Elza, Suci Putri Fitra Rifwan Fitriani, Eka Nur Fitriansyah, Erlangga Rizqi Intan Purnama Sari Ireng Guntorojati Kurnianto, Muhammad Fajar Malinda, Yosie Mamonto, Rizky Harumdhany Melinda, Annisa Prita Nevy Sandra Oties T Tsarwan Putri, Prima Yane Reni Karno Kinasih Risma Apdeni Suprapti Suprapti Suprapti Suprapti Wibowo, Paksi Dwiyanto