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All Journal Jurnal Permukiman J-ENSITEC (Journal of Engineering and Sustainable Technology) JCRIM (Journal of Current Research In Multidisciplinary)
Kadir, Yushar
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Pemeriksaan Mutu Beton Terpasang Menggunakan Pengujian Nondestruktif (NDT) dan Destruktif, Studi Kasus: Bangunan Beton Bertulang 4 Lantai Pratama, Egi; Kadir, Yushar; Siregar, Chandra Afriade; Gumilang S., Angga Arief
Jurnal Permukiman Vol 17 No 1 (2022)
Publisher : Direktorat Bina Teknik Bangunan Gedung dan Penyehatan Lingkungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31815/jp.2022.17.1-8

Abstract

Pemeriksaan mutu beton terpasang dapat dilakukan dengan menggunakan metode destruktif maupun nondestruktif. Pengujian destruktif mutu beton terpasang yang umum dilakukan adalah pengambilan sampel core drill. Sementara itu pengujian nondestruktif dapat dilakukan dengan beberapa metode seperti hammer test, UPV test, pull out test, dll. Namun demikian pengujian nondestruktif tidak dapat langsung digunakan untuk mengkuantifikasi kuat tekan beton terpasang dilakukan pengkorelasian data secara valid. Dalam penelitian ini dilakukan pemeriksaan mutu beton terpasang dengan menggunakan pengujian destruktif yaitu pengambilan sampel core serta pengujian nondestruktif menggunakan hammer test. Studi kasus dilakukan pada bangunan objek kajian berupa bangunan dengan struktur rangka beton bertulang 4 lantai yang dibangun pada tahun 1987. Jumlah sampel hammer test yang diambil adalah sebanyak 32 buah, dimana 13 diantaranya dilengkapi dengan pengambilan sampel core. Dari 13 data irisan sampel core dan hammer test tersebut dilakukan penyusunan kurva strength relationship yang merupakan hubungan korelasi antara nilai Rebound hammer test terhadap kuat tekan beton. Dari persamaan korelasi yang diperoleh selanjutnya dapat dilakukan pengkonversian seluruh data nilai Rebound hasil hammer test terhadap kuat tekan beton terpasang sehingga jumlah sampel pengujian pada bangunan objek kajian menjadi lebih banyak jika dibandingkan dengan hanya menggunakan sampel core saja. Hasil analisis dan interpretasi terhadap data hasil pengujian menunjukkan bahwa nilai rata-rata kuat tekan beton ekivalen terpasang pada bangunan objek kajian adalah sebesar (f_c ) Ì…=12.21 MPa, dengan nilai kuat tekan pada 10-persentil fractile yang dihitung menggunakan Tolerance factor method (Hindo dan Bergstorm, 1985) dan Alternate method (Bartlett dan MacGregor, 1995) berturut-turut adalah f_(c,eq.1)^'=5.37 MPa dan f_(c,eq.2)^'=8.87 MPa.
OPTIMALISASI TEKNOLOGI SPAM UNTUK MENDUKUNG PELAYANAN AIR BERSIH DI KAWASAN STRATEGIS BANDARA INTERNASIONAL JAWA BARAT HERYADIANA, ASEP DIAN; Rachmat, Agus; Kadir, Yushar
J-ENSITEC Vol. 11 No. 01 (2024): December 2024
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/jensitec.v11i01.11927

Abstract

The increasing demand for clean water services in Majalengka Regency, especially in the strategic area of West Java International Airport (BIJB), necessitates optimal performance from PDAM Majalengka. This study aims to evaluate and optimize SPAM technology implementation to enhance water distribution services. Using quantitative analysis through surveys and statistical testing with SPSS, findings indicate that key factors such as water pressure, continuity, quality, pricing, and complaint handling significantly influence customer satisfaction. Recommendations include upgrading distribution networks, optimizing existing water sources, and adopting advanced SPAM technologies to meet future demands.
Analysis of the Influence Factors of ULP Service Quality on PPK Satisfaction in the Electronic Selection Process of Government Goods or Services Providers in Bandung City Iqlima, Ulfa; Rachmat, Agus; Kadir, Yushar
Journal of Current Research In Multidisciplinary Vol. 2 No. 4 (2024): JCRIM (Journal of Current Research In Multidisciplinary)
Publisher : Yayasan Gema Bina Nusantara

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Abstract

Electronic Procurement Services (LPSE) aim to support transparent, efficient, and accountable government procurement of goods and services. This study assesses the satisfaction of Commitment Making Officers (PPK) with the services of the Bandung City Procurement Service Unit (ULP) using a descriptive analytical method. We collected data using a questionnaire that measured variables such as reliability, responsiveness, assurance, empathy, and tangibles. The results of the study showed that the PPK satisfaction index was in the satisfied category, with several aspects, such as speed of service and competence of ULP workers, being the dominant indicators. However, the study identified several weaknesses, such as inadequate two-way communication and insufficient physical facilities. This study provides recommendations for improving ULP services by strengthening communication, providing more adequate facilities, and offering ongoing workforce training. This study aims to improve the quality of electronic procurement of goods and services in Bandung City, thereby fostering better governance.
Analysis of Delay Factors in Drinking Water Supply System Development Projects on Small Islands (Case study of the Drinking Water Supply System Project on Maratua Island) Febiana, Indra; Rachmat, Agus; Kadir, Yushar
Journal of Current Research In Multidisciplinary Vol. 3 No. 2 (2025): JCRIM (Journal of Current Research In Multidisciplinary)
Publisher : Yayasan Gema Bina Nusantara

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Abstract

To fulfill cost, quality, and schedule restrictions, construction projects must carefully plan, execute, and oversee project management. Construction delays frequently raise expenses and lower quality. An operational Water Supply System (SPAM) is essential in distant places like tiny islands. The Seawater Reverse Osmosis (RO) SPAM Project on Maratua Island deviated 6% from the contract timeline. This study analyzes and ranks delay factors in SPAM project development on Small Islands. This study collected primary data from 90 respondents (30 Consultants, 30 Executors/Contractors, and 30 Owners/Ministry of PUPERA) using non-experimental surveys. Validity and reliability testing, the Index of Importance for ranking, and Factor Analysis (PCA) to minimize and cluster the 23 original variables were performed. PCA divided the variables into three main categories that explained 61.808% of variation. Transportation, Geographical Location, Material, and Equipment were the biggest factor, accounting for 51.801% of variation. This component includes logistical challenges like distant site transportation and import delays. Second was Manpower, Scope Changes & Work Documents (5.404%), then Planning and Coordination (4.603%). Poor contractor job performance was the biggest delay issue. To reduce delays in small island SPAM projects, logistics planning and integrated multi-party project management must be urgently evaluated.
Co-Authors Agus Rachmat Febiana, Indra Gumilang S., Angga Arief HERYADIANA, ASEP DIAN Iqlima, Ulfa Pratama, Egi Siregar, Chandra Afriade