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All Journal Jurnal Teknik Sipil dan Perencanaan Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Rekayasa Konstruksi Mekanika Sipil JMTS: Jurnal Mitra Teknik Sipil Jurnal Manajemen Teknologi dan Teknik Sipil (JURMATEKS) Jurnal Teknik Sipil
Cindrawaty Lesmana
Universitas Kristen Maranatha
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Analysis of Benefits and Barriers Factors in the Implementation of Building Information Modeling (BIM) in Building Construction for Contractor Gustian, Egi; Milyardi, Roi; Lesmana, Cindrawaty
Jurnal Teknik Sipil dan Perencanaan Vol 24, No 2 (2022)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v24i2.37026

Abstract

Abstract. Everywhere in the world, especially as the fourth industrial revolution begins, technological advancements are being discussed. This technological advancement also affects the building industry, one example being the use of Building Information Modeling (BIM) technology. All technologies, particularly BIM, will advance and redevelop throughout this Covid-19 epidemic. BIM has benefits and barriers to implementation that increase with its development and sophistication, particularly for contractors. Therefore, it's important to research the advantages of using BIM as well as the barriers for contractors. The purpose of this study is to analyze the benefits and inhibiting factors in the implementation of BIM in building construction for contractor. This research was conducted by using literature from previous studies to find out what statements are the benefits and barrier factors in the implementation of BIM 4D for contractors with top and middle qualifications. Then the statement was compiled into a questionnaire and distributed to respondents via online platform. In addition to obtaining the mean value for each research variable, the questionnaire survey responses were processed utilizing validity and reliability tests. The findings of this study show that the benefits of BIM implementation for top contractors include better and more appealing building design or modeling, more accurate documentation, as well as better and more attractive building design or modeling for middle contractors. The lack of training and education in BIM itself is the main obstacle to its implementation for these top contractors, while the cost of licensing BIM software or apps is fairly high for midrange contractors.
EVALUASI KINERJA STRUKTUR RANGKA BETON BERTULANG BANGUNAN EKSISTING DI SAMARINDA Maverick, Josh; Joelin, Gerard Christian; Kusbiantoro, Krismanto; Lesmana, Cindrawaty
JMTS: Jurnal Mitra Teknik Sipil Volume 8, Nomor 1, Februari 2025
Publisher : Prodi Sarjana Teknik Sipil, FT, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmts.v8i1.30857

Abstract

Building repurposing is a common practice within the construction industry. Ensuring the safety of a structure is a crucial thing during the process. In the context of supporting the development of the Chinatown area in Samarinda, a safety evaluation of existing buildings in Samarinda City was conducted. The main goal of this evaluation was to evaluate the structural safety when building repurposing. The assessment employed multiple methods, including the Rapid Visual Screening (RVS) method, the story drift analysis, the P-Delta effect evaluation, and the FEMA 440 pushover analysis. Those analyses were selected to provide a thorough examination of the buildings' structural performance under various conditions. The results revealed a difference among the results. Specifically, the buildings passed the safety criteria set by the Rapid Visual Screening, the inter-story drift analysis, and the P-Delta effect evaluation. However, the buildings did not meet the safety requirements when evaluated using the FEMA 440 pushover analysis. The results indicate that in the pushover analysis, additional structures such as cantilever structures can be the first elements to fail during an earthquake. Abstrak Alih fungsi menjadi hal yang umum dilakukan pada bangunan. Ketika melakukan alih fungsi, Pemeriksaan terhadap keamanan bangunan perlu diperiksa. Dalam mendukung proses pembangunan kawasan pecinan di Samarinda, pemeriksaan pada bangunan eksisting di Kota Samarinda dilakukan dengan tujuan memeriksa keamanan bangunan saat bangunan akan dialih fungsikan. Pemeriksaan dilaksanakan dengan metode Rapid Visual Screening, analisa simpangan antar tingkat, evaluasi pengaruh P-Delta, dan analisa pushover FEMA 440. Cara ini dipilih untuk memberikan pemeriksaan menyeluruh terhadap kinerja struktural bangunan dalam berbagai kondisi. Hasil menunjukan bahwa setiap analisa memliki hasil yang berbeda antara satu sama lain, dimana bangunan dinyatakan lulus dalam Rapid Visual Screening, analisa pemeriksaan simpangan antar tingkat dan evaluasi pengaruh P-Delta, namun belum memenuhi dalam analisa pushover FEMA 440. Hasil menunjukan bahwa dalam analisa pushover, struktur tambahan seperti struktur kantilever dapat menjadi struktur yang menyebabkan kegagalan struktur pertama kali ketika terjadinya gempa.
Comparative Analysis of Earthquake Loss Estimation Using HAZUS Method with Modified Building Capacity Curve Sugianto, Joesack Renaldi; Lesmana, Cindrawaty; Milyardi, Roi
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 2 (2024): EDISI SEPTEMBER 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i2.5676

Abstract

Based on the World Bank publication in 2019, one of the strategies to improve disaster financial resilience is the availability of loss estimation data. As one of the vulnerable countries affected by earthquake disasters, Indonesia does not yet have a widely used pre-disaster estimation model. Model adoption is one of the strategies used to improve disaster resilience in Indonesia. The HAZUS method is a model FEMA (Federal Emergency Management Agency) developed to estimate earthquake losses in the US. The adoption process in Indonesia requires adjustments to the EDP (Engineering Demand Parameter) used in the HAZUS model. The EDP in the HAZUS model consists of capacity curves, fragility curves, and repair cost coefficients. The statistics of buildings affected by earthquakes in Indonesia from 2000 to 2020 show that residential houses are the most affected buildings. This study aims to obtain comparative results of the HAZUS model structural element loss estimation with modified data of local capacity curve pushover results in Indonesia. The study was conducted by performing a pushover analysis on a case study of a residential building to obtain a capacity curve. In this study, the EDP analyzed was only the EDP of the capacity curve. The case study was conducted at housing cluster X in West Bandung Regency, West Java, using house type T94/120 as the case study structure. The results of the capacity curve comparison show that the capacity curve of the local house from the pushover analysis has lower stiffness and ductility. The comparison of loss estimation for single hazard scenarios shows that the modified curve method has the most conservative loss estimation than HAZUS in the hazard of earthquake return periods of 100, 250, 500, and 750 years. The annual loss estimation shows that the modified capacity curve provides the most conservative or 37.5% larger in annual loss estimation.  
Perbandingan Biaya, Durasi, dan Kerugian Pendapatan Operasional Metode Perkuatan Struktur Kolom Beton Bertulang Gedung Pabrik Suryamisena, Camelia Rafella; Milyardi, Roi; Lesmana, Cindrawaty
Jurnal Rekayasa Konstruksi Mekanika Sipil Vol 7 No 2 (2024): Volume 7 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Katolik Santo Thomas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54367/jrkms.v7i2.3983

Abstract

Perkuatan struktur kolom beton bertulang pada gedung pabrik memiliki pengaruh pada kegiatan operasional, secara khusus pendapatan dari pabrik. Pada pemilihan metode perkuatan pada pabrik, estimasi kerugian pendapatan perlu dipertimbangkan selain kriteria umum lainnya. Studi ini bertujuan mendapatkan perbandingan metode perkuatan kolom beton bertulang antara metode steel jacketing (SJ) dan penggunaan carbon fiber reinforced polymers (CFRP) pada gedung pabrik berdasarkan aspek biaya, durasi pekerjaan, dan dampak kerugian pendapatan operasional pabrik. Studi kasus dilakukan pada fasilitas gedung pabrik di Provinsi Lampung, dengan 2 kolom yang akan diperkuat hasil analisis tahapan studi sebelumnya. Analisis biaya dan durasi dilakukan mengacu Analisis Harga Satuan Pekerjaan (AHSP) PerMen PUPR No.28/PRT/M/2016 dan harga satuan daerah pada wilayah Provinsi Lampung. Estimasi kerugian operasional pendapatan (YLOSi) pabrik dikalkulasi melalui pendekatan model HAZUS. Hasil penelitian menunjukkan pada aspek biaya, metode CFRP memiliki biaya yang lebih besar  dengan selisih 37,02% dibandingkan metode SJ. Pada aspek durasi pelaksanaan, metode CFRP memiliki durasi yang lebih singkat  dengan selisih 2 hari (40,00%) dibandingkan metode SJ. Pada aspek YLOSi pabrik menunjukkan metode CFRP memiliki estimasi kerugian lebih kecil dengan selisih 40,00% dibandingkan metode SJ. Namun pada total biaya tanggungan (biaya pelaksanaan dan estimasi kerugian), metode CFRP memiliki nilai lebih besar 24,28% dibandingkan metode SJ.
Faktor Utama Keterlambatan Pembayaran Dalam Proyek Perumahan Subsidi dan Komersial Verel, Bunga Olivia; Milyardi, Roi; Lesmana, Cindrawaty
Jurnal Manajemen Teknologi & Teknik Sipil Vol. 7 No. 1 (2024): JUNE
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jurmateks.v7i1.5244

Abstract

In the implementation of housing development, the problem of late payment delays is a common issue encountered in commercial and subsidized housing projects during construction. These delays impact the timely completion and lead to disputes among the involved parties, which include owners, contractors, and subcontractors. This study aims to analyze the primary factors contributing to late payment in construction projects, specifically in commercial and subsidized housing. The analysis is conducted from the perspective of the owner, contractors, and subcontractors. The study involves six owner respondents, six contractor respondents, and four subcontractor respondents. The survey results were analyzed using the Analytical Hierarchy Process (AHP) to assess the significance of various factors influencing payment delays in both housing schemes. The analysis results indicate that financial issues with the owner's company are crucial factors from the owner's perspective in causing payment delays in both commercial and subsidized housing projects. A major challenge faced by contractors is the lack of capital availability, which can lead to delays that affect all involved parties. Meanwhile, discrepancies between job specifications not following the contract from the subcontractor's viewpoint highlight the importance of clear communication and rigorousness. All parties involved in housing projects need to improve financial management, enhance capital procurement, and tighten the supervision of contract implementation. By identifying key factors, adopting best practices can help mitigate the risk of payment delays and improve efficiency in future housing project implementations, whether commercial or subsidized.
Studi Analitis dan Eksperimental Pengaruh Spasi Baut pada Sambungan Kritis Selip Struktur Baja Sulandari, Noek; Lesmana, Cindrawaty
Jurnal Teknik Sipil Vol 22 No 1 (2026): Jurnal Teknik Sipil
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28932/jts.v22i1.13873

Abstract

 Bolt steel connections using slip-critical type rely on the clamping strength of the connected surfaces due to the pre-tensioning of high-strength bolts (HSB) used, making them more complicated to apply and more expensive than bearing-type connections with bolt tightening to snug-tight conditions. However, SNI 1729:2020 and SNI 7972:2020 require that pre-tensioned bolt connections must be used at the end connections of double components and if working under vibration/dynamic loads. The purpose of this study is to conduct an analytical and experimental study of the effect of bolt spacing which means the effect of the distance of the clamping point on the shear strength of the critical slip bolt connection. The analytical study was carried out following the regulations, namely SNI 1729: 2020. Experimental studies in the laboratory used HSB A325 M-12 with 3 (three) test specimen models, each 3 (three) specimens distinguished by bolt spacing. The results of the nominal shear strength test of the critical slip connection were 73 kN for test specimen 1 (40 mm spacing) and 60 kN for test specimen 2 (70 mm spacing) and test specimen 3 (96 mm spacing). There was a change/decrease in the strength of the connection with increasing bolt spacing which means increasing the clamping distance but overall, it still met the results of the calculation of the critical-slip connection nominal strength according to provisions, which was 35.94 kN.
Co-Authors Gustian, Egi Joelin, Gerard Christian Krismanto Kusbiantoro Maverick, Josh Noek Sulandari Roi Milyardi Sugianto, Joesack Renaldi Suryamisena, Camelia Rafella Verel, Bunga Olivia