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Jurnal Spektran

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Published by Universitas Udayana

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Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

Jurnal Spektran merupakan berkala ilmah online yang dikelola oleh Program Magister Teknik Sipil, Program Pascasarjana Universitas Udayana. Terbit pertama kali pada bulan Januari 2013 dan selanjutnya diterbitkan 2 kali setahun setiap bulan Januari dan Juli. Jurnal Spektran mempublikasikan hasil penelitian dan kajian dari mahasiswa, akademisi, praktisi dan pengamat masalah ketekniksipilan.

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Articles 252 Documents

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MANAJEMEN RISIKO KESELAMATAN DAN KESEHATAN KERJA (K3) PADA PROYEK PEMBANGUNAN CIPUTRA WORLD JAKARTA I Wayan Wiyasa; I G. A. Adnyana Putera; Mayun Nadiasa
JURNAL SPEKTRAN Vol. 3, No. 1, Januari 2015
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Abstract :Generally, in Indonesia the subject of Occupational Health and Safety is often forgotten. This is proven with the high number of work accidents in Indonesia. In 2011, there were 99.491 incidents or on average 414 work accidents cases per day. In 2010 there were 98.711 work accidents, 96.314 cases in 2009, 94.736 cases in 2008 and 83.714 cases in 2007. This reserch is intended to asses the possible major risk of Occupational Health and Safety for The Ciputra World Jakarta building Project, and offer solutions to deal with any unexpected risk. This research was conducted with a descriptive and qualitative method. Survey was carried out to get opinions from respondents on Occupational Health & Safety risks during the construction of the Ciputra World Jakarta. There are Seventy eight (78) high risks were identified with the most being Tower Crane operation job, installation of steel column, beam, and wall with 5 risks. The 2 extreme risks were found in column casting and screeding exterior wall with 1 risk. Suggestion given is to organise training relation to Occupational Health and Safety risk to every employee, introduve shift system, allocate alternate day off to employees, provide health/medical check up, and eliminate high risk and dengerous work environment.

MANAJEMEN RISIKO PERENCANAAN PEMBANGUNAN INFRASTRUKTUR PELABUHAN BENOA Pande Pt Anggi Indraswari P. J; I Nyoman Norken; Putu Alit Suthanaya
JURNAL SPEKTRAN Vol 6 No 2 (2018): Vol. 6, No. 2, Juli 2018
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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ABSTRAK Menurut data PT Pelindo III (2016), jumlah kedatangan wisatawan melalui Pelabuhan Benoa meningkat, namun banyak kapal hanya dapat berlabuh di perairan pelabuhan karena kurangnya fasilitas. Kurangnya fasilitas juga mengakibatkan ekspor Bali menurun. Berdasarkan hal itu, pemerintah merencanakan pengembangan infrastruktur Pelabuhan Benoa. Perencanaan ini dapat menimbulkan berbagai risiko, jadi dibutuhkan kajian untuk mengidentifikasi risiko tersebut. Jenis penelitian ini adalah penelitian deskriptif kualitatif yang menggunakan metode wawancara dan survey, kemudian dituangkan dalam bentuk kuisioner yang diberikan kepada responden. Pemilihan responden dengan metode purposive sampling, yaitu memilih responden yang mampu dan berpengalaman. Penilaian risiko menggunakan metode likelihood dan consequences untuk menentukan risiko dominan. Selanjutnya dilakukan proses mitigasi dan mengalokasi kepemilikan risiko. Hasil penelitian menunjukkan 39 risiko teridentifikasi, yaitu 9 risiko tidak dapat diterima, 25 risiko tidak diinginkan, 3 risiko dapat diterima dan 2 risiko diabaikan. Mitigasi risiko untuk 34 risiko dominan (9 risiko tidak dapat diterima, yaitu terbatasnya alur perairan, masalah perijinan dan gangguan aksessibilitas dan juga untuk 25 risiko tidak diinginkan, yaitu masalah desain, bencana alam dan koordinasi pekerja). Kepemilikan risiko dialokasikan kepada pihak-pihak yang terlibat, yaitu Pemerintah Pusat (Kesyahbandaran dan Otoritas Pelabuhan Benoa (KSOP Benoa), Direktur Jenderal Perhubungan Laut, Departemen Perhubungan), Pemerintah Daerah (Dinas Perhubungan, Badan Lingkungan Hidup) dan perusahaan di Pelabuhan Benoa, yaitu PT. Pelindo III

KERAWANAN LONGSOR LERENG JALAN STUDI KASUS RUAS JALAN SUKASADA – CANDI KUNING Ririn Hartini; I W. Redana; I.G.N. Wardana
JURNAL SPEKTRAN Vol. 2, No.2, Juli 2014
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Slope stability analysis along roads Denpasar – Singaraja have been calculated using Felenius Method and Software Plaxis 8.2. This calculation was conducted using material model Mohr - Columb, soil cohesion (c) and tan f soil parameters. Calculations safety factor using phi – c reduction value, condition until structural failure occurs. The results of computation Felenius Method give stability value Fs < 1.5 which mean landslide would be accurred in this slope. Calculation using Plaxis 8.2 produce Fs > 1,5. This study has been on optimization of soil parameters, so that plaxis gives better result. This study may conclude that plaxis should be used with caution and with proper soil parameters

PENGARUH RISIKO PADA PROYEK PERLUASAN DAN RENOVASI HOTEL DI BALI TERHADAP BIAYA, MUTU, DAN WAKTU PELAKSANAAN PROYEK IG.N Indra Cahya Hardiana; G.A.P Candra Dharmayanti; Ida Ayu Made Budiwati
JURNAL SPEKTRAN Vol 6 No 1 (2018): Vol. 6, No. 1, Januari 2018
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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The project construction at the hotel wherein the existing hotel is still operating have higher risk than a new projects which starting from begining because the owner want the existing hotel still operate as usual during the construction project activity. This study aimed: to analyze the major risks that may occur in hotel renovation and extention project; and to analize their impact on the cost, time, and quality. Data collected by interviews and survey using questionnaires. Respondents were selected based on purposive sampling includes 71 respondents (contractors, consultants, owners and hotel operators) on this project. The data were analyzed by descriptive qualitative risk analysis. The number of the risks identification were 54 risks. 28 risks are categorized as major risk which sourced from criminality, permit, contract, pollution, natural conditions, price change, financial problems, project access, planning and design, project supervision and implementation, procurement, human resources, and social. That major risk such as pollution, limited access and land of projects, existing installation, the availability of existing material, contractor experience, partition blocks, and the time adjusment of project activities with hotel operational time. From that 28 major risks, 15 risks affect to the cost, 25 risks affect to the time, and only 3 risk affect to the quality. This study will be continued to formulate the actions to mitigate the major risks. Keywords: Cost, Hotel Renovation Project, Quality, Risk Management, Risk Mitigation, Time

ANALISIS KINERJA PELAYANAN GARDU TOL PADA JALAN TOL BALI MANDARA Ayu Indah Kencana Dewi; P. Alit Suthanaya; I.N. Widana Negara
JURNAL SPEKTRAN Vol 4 No 1 (2016): Vol. 4, No. 1, Januari 2016
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Abstract: At present, thetoll roadhas an important role to serve traffic flow, especiallyin regionsuch asNusaDua.At this time, has not been knowncharacteristics ofvehiclearrivalandserviceoftoll gate. The objectives of this study are: to analyze the characteristics of vehicle arrival rate, to analyze the characteristics of service level toll gate, to analyze the performance of services toll gate and in order to analyze the optimal number of toll gate according to the arrival rate of vehicles at the entrance to the toll road Bali Mandara. Results of analysis showed thatthe characteristics ofvehicle arrivalin cashtoll gateandelectronictoll gatefollowedPoissondistribution. Characteristicstoll gate1, toll gate2andtoll gate3 had a negativeexponentialdistribution. Performance of cashtoll gateservice systemswithdisciplineFVFSqueuewas: =1,131vehicles/min, =0,230vehicles/min, =0,128, and =0,026min. Performanceof electronictoll gateservice systemwithFIFOqueuingdiscipline was: =0,000923vehicles/min, =0,000001vehicles/min, =0,001668minutes, and =0,000002minutes. The results ofthegeneralisedcost analysisforcashtoll gate showedthat optimalconditions for existing vehicle arrivals can be achievedif onlyone toll gate was opened.

PENGEMBANGAN SISTEM ESTIMASI BIAYA PROYEK KONSTRUKSI BERBASIS KOMPUTER I Nyoman Suardika; I Gusti Agung Adnyana Putera; Anak Agung Gde Agung Yana
JURNAL SPEKTRAN Vol 7 No 1 (2019): Vol. 7, No.1, Januari 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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DEVELOPMENT OF COMPUTER BASED CONSTRUCTION PROJECT COST ESTIMATING SYSTEM ABSTRACT The process of calculating construction project cost estimates, especially detailed estimates, requires high accuracy and relatively long time depending on the size of the project, the number of estimators involved, the level of expertise and experience of the estimator. On the other hand, the advances in computer technology have not been fully optimized to aid cost estimation calculations. The objective of this research is to develop computer based cost estimation system of construction project. The system is designed to estimate project cost throughout the project life cycle both conceptual and detailed estimates. The method of development system used phased development which was modeled using Data Flow Diagrams (DFD) for process modeling, and Entity Relationship Diagram (ERD) for data modeling. Based on the results of weakness analysis on the old system, the proposed system architecture was using Client-Server Architecture model, with Microsoft SQL Server as database server. In the database server, it was created functions to serve requests for information sent by the client computer. To support the required information, the proposed concept integrated PBS (Product Breakdown Structure), WBS (Work Breakdown Structure) and RBS (Resource Breakdown Structure) to produce detailed cost estimation based on building components, work items and project resources. The cost estimation of the ongoing projects can be recorded as a database of cost estimation for future projects.

ANALISIS RISIKO DALAM ALIRAN SUPPLY CHAIN PADA PROYEK KONSTRUKSI GEDUNG DI BALI Kadek Aditya Dei; G.A.P. Candra Dharmayanti; N. Martha Jaya
JURNAL SPEKTRAN Vol 5 No 1 (2017): Vol. 5, No. 1, Januari 2017
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Abstract: Contruction project is began by the necessity of the owner who than passed on to other parties such as consultant, contractor, sub-contractor, supplier, labour that are interlinked into a chain of construction project . The relationship between these parties put contractor as the chain in this relationship, known as construction supply chain (CSC). In CSC there are possibilities of risks that can increase the project cost, thus impact on the declining of the contractor’s profit. These source from three flows of supply chain system, that is flow of informations, flow of material and flow of funds. This research aims to analysis the supply chain risks on building construction project in Bali that affect on the declining of contractor’s profit. Data was collected using a questionnaire survey. The respondents were selected based on purposive sampling method, covers the experst on building construction projects. The method of analisys covers risk assement and linear regression analysis. The risk assement analysis shows that there are 26 major risks (6 risk in flow of information, 16 risks in flow of material and 4 risks in flow of fund). The regression analysis suggests that risks sourced from flow of informations is the most significant factor that increase the projects cost, therefore mitigating focused on the flow of information with develop project’s administration as shop drawing, work permits, material’s approval, completeness of contract and daily coordination.

PERILAKU TEKAN DAN LENTUR DINDING PASANGAN BATAKO TANPA PLESTERAN, DENGAN PLESTERAN DAN DENGAN PERKUATAN WIREMESH Made Yani Anggreni; I K. Sudarsana; M. Sukrawa
JURNAL SPEKTRAN Vol. 3, No. 2, Juli 2015
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Concrete blocks are one of the common materials used in construction practice because they are quite easy to get and the price is relatively cheap. Masonry (either concrete blocks or bricks) is a structure consisting of a binding material (mortar) and a filler material (such as concrete blocks). In general, masonry is very good at resisting gravity loads, but not quite good at resisting shear loads such as loads generated by earthquakes, so it requires reinforcement in the form of plaster and additional wire mesh in the plaster of the masonry. Due to several problems of the masonry frame structure, it is necessary to conduct a research on the quality of the masonry to find out the compressive and flexural behavior of the masonry with reinforcement namely plaster and wire mesh. The method used in this study was laboratory testing by creating specimens of concrete block masonry. Variations of masonry for compressive tests in this study 3 specimens varied based on the orientation namely Type A (Horizontal), Type B (Vertical) and Type C (Diagonal), and 3 specimens varied based on the treatment: masonry without plaster (TP), masonry with plaster (DP), and masonry with wire mesh reinforcement (DPW). Variations of masonry for bending tests perpendicular to the bed joint (LA) and parallel to the bed joint (LB). Based on the results the crack patterns occurring in the specimens were relatively the same, where the initial cracks occurred predominantly in the interface area between the mortar and concrete blocks. The compressive strength of the concrete block masonry with plaster had a higher value than that of with wire mesh reinforcement. This was due to adhesion between the mortar and wire mesh and poor density so the performance of wire mesh was less effective. The concrete block masonry of Type C had the highest modulus of elasticity value. This was because the propagation of cracks that occurred in the masonry of Type C was slowed down by the position of the concrete blocks, which were installed with a slope of 45o. Meanwhile, the propagation of cracks of Type A and Type B occurred vertically in the interface between the mortar and concrete blocks. Flexural strength values ??of specimens that were perpendicular to the bed joint (LTPA, LDPA, and LDPWA) were much higher than that of parallel to the bed joint (LTPB, LDPB and LDPWB). The addition of the wire mesh reinforcement to the compressive load did not contribute much to the stiffness of the masonry. Meanwhile in the bending tests, the addition of wire mesh reinforcement resulted in an increase in the flexural strength values of the concrete block masonry.

MANAJEMEN RISIKO TAHAP KONSTRUKSI PEKERJAAN PENINGKATAN JARINGAN IRIGASI DAS (DAERAH ALIRAN SUNGAI) TUKAD SUNGI DI KABUPATEN TABANAN I Nyoman Norken; Kadek Diana Harmayani; Ni Putu Indah Yuliana
JURNAL SPEKTRAN Vol 7 No 1 (2019): Vol. 7, No.1, Januari 2019
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

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RISK MANAGEMENT AT THE CONSTRUCTION STAGE OF IMPROVING THE IRRIGATION NETWORK OF THE SUNGI RIVER WATERSHED AREA IN TABANAN REGENCY ABSTRACT The implementation of irrigation network improvement project in Sungi River Watershed is quite complex because it is related to water regulation system by water user farmer association (subak). In the implementation there are various risks that may affect the cost, quality and timing of the project. The purpose of this study was to identify risks, assess and determine the acceptance of risk, determine the dominant risk and mitigation actions and risk ownership for the dominant risk. The research was conducted in the Irrigation Areas (IA) of Cangi, Bunyuh, and Baru Kedokan with a combination method (quantitative and qualitative descriptive). The data collection was done by distributing questionnaires to respondents directly involved in the project implementation. The number of respondents was 20 people and selected by purposive sampling. The results showed identified risks of 36 risks with 14 risks of previous research outcomes and 22 risks from brainstorming results. The risk assessment and acceptance results were categorized as undesirable 52.78%, acceptable 33.33%, negligible 13.89%, and no risk was found in the category of unacceptable. Mitigation was conducted on the undesirable risks by making changes to the initial design plan in accordance with the field conditions, intensifying the implementation of the supervision in the field and carrying out the work in accordance with the operational standards and procedures contained in the contract. The ownership of risk was allocated to the parties involved in the project implementation including job owners 8 risks, supervisory consultants 9 risks, contractors 16 risks and farmer community 1 risk. The undesirable risk should be the concern of the parties involved in the project so that the final results of the work were in accordance with quality, cost, and time planned.

MANAJEMEN RISIKO OPERASIONAL DAN PEMELIHARAAN TEMPAT PEMBUANGAN AKHIR (TPA) REGIONAL BANGLI DI KABUPATEN BANGLI I W Wedana Yasa; I G. B Sila Dharma; I Gst Ketut Sudipta
JURNAL SPEKTRAN Vol 1, No 2, Juli 2013
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

To obtain the maximum and sustainable advantage it needs to carry out the operational and maintenance (OP) activities of TPA. It is necessary to maintain the Bangli Regional TPA so that it will give maximum and sustainable advantages. This study was aimed at identifying various major risks which may interfere with the TPA operating and maintenance so that mitigation can be done and to determine the risk ownership. The collected data were analyzed using descriptive qualitative method through the following stages: the risks were identified, the risks were evaluated, the risks were coped with, and the risk ownership could be identified. The risks identified totaled 72 consisting of: 9 (12.5%) risks which were under the unacceptable category, 16 (22.22%) risks which were under the acceptable category, and 1 (1.39%) risk which was under the negligible category. The major risks amounted to 55 risks (76.39%), included the obstacle to establishing the institution which was fully responsible for the operating and maintenance of the Bangli Regional TPA, the limited amounts of funds allocated by the central government, the provincial government, and the regency governments which were integrated into the Regional TPA, the obstacle to creating an affiliation between the government and the private institutions, and other risks. The risk mitigation was done by avoiding risks, reducing risks, and transferring risks starting from the institutional, regulation and financial aspects, and technical and non technical problems. Most risk ownerships were the responsibility of the Bangli Regional TPA management.

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