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All Journal Jurnal Teknik ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science KERN Jurnal Teknobisnis Journal of Civil Engineering Journal of the Civil Engineering Forum Simposium II UNIID 2017 IJEBD (International Journal Of Entrepreneurship And Business Development) Jurnal Aplikasi Teknik Sipil Jurnal Sosial Ekonomi Pekerjaan Umum Dimensi Utama Teknik Sipil Makara Journal of Technology Sewagati

Christiono Utomo

Departemen Teknik Sipil Institut Teknologi Sepuluh Nopember

Author-ID : 2777245

Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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AGREEMENT OPTIONS FOR VALUE-BASED GROUP DECISION ON BUILDING SYSTEM SELECTION Christiono Utomo
Journal of Civil Engineering Vol 30, No 2 (2010)
Publisher : Institut Teknologi Sepuluh Nopember

This paper presents a conceptual model of agreement options on negotiation support to facilitate the solving of group choice decision making problems in civil engineering. Group decision in construction is very complicated since many parties involved. Where a number of stakeholders are involved in choosing a single alternative from a set of solution alternatives, there are different concern caused by differing preferences, experiences, and background. Such civil engineering solutions as alternatives are referred to as agreement options, this paper describes a process of group decision and negotiation on building system selection for highway guardrail by assuring safety to provide barrier. The decision consists of three alternatives solution, three stakeholders and ten criteria. Determination of the optimal solution is based on a game theory model of n-person general sum game with complete information that involves forming coalitions among stakeholders.

VALIDATION OF A SUPPORT SYSTEM ON BUILDING SYSTEM SELECTION IN CONSTRUCTION Christiono Utomo
Journal of Civil Engineering Vol 30, No 1 (2010)
Publisher : Institut Teknologi Sepuluh Nopember

Decisions for multi-person on building system selection are very complicated since many parties involved. Where a number of stakeholders are involved in choosing single alternative from a set of alternatives, there are different concern caused by differing preferences, experiences, and background. Therefore, a support system is required to enable each stakeholder to evaluate and rank the solution alternatives before engaging into negotiation. This paper presents a validation process of the negotiation support system in building system selection. A case study was carried out in a real estate company in Indonesia. Validation was conducted to a framework of coalition formation as a basis algorithm of negotiation support for building system selection in construction. Two methods of validation were conducted in a group decision to select building roof system. These methods are decision result validation by similarity index and stakeholder preferences validation by canonical correlation analysis and a set of descriptive statistic analysis. Two others conventional model were compared with the coalition formation algorithms. This validation process reveals that the algorithms proposed is better than single weight factor and aggregation method in terms of closely to the best fit option, stakeholder satisfaction, and performance of the model.

Probability Scale of Vessel Risks on a Shipping Company Shahro Muttaqin; Christiono Utomo
IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i1.7991

Indonesia as one of the biggest maritime country in the world, makes sea transportation an important mode of transportation in Indonesia. A sea transportation is a vessel owned by a shipowner or shipping company. The owners have responsibilities in the operation of vessels and its cargos. Shipowners barely understand the risks that follow them on the sailing such as PT X. This private company is one of shipping companies that has sailing route from Surabaya to west Indonesia. High level of vessel accidents in west Indonesia makes the Java Sea a risk-prone area by NTSC. This paper reports interview with PT X and validated by a marine expert to analyze risk factors in vessels. The method conducted was a survey to collect mean index data for probability risk analysis. It is identified that the highest probability of risk is caused by the lack of experiences from the crews, work accidents on the boat, high fuel cost and others. Hence, this report concludes that this examination of risk probability of ship events to a ship company shows types of risk that have the highest probability in order to be mitigated so that the loss will be able to be reduced

The Effect of Green Building Application to Property Value Fitri Rahmawati; Purwanita Setijanti; Christiono Utomo
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

The green building concept is one of the solution for the next sustainable development. One of the biggest barriers is the feasibility of financial return. This research is conducted to determine the influence of the green building aspects application towards the property value of high rise building that seen from the design and material aspects in Surabaya. This study, conducted by a survey research using questionnaires for data collection, and regression analysis. There are ten aspects that its use may increase the property value, wich are the horizontal massing design, secondary skin, smart lighting systems, grey-water systems, green roof, lightweight concrete, photovoltaic systems, smart lighting systems, air conditioner with VRV systems, gray-water systems, Low-E glazing, low VOC paint wall, and green roof.

The Influence of Product and Facade Design towards Its Selling Price Imanuel Mbake; Christiono Utomo; Purwanita Setijanti
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Pricing become one of determinant variable of consumer preferences to product and design of a house. When the selling price of a house is highest than the buying power of consumer, then the number of its demand was go down. Conversely, when the selling price of house could reachable by consumer buying power, then the number of its demand increased. This research is the preliminary research from advanced research to investigate the marginal pricing of Perumahan Pondok Indah Matani. By literature reviews and cost calculation methods, it is found that there were three (3) aspect of product and facade design of house that influences to the selling price, namely cost of spouse and plastering walls, cost of door sills and windows; and wall-painting cost.

Highest and Best Use for Mall’s Motorcycle Parking Area Surabaya Rafael Dani Kusuma; Christiono Utomo
IPTEK Journal of Proceedings Series No 3 (2020): International Conference on Management of Technology, Innovation, and Project (MOTIP) 2
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i3.11135

Property growth for residence, office building, and other uses is increasingly higher. This results in the development plan for a land that can change along with changes in its surroundings. Therefore, an analysis is needed to determine the utilization of land so that it can produce alternative properties with the highest income and land value. This research uses the Highest and Best Use (HBU) method to analyze Tunjungan Plaza parking area to the best and highest use of a land which was originally a parking lot. This research begins with an analysis of land development trends around the location and the respondent/stakeholders analysis through questionnaire and interview techniques to formulate which type of property and development that will be analyzed by the Highest and Best Use method. From the results from the identification of alternative land uses, five alternative developments using the mixed-use building consisting of apartment-hotel and office-apartment systems were obtained. From the results of the analysis conducted, the highest value of land productivity was obtained by developing land with mixeduse building system which consists apartment (50%) - hotels (50%) that gives enhancement the land value of Rp. 463.051.849, - / m2 or an increase of 1.267,25 % from before development was conducted.

Sensitivity Analysis to Determine the Prospect of Tollroad Investment: Case Study Krian-Legundi-Bunder-Manyar Tollroad Yusuf Hartoyo; Christiono Utomo
IPTEK Journal of Proceedings Series No 1 (2020): The 1st International Conference on Business and Engineering Management (IConBEM)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2020i1.8460

PT Waskita Bumi Wira as the Toll Road Business Entity (BUJT) is investing in the Krian-Legundi-Bunder-Manyar Toll road with a viability gap fund (VGF) scheme. In the 2016 Toll Road Concession Agreement (PPJT) between BPJT-BUJT-PII, several acceptable investment variables have been agreed, namely: total investment value = Rp12,224,389,000,000, average daily traffic volume (LHR) = 21,874 vehicle / day, loan interest = 12.5%, toll tariff for group 1 = Rp1,250 / km, internal rate of return on equity (IRRonEquity) = 17.64%, payback period of 14 years and net present value (NPV) = Rp. 3,731,695,000,000. During the construction, there was a design change and a delay in land acquisition, this causes cost overrun. With a concession period of 45 years, inaccurate risk factors in the prediction of traffic volume growth rates, specific and non-specific risk factors and other uncertainties greatly affect the investment prospects. Therefore investment needs to be reviewed before this toll road is divested in 2025 by sharpening the minimum attractive rate of return (MARR) and LHR variables, then comparing them with the initial business plan. The estimated selling price of the divestment is also examined in this study. The investment valuation criteria that will be used in the sensitivity analysis are NPV and IRRonEquity. The approach in determining MARR is the use of MARRpremium = 15.81%. Sensitivity analysis with a deterministic approach is carried out to obtain limits on changes in investment costs, land acquisition costs, LHR traffic, loans (syndicated loans) to NPV in several tariff scenarios. This research shows that the NPV value is very sensitive to changes in investment costs. It is also known that in the toll tariff scenario according to PPJT compensation can be given in one of the conditions: investment costs increase by more than 7%, LHR traffic is less than 75%, or an increase in loans (syndicated loans) of more than 9%. The analysis of the stochastic approach shows that the probability of not exceeding the investment budget revenue limits due to changes of 37.29% to 46.56%.

Factors of Design Errors in Construction Project (A Review) Dedy Farhan Fuadie; Yani Rahmawati; Christiono Utomo
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Design is an important step in construction project. Errors in design cause failure in construction stage as well as the project development. Misunderstandings of design concept between parties lead to design errors that able to decrease the quality of construction works, and also cause cost overruns and project delays. Design errors also contribute to engineering failures, which can result in accidents and loss of life. Preventive actions in reducing the errors are necessary. In accordance with these issues, this research is conducted with main purpose to identify the causal factors of design error. Review to previous studies with main topic of design error was taken in order to identify the causal factors. The factors were then validated in an oil and gas industry through observation in design process and also interview to parties whom have experiences in design process. Based from research, it is found that there are 5 main causal factors. The factors are man, method, material, machine, and environment. There are also several factors that are less in accordance with the conditions in the field such as cognitive dissonance, competitive tendering, and adversarial attitudes. By knowing the cause of the design error, can be done to prevent the effort of guarantee project sustainability.

Collaborative Decision for Building Energy System on Traditional Markets in Urban Areas Christiono Utomo; Yani Rahmawati; Nugroho Priyo Negoro
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

It becomes more important to design energy-efficient for buildings. This is true in relationship to a public building design especially retail property such as traditional market. It calculates the use of energy during construction and operation. There are three alternatives for a building energy system which are passive energy, electrical equipment, and user processes. The alternatives are developed for a public commercial retail. They were selected by four stakeholders named government, tenant, designer, and property manager. It is not easy to make a decision where there are many stakeholders' interests. A decision support system is necessary. The system should support a collaborative process among decision makers. This paper presents a multi criteria and multi person decision process to develop agreement options and coalition formation to find the best fit option of the energy system for traditional markets building in urban areas. There are three stages involved in the process which are first is determining and scoring of every alternative for every stakeholder, second is determining the optimal solution (payoff optimum) for each stakeholder in a coalition, and third is analyzing the best fit options for every coalition and grand coalition. An analytical hierarchy process (AHP) based on satisfying option is applied for the first stage. A liner programming is used to determine payoff optimum in the stage two and an agent system based on game theory built the coalition algorithm on the stage three. The result shows a model of collaborative decision to select a building system at design process.

A Review on Maximum Productivity of Land Use in Urban Project Development Herlambang Sucahyo; Yani Rahmawati; Christiono Utomo
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2017i6.3286

The Regional Budget Fiscal Year of Surabaya in 2017 is IDR 8,561,848,147,400, where Regional Revenue (PAD) is projected as much as IDR 4,212,569,176,921 along with Regional Wealth Management IDR 166,311,576,799. That revenue is derived from the activity of managing land asset. The total assets of Surabaya is currently 60,115,651.23 m2, where 84% of the area already has its land use, and 937,911.35 m2 or 0,56% is used for commercial use. Some of the assets are not optimally used for PAD yet. The city loses its opportunity in gaining maximal revenue because the assets are not developed properly, where the assets are mostly located in the main corridor of the city or primary artery. Highest and Best Use (HBU) analysis is found to be one of important technique in finding best alternative to be used in developing vacant land and existed improved property. This study analyzes the HBU practices in developing the government assets of Surabaya, especially the area that is placed near the riverside. Literature review and in depth interview to stakeholders are used to obtain data. The data is then analyzed by using descriptive analysis. Based on analysis, it is found that mixed use commercial building come out as best alternative in developing the assets.

Co-Authors A. Idrus Adelia Munawaroh Adi, Trijoko Wahyu Agin Abduh Khaer Ahyudanari, Ervina Akmaluddin Akmaluddin Ananda Yogi Wicaksono Andini Prastiwi Andriani O. F. D. Angga Hermawan Anita Maulanasari Anita Trisiana Anwar, Nadjadji Arazi Idrus Aristia A. Putri Azizah, Urifatul Bangun Muljo Sukojo, Bangun Muljo Bidaruni Anggarawati Bobby Yerikho Cahyono Bintang N Cahyono Bintang Nurcahyo Chairun Nisya Aziz Christsanto Wijaya Dea Deliana Dedy Farhan Fuadie Devina, Reta Sandra Dharmika, Tubagus Ihsan Aria Diah Listyaningsih Dian Pararta Laksmi Dina Yunanda Dwisa Rizki Hanundyasari Endarko Endarko Erwin Ready Fahad Fahad Farida Murti Farida Rachmawati Farida Rachmawati, Farida Fenny Herwitasari Finda Virgitta Faradiany Fitri Rahmawati Friskarindi Noor Wakhidah Gilbert Alexander Gladys, Ernesty Alvita Gracea Elyda Safaret Sembiring Herimurtti Paramastya Manggala Herlambang Sucahyo I Putu Artama Wiguna Imam Safawi Ahmad, Imam Safawi Imanuel Mbake Indriyani, Retno Indryani, Retno Indryani, Retno Jani Rahardjo Jani Rahardjo Karmila Sari Kevin Christopher Halim Kevin Kevin Lukas Adiputra M. Arif Rohman M. Arif Rohman M. Arif Rohman M. Awallutfi Andhika Putra Made Darmawan Saputra Mahardika Made Dwiyanti Purnama Ningsih Maranatha Wijayaningtyas Marsha S Mustika Marsha Swalia Mustika Maulida Herradiyanti Megawe, Lita Dewi Sandrita Mifta Afiata Mifta Afiata Miftahul Mubayyinah Mochammad Zainuri Mohammad Ryan Rama Albertino Muchamad Faridz Hidayat Muhammad Altof Syahrizal Muhammad Rofiq Dewaji N.A. Rahman Nasychun Amin Ni Putu Kurnia Utami Njo Anastasia Nugrahari, Defira Rifkiani Nugroho Priyo Negoro Nurcahyo, Cahyono Bintang Nuriyah Irkham NYOMAN DITA PAHANG PUTRA, NYOMAN Ofianto Ofianto Wahyudhi Pangestu, M. Agus Paulus Pati Richardo Tenawaheng Pratiwi, Nadiar Purwanita Setijanti Putri, Yusronia Eka Rachma Rachma Damayanti Rafael Dani Kusuma Rahmawati Cahyaningsih Ramadhan Firmansyah Marsetyo Retno I Retno Indriyani Retno Indryani Retno Indryani Rina Nufaili Rintih P A Kasih Rintih Prastianing Atas Kasih Rizki Andini Rohman, Mohammad Arif Rohman, Mohammad Arif Salsabilla Aliza Putri Pambudi Setiawan, Nanang Shahara Nur Laila Shahro Muttaqin Siti Nur Sarah Nur Mayangsari Soedarso Soedarso Soedarso Sofia Hendrastuti Sulfiah Dwi Astarini Supani Supani Surios Ramisda Susanto, Ifan Syaifuddin Zuhri T.Defi Anysa Rasyid Tri Joko Wahyu Adi Triogo Utomo Trixy Firsani Utut Oryza Septiantoro Wahyu Ika Aprilia Waliulu, Yusroniya Eka Putri Rachman Wibowo, Agung Aryo Yani Rahmawati Yani Rahmawati Yani Rahmawati, Yani Yomelda Yomelda Yuni Ulfiyati Yusronia Eka Putri Yusroniya E. P. R. W Yusroniya Eka Putri Yusuf Hartoyo Zulfia Putri Maulina

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