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Civil Engineering Dimension

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Published by Universitas Kristen Petra Surabaya

ISSN : 14109530 EISSN : 1979570X DOI : -

Core Subject : Engineering,

Civil Engineering, Building, Construction & Architecture

The Civil Engineering Dimension (Dimensi Teknik Sipil) is a refereed journal, published twice a year, in March and September.

Arjuna Subject : -

Articles 466 Documents

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THE USE OF OUTRIGGER AND BELT TRUSS SYSTEM FOR HIGH-RISE CONCRETE BUILDINGS Po Seng Kian
Civil Engineering Dimension Vol. 3 No. 1 (2001): MARCH 2001
Publisher : Institute of Research and Community Outreach - Petra Christian University

The outrigger and belt truss system is commonly used as one of the structural system to effectively control the excessive drift due to lateral load, so that, during small or medium lateral load due to either wind or earthquake load, the risk of structural and non-structural damage can be minimized. For high-rise buildings, particularly in seismic active zone or wind load dominant, this system can be chosen as an appropriate structure. This paper studies the use of outrigger and belt truss system for high-rise concrete building subjected to wind or earthquake load. Eight 40storey two dimensional models of outrigger and belt truss system are subjected to wind load; and five 60storey three dimensional models are subjected to earthquake load, analyzed and compared to find the lateral displacement reduction related to the outrigger and belt system location. For the two dimensional 40storey model, 65% maximum displacement reduction can be achieved by providing first outrigger at the top and second outrigger at the middle of the structure height. For the three dimensional 60storey structural model subjected to the earthquake load, about 18 % reduction in maximum displacement can be achieved with optimum location of the outrigger truss placed at the top and the 33rd level.

ANALISA STUDI TENTANG KEMITRAAN ANTARA PENGEMBANG DENGAN KONTRAKTOR Herry Pintardi Chandra
Civil Engineering Dimension Vol. 4 No. 1 (2002): MARCH 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Facing the competitive economic condition, partnering between developer and contractor in project construction is used as a modern business strategy. Partnering is a team in which participants can build partnership to develop a project. In this study, a survey to 25 developers and 20 contractors is conducted. Mean and Chi-Square Analysis is done using 6 partnering variables : (1) advantage of partnering, (2) disadvantage of partnering, (3) measures of success of partnering, (4) key element of partnering, (5) needs of partnering, and (6) partnering success. From the analysis of the 6 variables of partnering, it is found out that commitment (maximum mean 5.60) is very important in partnership Abstract in Bahasa Indonesia : Menghadapi kondisi ekonomi yang kompetitif ini, kemitraan antara pengembang dengan kontraktor pada proyek konstruksi dipakai sebagai strategi bisnis modern. Kemitraan adalah suatu tim di mana partisipan dapat membangun hubungan kerjasama untuk pengembangan sebuah proyek. Dalam penelitian ini didapatkan data survei dari 25 perusahaan pengembang dan 20 perusahaan kontraktor. Analisa Mean dan Chi-Square dilakukan dengan memakai enam variabel kemitraan yaitu: (1) keuntungan kemitraan, (2) kerugian kemitraan, (3) pengukuran kesuksesan kemitraan, (4) elemen kunci kemitraan, (5) kebutuhan kemitraan, (6) kesuksesan kemitraan. Hasil analisa data dari keenam variabel kemitraan tersebut, menunjukkan bahwa komitmen (mean maksimum 5.60) sangat penting dalam hubungan kemitraan, baik dari pihak pengembang maupun kontraktor, dimana kepercayaan dalam suatu kerjasama merupakan wujud nyata dari komitmen.

PREDIKSI WAKTU LAYAN BANGUNAN BETON TERHADAP KERUSAKAN AKIBAT KOROSI BAJA TULANGAN Agus Santosa Sudjono
Civil Engineering Dimension Vol. 7 No. 1 (2005): MARCH 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Concrete is known as a porous building material, this can causes materials outside the concrete mass infiltrate into the concrete. Concrete structures constructed around the beach/seashore tend to have deterioration problems due to salt attack. This paper discusses models to predict the service life of concrete structure based on the deterioration problems. The service life of concrete structure is divided into three periods. Period I is time needed by Cl−ion to infiltrate into concrete up to the surface of the reinforcement, period II is time needed by corrosion products to fill the transition zone pores, and period III is deterioration time. The value of parameters used in the proposed equations is derived from the result of experiments. Finally, the proposed equations were evaluated by the relationship between variations of depth of concrete cover, water cement ratio (W/C) and distance of structure from shore line with service life. It could be concluded that the results of the prediction is satisfactory. Abstract in Bahasa Indonesia : Beton dikenal sebagai bahan bangunan yang berpori. Sifat ini menyebabkan senyawa dari luar dapat berinfiltrasi ke dalam beton. Bangunan beton yang dibangun di sekitar daerah pantai/laut cenderung mengalami kerusakan akibat serangan garam klorida. Makalah ini mendiskusikan model untuk memprediksi waktu layan bangunan beton terhadap kerusakan akibat korosi baja tulangan. Waktu layan bangunan beton dibagi menjadi tiga periode. Periode I adalah waktu yang dibutuhkan oleh ion Cl− untuk melakukan infiltrasi sampai ke permukaan baja tulangan, Periode II adalah waktu yang dibutuhkan oleh senyawa hasil korosi untuk mengisi pori-pori yang ada di transition zone, dan Periode III adalah waktu kerusakan pada bangunan beton. Parameter-parameter yang digunakan dalam persamaan yang diusulkan ditentukan dari hasil pengukuran di laboratorium. Persamaan tersebut dievaluasi dalam hal hubungan antara variasi tebal selimut beton, water-cement ratio (W/C ), dan jarak bangunan dari pantai dengan waktu layan. Hasil prediksi waktu layan bangunan beton terhadap kerusakan akibat korosi baja tulangan dapat disimpulkan cukup memuaskan.

Study on Graphite Powder as Conductive Pigments for Impressed Current Cathodic Protection System using Carbon Fiber Reinforced Polymer Anode Gunawan Budi Wijaya; David Pratama Lays; Hongky Haodiwidjaya Tanto; Daniel Tjandra
Civil Engineering Dimension Vol. 21 No. 2 (2019): SEPTEMBER 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

The use of Carbon Fiber Reinforced Polymer (CFRP), for both strengthening material and anode for Impressed Current Cathodic Protection (ICCP) system, is being investigated. The focus of this study is to develop the epoxy that has good bond strength and electrical conductivity. Graphite powder is used as conductive pigments with percentage ranges from 7.5% to 17.5%. All specimens were partially submerged in 5% NaCl solution and induced with electrical current of 10 mA/m2 and 20 mA/m2 for 30 days. An average potential increase of 200 mV was recorded using half cell potential test. The application of 30 days ICCP up to current density of 20 mA/m2 did not affect the bond strength significantly and still complies with ACI recommendation. However, graphite content of more than 15% are found to be not workable and the bond strength is greatly reduced to less than 1 MPa This study concluded that the recommended graphite powder content shall be in the range of 10% to 15%.

PENERAPAN MANAJEMEN MUTU TERPADU PADA MATAKULIAH DI JURUSAN TEKNIK SIPIL Paulus Nugraha
Civil Engineering Dimension Vol. 2 No. 1 (2000): MARCH 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

Paper ini dimulai dengan aplikasi Manajemen Mutu Terpadu di perguruan tinggi, terutama di jurusan Teknik Sipil, dan terfokus pada aspek pembelajaran. Kualitas pendidikan tidak dapat ditunda sampai akhir semester. Upaya-upaya perbaikan mutu selayaknya dilakukan jauh lebih dini. Pola "Kuesioner Satu Menit" dan kelompok Gugus Kendali Mutu diterapkan pada satu matakuliah di Jurusan Teknik Sipil Universitas Kristen Petra pada tahun 1997. Hasil menunjukkan bahwa TQM sangat membantu dalam memperbaiki mutu pembelajaran. Dosen tahu bagian-bagian mana yang kurang jelas, dan segera dapat diperbaiki pada pertemuan berikutnya. Mahasiswa juga menjadi lebih siap dan lebih memberikan perhatian pada matakuliah. Mahasiswa menjadi lebih aktif dan berinisiatif dalam kegiatan kuliah, dan dalam bekerja berkelompok. TQM dapat memperbaiki kualitas kelas besar.

PREDIKSI PENGEMBANGAN VOLUME TANAH DI KAWASAN PIER Johanes Suwono
Civil Engineering Dimension Vol. 1 No. 1 (1999): MARCH 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

A study on swelling behavior had been conducted on the soil within the PIER industrial estate. It appeared that the swelling was due to the moisture deficiency in the soil, and not because of the existence of expansive clay minerals. Swelling pressures were obtained from oedometer tests on undisturbed samples, whereas for the overall heave the moisture deficit method was applied. By this method, a heave of 5 cm in average could be expected when swelling occurs. Abstract in Bahasa Indonesia : Dari hasil penyelidikan tanah yang menyeluruh di kawasan PIER telah diteliti apakah tanahnya termasuk expansif, serta berapa besar pengembangan dan tekanan yang diakibatkan olehnya. Ternyata tanah di kawasan ini mengembang akibat adanya defisiensi kadar-air. Tidak ada indikasi akan adanya mineral-mineral expansif. Besarnya tekanan akibat pengembangan ini diperoleh dari pengujian dalam alat oedometer, sedangkan besarnya pengembangan diperkirakan berdasarkan perbedaan kadar-air volumetrik. Dari perbedaan kadar-air volumetrik dapat diprediksi rata-rata besar pengembangan yang akan terjadi adalah sekitar 5 cm. Kata kunci : tanah expansif, pengembangan, defisiensi kadar air.

Seismic Vulnerability Maps of Ratu Agung District, Bengkulu City, Indonesia Lindung Zalbuin Mase
Civil Engineering Dimension Vol. 21 No. 2 (2019): SEPTEMBER 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

During the 8.6 Mw Bengkulu-Mentawai Earthquake Ratu Agung District was identified as an impacted area. This paper aims to deliver the seismic vulnerability based on geophysical observation. This study was initiated by performing the ambient noise measurement to obtain the geophysical characteristic, such as amplification and predominant frequency. Furthermore, the vulnerability index analysis was performed from the geophysical information collected from the investigation. To observe the tendency of ground damage during the earthquake, ground damages analysis is also performed. All results are depicted into the microzonation maps. The results showed that the amplification and predominant frequency on site are generally ranging from 3 to 5 and 5 to 8 Hz, respectively. The seismic vulnerability index in study area is up to 10-3. The results showed that during the Bengkulu-Mentawai Earthquake, the investigated sites could be possible to undergo crack settlement which can trigger massive sand boiling in the study area.

Assessing Risk Management Capability of Public Sector Organizations Related to PPP Scheme Development for Water Supply in Indonesia Pangeran M.H.; Pribadi K.S.; Wirahadikusumah R.D.; Notodarmojo S.
Civil Engineering Dimension Vol. 14 No. 1 (2012): MARCH 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

The success of Public Private Partnership (PPP) for water supply investment is inseparable from the capability of risk management of the parties within the project. This study investigates the risk management capability of Indonesian local public sector organizations that are potentially involved in PPP schemes for water supply. A risk management maturity model based assessment tool probing the culture, process, experience, application and partnership aspects is used in the survey. The model describes risk management capability in four levels (ad-hoc, initial, competent, excellent). The survey shows that their risk management capability is still in-average at the initial stage (level 2), meaning that the adopted risk management postures are mostly supported only by unstructured, ad-hoc and non-formal processes. The result of this study can help decision makers in choosing appropriate risk management methods and tools to be used by the local public authorities for managing risks in PPP schemes.

PEMS-on board and E3 Modeling: A Comparison between Real-World Measurement and Emissions Estimates from Construction Equipment Apif M. Hajji M. Hajji; Aisyah Larasati; Michael P. Lewis; Huang Yue
Civil Engineering Dimension Vol. 21 No. 2 (2019): SEPTEMBER 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

Vehicles in construction industry are typically powered by diesel engines and are considered to be an off-road source of air pollution. Air pollutant emissions include nitrogen oxides (NOx), particulate matter (PM), hydrocarbons (HC), and carbon monoxide (CO). Any engine that combusts a nonrenewable carbonaceous fuel will have net emissions of carbon dioxide (CO2). Economic-Energy-Environmental (E3) model, a statistical-modeled tool, is developed by combining a multiple linear regression (MLR) approach for modeling equipment productivity with the emissions calculation algorithm from Environment Protection Agency (EPA)’s NONROAD model. This paper compares emissions data between the field data to E3 model outputs, and determines the similarity of the two sources of fuel use data. It is expected the two data are not narrowly similar since the field data are for individual vehicles, while E3 results are based on NONROAD model, which was intended to estimate average fuel use for a fleet of Heavy-Duty Diesel (HDD) equipment.

Effect of Rigidity of Plinth Beam on Soil Interaction of Modeled Building Frame Supported on Pile Groups Ravi Kumar Reddy, C.; Gunneswara Rao, T.D.
Civil Engineering Dimension Vol. 16 No. 1 (2014): MARCH 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper presents the effect of rigidity of plinth beam on a model building frame supported by pile groups embedded in cohesionless soil (sand) through the results of static vertical load tests. The effect of rigidity of plinth beam on displacements and rotation at the column base and also shears and bending moments in the building frame were investigated. In the analytical model, soil nonlinearity in the axial direction is characterized by nonlinear vertical springs along the length of the pile (t-z curves) and at the tip of the pile (Q-z curves) while in the lateral direction by the p-y curves. Results revealed that, shear force and bending moment values which were back calculated from the experimental results, showed considerable reduction with the reduction of the rigidity of the plinth beam. The response of the frame from the experimental results is in good agreement with that obtained by the nonlinear finite element analysis.

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