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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 453 Documents

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Preliminary Report on the Effect of Pre-Boring on the Mobilized Friction Capacity of Pile Foundation Hydraulically Jacked into Expansive Soil Gogot Setyo Budi
Civil Engineering Dimension Vol. 17 No. 1 (2015): MARCH 2015
Publisher : Institute of Research and Community Outreach - Petra Christian University

Pre-drilling was performed to reduce lateral earth pressure generated by pile foundation hydraulically jacked into expansive soil. Nineteen prestressed-precast spun concrete pile with diameter of 800 mm were penetrated into expansive soil up the depth of 40 m. Pre-drilling with diameter of 700 mm was carried out up to the depth of 12.5 m. Penetration loads required to install the piles, which was displayed on the built-in pressure panel, were recorded every 1 m interval. The load that was consisted of merely shaft friction was then used to find out the mobilized skin friction between pile shaft and its surrounding soils. The calculated mobilized skin friction was correlated to the value of Standard Penetration Test (NSPT) and compared to Decourt formula. The result shows that skin friction calculated using Decourt formula relatively conservative compared to those determined from the records of field penetration. The upper bound of mobilized skin friction can be defined by modifying Decourt formula.

The Effects of Different Curing Methods on the Compressive Strength of Terracrete J. A. Ayangade; O. Alake; A. B. Wahab
Civil Engineering Dimension Vol. 11 No. 1 (2009): MARCH 2009
Publisher : Institute of Research and Community Outreach - Petra Christian University

This research evaluated the effects of different curing methods on the compressive strength of terracrete. Several tests that included sieve analysis were carried out on constituents of terracrete (granite and laterite) to determine their particle size distribution and performance criteria tests to determine compressive strength of terracrete cubes for 7 to 35 days of curing. Sand, foam-soaked, tank and open methods of curing were used and the study was carried out under controlled temperature. Sixty cubes of 100 × 100 × 100mm sized cubes were cast using a mix ratio of 1 part of cement, 1½ part of latrite, and 3 part of coarse aggregate (granite) proportioned by weight and water – cement ratio of 0.62. The result of the various compressive strengths of the cubes showed that out of the four curing methods, open method of curing was the best because the cubes gained the highest average compressive strength of 10.3N/mm2 by the 35th day.

ANALISIS KEPUASAN PENGHUNI DAN PERANAN ENVIRONMENTAL INFLUENCES INDIVIDUAL CONSUMERS DAN MARKETER STIMULI PADA KONDOMINIUM MEWAH DI SURABAYA Timoticin Kwanda; Hasan Oetomo
Civil Engineering Dimension Vol. 4 No. 1 (2002): MARCH 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

The occupancy rate of luxurious condominiums in Surabaya keep on decreasing. There are many reasons for these problems, among others economic crisis that weakened market-buying capability (external) and decreased preferences to reside (internal). The internal factor comprises of occupant’s satisfaction, environmental influences, individual consumers and marketer stimuli. The purpose of the research is to know according to the assessment of the occupants which of these four factors, is higher and more dominant. The occupants surveyed are the occupants of the luxurious condominiums in Surabaya, such as Paragon, Beverly, Puri Matahari, Regency, Graha Famili, and Puri Darmo. Samples were taken with Purposive Sampling method and collected through questioners. Anova is used to analyse the data with SPS 2000 program. The result showed that there are no significant differences of occupant’s satisfaction, environmental influences, individual consumers and marketer stimuli on the six observed condominiums. Meanwhile according to the mean, occupant’s satisfaction, individual consumers and marketer stimuli are dominant at Puri Matahari, and environmental influences are dominant at Puri Darmo. Abstract in Bahasa Indonesia : Tingkat hunian kondominium mewah di Surabaya terus menurun tajam. Hal yang menjadi penyebabnya antara lain krisis ekonomi yang memperlemah daya beli pasar (eksternal) dan menurunnya minat menempati (internal). Faktor internal adalah kepuasan penghuni, environmental influences, individual consumers dan marketer stimuli. Penelitian ini bertujuan untuk mengetahui penilaian penghuni kondominium mewah di Surabaya, yaitu Paragon, Beverly, Puri Matahari, Regency, Graha Famili, dan Puri Darmo terhadap keempat faktor ini. Ingin diketahui faktor mana yang lebih tinggi dan lebih dominan peranannya. Pengambilan sampel menggunakan metode Purposive Sampling dengan pengumpulan data melalui kuesioner. Analisis data menggunakan Anova dengan program SPS 2000. Hasil analisis menunjukkan bahwa tidak ada perbedaan yang signifikan antara faktor kepuasan penghuni dan peranan environmental influences, individual consumers dan marketer stimuli pada keenam kondominium. Sedangkan berdasarkan rerata diketahui bahwa faktor-faktor kepuasan penghuni, individual consumers, dan marketer stimuli dominan pada Puri Matahari, dan faktor environmental influences dominan pada Puri Darmo.

Applying Fuzzy Analytic Hierarchy Process (FAHP) -Cut Based and TOPSIS Methods to Determine Bali Provincial Road Handling Priority Wedagama D.M.P.; Frederika A.
Civil Engineering Dimension Vol. 13 No. 2 (2011): SEPTEMBER 2011
Publisher : Institute of Research and Community Outreach - Petra Christian University

The Analytic Hierarchy Process (AHP) method has been employed in a previous study to determine Bali provincial road handling priority. This method usually overlooks the decision maker’s degrees of confidence and optimism of the decision. Meanwhile, Fuzzy Analytic Hierarchy Process (FAHP) -cut based and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods allow the researcher to estimate the overall road handling priority considering on degrees of confidence and optimism of the decision. The present study aims at determining Bali provincial road handling priority using FAHP -cut based and TOPSIS methods. The current study shows that decision makers’ degree of confidence in both pessimistic and moderate situations and optimism from certain to the most uncertain conditions suggesting the same road link as the highest priority compared to the previous study. Both current and previous studies also conclude the same road link as the lowest road handling priority.

TESTING HARDENED CONCRETE USING THE MATURITY CONCEPT George Ilinoiu
Civil Engineering Dimension Vol. 5 No. 1 (2003): MARCH 2003
Publisher : Institute of Research and Community Outreach - Petra Christian University

The paper provides an overview of different methods that can be used for concrete maturity determination, outlining Romanian Concrete Code Specification (NE 012-99) in relation to using an effective and rational method in evaluating in-situ concrete strength at different ages.

Effect of Temperature on Precipitation Rate of Calcium Carbonate Produced through Microbial Metabolic Process of Bio Materials Prima Yane Putri; Keiyu Kawaai; Isao Ujike; Saya Yamamoto
Civil Engineering Dimension Vol. 18 No. 2 (2016): SEPTEMBER 2016
Publisher : Institute of Research and Community Outreach - Petra Christian University

Concrete is the most widely used construction material in civil engineering. But plain concrete is a brittle material and has little resistance to cracking. The cracking in concrete promotes deterioration such as the corrosion of reinforcing rebar, therefore, repair in filling the crack is often carried out. Recently, repair methods using bio-based materials associated with microbial metabolic processes leading to precipitation of calcium carbonate have been intensively studied. In this study, influencing factors on the precipitation rate depending on the constituents of bio-based material comprising yeast, glucose and calcium acetate mixed in tris buffer solution was examined for improving the rate of initial reactions. In addition, effect of temperature change on the amount of calcium carbonate precipitation was also investigated. The precipitates were identified by X-ray diffraction. It was shown that the increase of temperature lead to a change on calcium carbonate precipitation and caused the pH decrease under 7.0.

Estimation of Congestion Cost of Private Passenger Car Users in Malioboro, Yogyakarta Sugiyanto G.; Malkhamah S.; Munawar A.; Sutomo H.
Civil Engineering Dimension Vol. 12 No. 2 (2010): SEPTEMBER 2010
Publisher : Institute of Research and Community Outreach - Petra Christian University

Congestion is the condition when the hourly traffic demand exceeds the maximum sustainable hourly throughout of the link. The aim of this research is to estimate the congestion cost of private passenger car users in central business district along the corridor of Malioboro, Yogyakarta, Indonesia. The amount of the congestion cost is the difference between perceived and actual generalized cost in traffic jam condition. In this paper, only the congestion costs of private passenger car users are estimated, as they are expected to shift to buses. The generalized costs from origin zone i to destination zone j consist of vehicle operating cost, travel time cost, and pollution cost. This study shows that while the perceived generalized cost for private cars at Central Business District (CBD) Malioboro is IDR 3101.00 per trip, the actual generalized cost in traffic jam condition is IDR 5802.00 per trip, giving the estimation of congestion cost in CBD Malioboro for private passenger car users as IDR 2701.00 per trip.

DAYA DUKUNG ULTIMIT PONDASI DANGKAL DI ATAS TANAH PASIR YANG DIPERKUAT GEOGRID Pontjo Utomo
Civil Engineering Dimension Vol. 6 No. 1 (2004): MARCH 2004
Publisher : Institute of Research and Community Outreach - Petra Christian University

This research was conducted to compare the ultimate bearing capacity of square footing and strip footing rested on geogrid-reinforced sand via model test in the laboratory. The parameters studied were the top layer depth of geogrid below the footing (u), vertical spacings of geogrid layers (z) and the depth of the deepest geogrid layer (d) below the footing. For both square and strip footing, the value of u/B = 0.25-0.5 (B = width of footing) can give benefit to the ultimate bearing capacity of sand up to 2.5-3.5 times greater than unreinforced sand. On the value of z/B = 0.5, on the square footing case, could increase the bearing capacity up to 3.5 times bigger than unreinforced sand, while on the strip footing, z/B = 0.25 increase the ultimate bearing capacity up to 2.5 times greater than unreinforced case. At the value of d/B = 1.5, both square and strip footing could give benefits which amplified the ultimate bearing capacity up to 5 times and 3 times bigger than unreinforced sand respectively. Abstract in Bahasa Indonesia : Penelitian ini dilakukan untuk membandingkan kapasitas daya dukung ultimit pondasi bujur sangkar dan pondasi lajur yang berada di atas tanah pasir yang diperkuat geogrid melalui uji model di laboratorium. Parameter yang diteliti meliputi efek letak lapisan geogrid teratas (u), efek spasi geogrid (z) dan efek letak lapisan terbawah (d) dari geogrid terhadap kenaikan daya dukung ultimit pondasi. Untuk model pondasi baik bujur sangkar maupun lajur, nilai u/B = 0.25-0.5 (B = lebar pondasi) mampu meningkatkan daya dukung ultimit hingga 2.5-3.5 kali daya dukung ultimit tanah pondasi tanpa perkuatan. Nilai z/B = 0.5 pada pondasi bujur sangkar memberikan kenaikan daya dukung hingga 3.5 kali lipat dan pondasi lajur, nilai z/B = 0.25 memberikan kenaikan daya dukung hingga 2.5 kali lipat. Nilai d/B = 1.5, pada pondasi bujur sangkar dan lajur mampu menaikkan daya dukung tanah pondasi hingga 5 kali lipat dan 3 kali lipat dibanding tanah tanpa perkuatan.

Managerial Skills for Managing Construction Safety Riza Yosia Sunindijo; Patrick X.W. Zou; Andrew Dainty
Civil Engineering Dimension Vol. 19 No. 2 (2017): SEPTEMBER 2017
Publisher : Institute of Research and Community Outreach - Petra Christian University

Previous research has suggested that self-awareness, visioning, and sincerity are foundational managerial skills for delivering positive safety outcomes in construction projects. This paper aims to verify this finding and to suggest learning approaches for developing these skills in practice. Interviews with experienced construction practitioners were analysed thematically to find common themes. The thematic analysis confirms the necessity of the managerial skills identified in the previous research for managing construction safety and provides directions for construction organisations to improve safety learning. Existing approaches, which mainly adopt the cognitivism learning philosophy, may not be sufficient because the nature of learning in practice aligns with social constructivism, showing that learning occurs informally through interactions with people and artefacts at work instead of in a classroom-structured environment. Furthermore, although learning methods to develop safety skills have been suggested, there remains a need for better statistical evidence of the effectiveness of these methods in delivering safety outcomes.

Generalized Fragility Relationships with Local Site Conditions for Probabilistic Performance-based Seismic Risk Assessment of Bridge Inventories Lau, D.T.; Vishnukanthan, K.; Waller, C.L.; Sivathayalan, S.
Civil Engineering Dimension Vol. 14 No. 3 (2012): Special Edition
Publisher : Institute of Research and Community Outreach - Petra Christian University

The current practice of detailed seismic risk assessment cannot be easily applied to all the bridges in a large transportation networks due to limited resources. This paper presents a new approach for seismic risk assessment of large bridge inventories in a city or national bridge network based on the framework of probabilistic performance based seismic risk assessment. To account for the influences of local site effects, a procedure to generate site-specific hazard curves that includes seismic hazard microzonation information has been developed for seismic risk assessment of bridge inventories. Simulated ground motions compatible with the site specific seismic hazard are used as input excitations in nonlinear time history analysis of representative bridges for calibration. A normalizing procedure to obtain generalized fragility relationships in terms of structural characteristic parameters of bridge span and size and longitudinal and transverse reinforcement ratios is presented. The seismic risk of bridges in a large inventory can then be easily evaluated using the normalized fragility relationships without the requirement of carrying out detailed nonlinear time history analysis.

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