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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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APLIKASI BAMBU PILINAN SEBAGAI TULANGAN BALOK BETON Jauhar Fajrin Pathurahman; Dwi Anggraini Kusuma
Civil Engineering Dimension Vol. 5 No. 1 (2003): MARCH 2003
Publisher : Institute of Research and Community Outreach - Petra Christian University

Reinforcing steel is a nonrenewable mining product. In order to solve this problem, bamboo, which is cheap and has a fairly high tensile strength, could be used as an alternative. In this study, bamboo is used to reinforce concrete beam. The beams are designed under reinforced with no compression reinforcement. All beams are reinforced with 12 mm bamboo Galah protected with water resistant layer. A four-point load test set up is used to ensure pure bending. The test results show that the average value of first crack moment is 15.26 % bigger compared with the calculated moment. This indicates that there is a reasonable agreement between experimental and theoretical results. The standard deviation (35,31 %) indicates that the quality of bamboo used in this study is not uniform. It could be concluded that, there is a possibility to use bamboo to replace steel as reinforcement, particularly for simple concrete structures. Abstract in Bahasa Indonesia : Baja tulangan adalah produk hasil tambang yang keberadaannya suatu saat akan habis. Untuk mengatasi problem tersebut, sebagai alternatif dicoba pemakaian tulangan bambu yang murah dan berkekuatan tinggi. Pada penelitian ini bambu digunakan sebagai tulangan balok beton, balok direncanakan bertulangan liat (underreinforced) dan tidak bertulangan tekan, semua balok diberi tulangan bambu pilinan dari bamu galah dengan diameter 12 mm dan diberi lapisan kedap air. Pengujian dilakukan dengan menggunakan metode four point load, sehingga pada bagian balok diharapkan akan terjadi lentur murni. Hasil penelitian menunjukkan bahwa nilai rata-rata perbandingan antara momen retak awal (eksperimen) dengan momen perhitungan (teoritis) sebesar 115.26 %, hal ini menunjukkan adanya kecocokan antara teori dan ekperimen. Simpangan standar yang cukup besar yaitu 35.31 % dapat diartikan bahwa kualitas tulangan kurang seragam. Disimpulkan bahwa bambu memiliki peluang untuk digunakan sebagai tulangan, khususnya untuk struktur beton sederhana

Implementation of Decision Support System for Integrated Coastal Zone Management of Sustainable Mariculture Development Industry in Indonesia Surya Hermawan
Civil Engineering Dimension Vol. 18 No. 2 (2016): SEPTEMBER 2016
Publisher : Institute of Research and Community Outreach - Petra Christian University

Indonesia has abundant and potential coastal resources for future development of mariculture industry activities. However, complex problem is found in the land and coastal zoneutilization, among others: coastal environment degradation, resources depletion, conflict and overlapping utilization of marine area. New perspective of Decision Support System (DSS) forintegrated coastal zone management (ICZM) can be used to solve this complexity with respect to the results of high resolution of hydrodynamic and wave numerical model, water quality, andICZM. The aim of this paper is to determine the suitable site for the implementation of sustainable future development of mariculture in Galang Island, Riau Province, Indonesia. Asuitability map of geographic information system based on ICZM is indicated by sixteen thematic maps. Implementations of the comprehensive ICZM of DSS criteria prove that GalangIsland has a bright potential of Grouper mariculture development industry by sustainable suitable area of about 12,940 hectares

Estimating the Influence of Accident Related Factors on Motorcycle Fatal Accidents using Logistic Regression (Case Study: Denpasar-Bali) Wedagama D.M.P.
Civil Engineering Dimension Vol. 12 No. 2 (2010): SEPTEMBER 2010
Publisher : Institute of Research and Community Outreach - Petra Christian University

In Denpasar the capital of Bali Province, motorcycle accident contributes to about 80% of total road accidents. Out of those motorcycle accidents, 32% are fatal accidents. This study investigates the influence of accident related factors on motorcycle fatal accidents in the city of Denpasar during period 2006-2008 using a logistic regression model. The study found that the fatality of collision with pedestrians and right angle accidents were respectively about 0.44 and 0.40 times lower than collision with other vehicles and accidents due to other factors. In contrast, the odds that a motorcycle accident will be fatal due to collision with heavy and light vehicles were 1.67 times more likely than with other motorcycles. Collision with pedestrians, right angle accidents, and heavy and light vehicles were respectively accounted for 31%, 29%, and 63% of motorcycle fatal accidents.

The Study of Liquefaction Time Stages due to a Short Duration Shaking Lindung Zalbuin Mase
Civil Engineering Dimension Vol. 19 No. 2 (2017): SEPTEMBER 2017
Publisher : Institute of Research and Community Outreach - Petra Christian University

During the 2006 Yogyakarta earthquake, liquefactions were massively found in Opak River, Yogyakarta, Indonesia. Learning from those events, an experimental study of liquefaction using shaking table was performed, especially to investigate the effect of short shaking duration to liquefaction potential. Several experimental tests were performed under varied accelerations (0.3g, 0.35g, and 0.4g) and vibration frequencies (1.4 Hz, 1.6 Hz, and 1.8 Hz), with a short shaking duration of 8 seconds. The liquefaction parameter used in this study was the excess pore water pressure ratio. The results revealed that liquefaction occurs in every loading criteria and the short shaking duration applied on each loading influences time stages of liquefaction, i.e. the liquefaction duration, the initial time of liquefaction, and the initial time of pore water pressure dissipation. In addition, the dynamic loads applied in a short duration influenced the maximum excess pore water pressure ratio.

Seismic Properties of Moment-resisting Timber Joints with a Combination of Bolts and Nails Awaludin A.; Hayashikawa T.; Oikawa A.; Hirai T.; Sasaki Y.; Leijten A.J.M.
Civil Engineering Dimension Vol. 13 No. 1 (2011): MARCH 2011
Publisher : Institute of Research and Community Outreach - Petra Christian University

Improvement of cyclic or dynamic performance of timber connections has been intensively conducted since the overall response of wooden structures is merely a function of joint performance. For a bolted joint, filling the lead-hole clearance with epoxy resin or gluing high embedding-strength materials at the interface of the individual timber member are probably the most common methods. This study presents cyclic test results of moment-resisting joints with a combination of bolts and nails. The nails were placed closer to the joint centroid than the bolts, acting as additional fasteners and were expected to improve the seismic performance of the joints. Static-cyclic test results confirmed the increase of joint stiffness and moment resistance due to the additional nails. The nails contribute to the increase of hysteretic damping significantly though pinching behavior or narrowing the hysteresis loops close to zero rotation points was still observed. The results indicated that contribution of nails or bolts on moment resistance and hysteretic damping can be superimposed.

THE INFLUENCE OF MOLDING WATER CONTENT AND LIME CONTENT ON THE STRENGTH OF STABILIZED SOIL WITH LIME AND RICE HUSK ASH Agus Setyo Muntohar
Civil Engineering Dimension Vol. 7 No. 1 (2005): MARCH 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

The strength gain of stabilized soils is not only influenced by the type and proportion of the stabilizers and its curing time, but also by the water content needed to maintain the reaction. The reaction of lime – RHA with soil is pozzolanic. Hence, the process will be subjected greatly by the amount of water to react with admixtures and the proportion of the stabilizer. This paper presents the result of a laboratory study on the unconfined compressive strength (UCS) of soils stabilized with lime and RHA, compacted at the OMC, and at the dry and wet side of OMC. The amount of lime required for stabilization (LRS) is determined by Eades and Grim's Method. The results showed that the water content determines the UCS characteristics of unstabilized and stabilized soils. The UCS of stabilized soils decreased with increasing molding water content, but it is still higher than of the un-stabilized soils. In general, higher lime content results to a higher UCS. The maximum strength of the stabilized soil is attained at lime/RHA ratio of 1/2. The UCS of the stabilized soil increased significantly about 7 – 9 times to the un-stabilized UCS.

Selecting Materials for Environmental-Friendly Buildings: The Need for Improved Environmental Impact Data Nachawit T.
Civil Engineering Dimension Vol. 14 No. 1 (2012): MARCH 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

Buildings of the future need to be more environmental-friendly. Selecting environmentally-benign materials in design stage would partly help achieving such goal. Examination of existing environmental impact data of building materials reveals that the data differ greatly from one source to another. Comparisons of environmental impact values of selected materials are presented. The sources that give rise to data variation are identified and discussed. The applicability of existing data is assessed from the designers’ perspective. Limitations of current practice in data acquisition and presentation are also discussed. It is concluded that existing environmental impact data of building materials are inconsistent and perplexing to designers. An alternative approach to data acquisition and presentation is to break the life cycle of building materials into several phases and to calculate the total impact value as the sum of the impacts of all phases. This would make the determination of the full life cycle value feasible and increase external validity of research results.

PENGARUH ELEKTROKINETIK TERHADAP DAYA DUKUNG PONDASI TIANG DI LEMPUNG MARINA Daniel Tjandra; Paravita Sri Wulandari
Civil Engineering Dimension Vol. 8 No. 1 (2006): MARCH 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

Electrokinetics is one of soft ground improvement methods to improve its bearing capacity. The objective of this research is to investigate the increase of friction and end bearing resistance of an embedded instrumented model pile in marine clay after electrokinetics treatment. The initial geotechnical properties of soil surrounding the pile foundation is obtained by several soil laboratory tests. For pile bearing capacity analysis, friction and end bearing resistance of pile was measured by load cell measuring device, while un-drained shear strength analysis was measured by vane shear test. The result of this research showed that after 24 hours electrokinetics treatment, the un-drained shear strength increased closer to the pile, and the bearing capacity of pile increased 14 times. Abstract in Bahasa Indonesia : Elektrokinetik adalah salah satu metode perbaikan tanah lunak yang diaplikasikan untuk meningkatkan daya dukung tanah lunak. Tujuan dari penelitian ini adalah untuk menyelidiki peningkatan tahanan friksi dan ujung suatu model pondasi tiang di lempung marina setelah dilakukan proses elektrokinetik. Karakteristik tanah pada kondisi mula-mula di sekitar pondasi tiang didapatkan dari beberapa pengujian di laboratorium. Untuk analisa daya dukung tiang, tahanan friksi dan ujung dari pondasi tiang diukur dengan alat pengukur load cell, sedangkan analisa kuat geser undrained diukur dengan pengujian baling-baling. Hasil penelitian menunjukkan bahwa setelah pada tanah dilakukan proses elektrokinetik selama 24 jam, daya dukung dari pondasi tiang meningkat 14 kali dan semakin dekat dengan tiang, kuat geser undrained juga semakin meningkat.

Torsional Strength Prediction of RC Hybrid Deep T-Beam with an Opening using Softened Truss Model Lisantono, A.; Besari, M.; Suhud, R.
Civil Engineering Dimension Vol. 15 No. 1 (2013): MARCH 2013
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper presents an analytical study to predict the torsional behavior of reinforced concrete (RC) hybrid deep T-beam with opening and to compare to the experimental results. The RC hybrid deep T-beam was cast with normal weight concrete web and light weight concrete flanges. Based on the Softened Truss Model and Bredt’s theory, a new equation was derived and proposed to show the relationship between compression strut of light weight concrete and normal weight concrete. Based on the experimental results of cracking angles and curvature equation of light weight concrete and normal weight concrete, a new equation was also proposed to show the relationship between strain diagram of light weight concrete and normal weight concrete. The analytical results show that the prediction of maximum torque capacity of the beams are close to the experimental results, except the prediction of twist angle which are larger than the experimental results.

A Study of Compressive Strength Characteristics of Laterite Sand Hollow Blocks Olugbenga Ata; Kolapo Olusola; Oludare Omojola; Abiodun Olanipekun
Civil Engineering Dimension Vol. 9 No. 1 (2007): MARCH 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper presents the results of experimental investigations carried out on partial replacement of sand with laterite as it affects the compressive strength of sandcrete hollow blocks. Two mix proportions (1:6 and 1:8) were used with laterite content varying between 0 and 50% at 10% intervals. Hand and machine compaction methods were used. Curing was done by sprinkling water on the specimens. The results showed that for each mix proportion and compaction method, the compressive strength decreases with increase in laterite content. Machine compacted hollow sandcrete blocks made from mix ratio 1:6 and with up to 10% laterite content is found suitable and hence recommended for building construction having attained a 28-day compressive strength of 2.07N/mm2 as required by the Nigerian Standards.

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