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Civil Engineering Dimension
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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Analysis of Journey to Work Travel Behavior by Car and Bus in the Sydney Metropolitan Region Suthanaya P.A.
Civil Engineering Dimension Vol. 13 No. 1 (2011): MARCH 2011
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (491.61 KB) | DOI: 10.9744/ced.13.1.21-28

Abstract

Car dependence is a fundamental problem in the sustainability of cities with low-density suburban sprawl. Increasing the use of public transport is one of the policy objectives commonly adopted to overcome this problem. It is essential to study journey to work travel behavior by car and bus. This paper applied preference function to analyze travel behavior and Moran’s I spatial statistic to evaluate the spatial association. The results indicated that the commuting preferences of residents have moved towards distance maximization. In general, bus was preferred for shorter distance trips whilst car was preferred for longer distance trips. Unlike car, by increasing distances from the Central Business District, residents tended to use bus for shorter distance trip. A significant positive spatial association was identified for both the slope preferences by car and bus where zones with a preference towards longer or shorter trips tended to travel to zones with similar preferences.
FAKTOR-FAKTOR PENYEBAB REWORK PADA PEKERJAAN KONSTRUKSI Andi Andi; Samuel Winata; Yanto Handarlim
Civil Engineering Dimension Vol. 7 No. 1 (2005): MARCH 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.219 KB) | DOI: 10.9744/ced.7.1.pp. 22-29

Abstract

Rework cannot be separated from construction projects. The direct and indirect cost resulting from it are quite significant. This research aims to identify the causes of rework and to propose effective ways to reduce it. It is conducted using questionnaire, which was targeted to consultants and contractors in Surabaya. The results show that defective designs, changes in design, and coordination problems among design documents were the most influencing factors causing reworks. In order to reduce rework, the most effective ways according to the respondents are enhancing and improving communication and coordination among participants during design and construction phases, and also predicting and solving design problems before construction works begin. Abstract in Bahasa Indonesia : Rework tidak dapat dipisahkan dari dunia konstruksi. Dampak biaya langsung maupun tidak langsung yang diakibatkannya cukup signifikan. Penelitian ini bertujuan mengetahui penyebab utama dari rework dan juga memberikan cara yang efektif untuk menguranginya. Penelitian dilakukan dengan menggunakan kuesioner yang ditujukan kepada konsultan dan kontraktor di Surabaya. Hasil penelitian menunjukkan bahwa kesalahan dan perubahan desain, serta buruknya koordinasi antar dokumen desain adalah faktor yang utama penyebab rework. Untuk dapat mengurangi rework, cara yang paling efektif menurut responden adalah meningkatkan dan memperbaiki komunikasi dan koordinasi pada fase desain dan konstruksi, serta memperkirakan dan mengatasi masalah-masalah desain sebelum masuk ke fase konstruksi.
Soil Liquefaction in Padang due to Padang Earthquake 30September 2009 Hakam, A.
Civil Engineering Dimension Vol. 14 No. 2 (2012): SEPTEMBER 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (647.03 KB) | DOI: 10.9744/ced.14.2.64-68

Abstract

The Padang earthquake of M7.6 on 30 September 2009 (30S’09) caused damage to buildings, houses, public water facilities, and road ways. Several buildings were damaged due to liquefaction. This paper describes the liquefaction potential in Padang based on the site observation and analytical examination. The liquefaction was observed at a number of sites including roadway, river bank and play ground. The samples of sand boils were sent to the laboratory to determine the soil grain size distributions. It is found that the fine-sand (diameter less than 0.4 mm) content of the liquefied soil samples is more than 65%. This type of soils satisfies the criteria of liquefaction susceptibility. Based on the field soil test data, the liquefaction potential of sites is also examined. The results show that the observed locations have liquefaction potential.
PENELITIAN PENDAHULUAN HUBUNGAN PENAMBAHAN SERAT POLYMERIC TERHADAP KARAKTERISTIK BETON NORMAL Yohanes L. D. Adianto; Tri Basuki Joewono
Civil Engineering Dimension Vol. 8 No. 1 (2006): MARCH 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (138.647 KB) | DOI: 10.9744/ced.8.1.pp. 34-40

Abstract

The objective of this research is to explore the effect of adding polymeric fiber to the characteristics of normal concrete (fc’= 30 MPa). Two types of fiber, namely polypropylene and nylon, are considered. The research tested four types of concrete characteristics, namely compressive strength, flexural strength, modulus of elasticity, and cyclical loading. According to the analyses, linear regression with linearity in parameter can explain good relationship. All models developed can explain the variability of the data and are significant in the 0.05 level of significance, except for the relationhip between compressive strength and modulus of elasticity with percentage of nylon. Quadratic function was developed for the relationship between fiber content with the compressive strength, flexural strength, and modulus of elasticity. An efficient model was created by simultaneously modeling the relationship of compressive strength, fiber content, including the age of concrete. Model with logarithmic function was developed for the relation between number of cyclic loading and content of polypropylene, but not for nylon. Analysis showed that the model between cyclical loadings with polypropylene content was better compared with nylon content. Abstract in Bahasa Indonesia : Tujuan penelitian ini adalah mendapatkan hubungan penambahan serat polymeric terhadap karakteristik beton normal (fc’= 30 MPa). Penelitian dilakukan dengan menggunakan dua jenis serat polymeric, yaitu serat polypropylene dan nylon. Penelitian ini menguji empat jenis karakteristik beton, yaitu kuat tekan, kuat lentur, modulus elastisitas, dan pembebanan berulang. Analisis menunjukkan bahwa model regresi linier dengan kelinieran pada parameter dapat menjelaskan hubungan dengan baik. Seluruh model yang dibangun mampu menjelaskan variabilitas data dengan baik dan juga merupakan model yang signifikan pada tingkat keterandalan 0,05, kecuali model hubungan antara kuat tekan dan modulus elastisitas dengan kadar serat nylon. Model dengan fungsi kuadratis dibangun untuk hubungan kadar serat dengan kuat tekan, kuat lentur, dan modulus elastisitas. Suatu model yang efisien telah dibangun untuk menggambarkan hubungan simultan antara kuat tekan, kadar serat, dengan juga melibatkan variabel umur beton. Model dengan fungsi logaritma dibangun hanya untuk hubungan antara jumlah pembebanan berulang dengan penambahan serat polypropylene, namun tidak pada serat nylon. Analisis menunjukkan bahwa model hubungan pembebanan berulang dengan serat polypropylene lebih baik dibandingkan dengan model untuk serat nylon.
Influence of Inorganic Salts on Soils Liquid and Plastic Limits Ayininuola, G.M.; Agbede, O.A.
Civil Engineering Dimension Vol. 15 No. 1 (2013): MARCH 2013
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.377 KB) | DOI: 10.9744/ced.15.1.51-60

Abstract

This study focused on the influence of inorganic salts on soil liquid limit (LL) and plastic limit (PL). Sodium chloride, NaCl, potassium nitrate KNO3 and calcium sulphate, CaSO4 of various concentrations were added to two subsoils. Their liquid and plastic limits before and after contamination were monitored. Soil cation exchange capacity (CEC), exchangeable cations (sodium, Na+, potassium, K+, and calcium, Ca2+) and exchangeable anions (chloride, Cl-, nitrate, NO3, and sulphate, SO42-) were determined. A set of equations for predicting LL and PL, (with R2 = 0.908 to 0.990) at different levels of chemical interaction with time was developed using multiple regression analysis model. The results showed that both NaCl and KNO3 brought about reduction in LL and PL while CaSO4 addition led to increment in LL and PL. The predictive equations revealed that there is high tendency for the contaminated soils to regain their uncontaminated LL and PL values with time.
A Modal Pushover Analysis on Multi-Span Concrete Bridges to Estimate Inelastic Seismic Responses Ima Muljati; Pennung Warnitchai
Civil Engineering Dimension Vol. 9 No. 1 (2007): MARCH 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1039.014 KB) | DOI: 10.9744/ced.9.1.pp. 33-41

Abstract

The performance of Modal Pushover Analysis (MPA) in predicting the inelastic seismic response of multi-span concrete bridges is investigated. The bridge is subjected to lateral forces distributed proportionally over the span of the bridge in accordance to the product of mass and displaced shape. The bridge is pushed up to the target displacement determined from the peak displacement of the nth mode inelastic Single Degree of Freedom System derived from Uncoupled Modal Response History Analysis (UMRHA). The peak response from each mode is combined using Square-Root of Sum-of-Square (SRSS) rule. Although the use of SRSS rule is not appropriate in this bridge and the displaced pattern is shifted from the elastic shape due to yielding, MPA can predict well the total peak response of the bridge in inelastic range.
PENGUKURAN KADAR AIR AGREGAT DAN BETON SEGAR DENGAN MENGGUNAKAN MICROWAVE OVEN Gideon Hadi Kusuma; Handoko Sugiharto
Civil Engineering Dimension Vol. 2 No. 1 (2000): MARCH 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (115.971 KB) | DOI: 10.9744/ced.2.1.pp. 22-36

Abstract

The conventional method of water content measurement of aggregate and fresh concrete need along time to perform. As an alternative the use of microwave oven is explored in this research. The microwave oven used has 900 watt power and equiped with a turn table. Nine (9) type of aggregate consist of five (5) type of fine aggregate and four (4) type of coarse aggregate with varions water absorbsion value, are unvestigated. The rater contents measured is then compared with the once obtained using conventional oven. Four (4) type of mix using aggegate with varions water absorbsion values. Water content used for the fresh concrete mix is 0.3, 0.5 and 0.7. The test results show that this method can beused to measure water content of fine and coarse aggregate regardless of the water absorbsion values of the aggregates. For fine aggregate nine (9) minutes drying time is needed to get 100% accuracy while for coarse aggregate 11 minutes with 96% accuracy. For fresh concrete using aggregate with less than 5% absorbsion value 18 minutes is neede to get 98% accuracy, while for aggregate with 40% absorbsion value 35 minutes is needed to get 80% accuracy. Abstract in Bahasa Indonesia : Pengukuran kadar air pada agregat dan beton segar dengan metode konvensional memerlukan waktu yang cukup lama, maka dilakukan penelitian penggunaan microwave oven sebagai metode alternatifnya. Microwave oven yang digunakan mempunyai daya 900 watt dan dilengkapi dengan piring putar. Dilakukan penelitian terhadap 9 tipe agregat (5 jenis agregat halus dan 4 jenis agregat kasar) dengan berbagai nilai absorpsi. Sedangkan untuk beton segar dibuat 4 macam campuran dengan berbagai nilai absorpsi agregat. Faktor air-semen yang digunakan adalah 0.3, 0.5 dan 0.7. Hasil pengukuran kadar airnya dengan microwave oven dibandingkan terhadap oven standard. Hasil tes yang diperoleh menunjukkan bahwa metode ini dapat digunakan untuk mengukur kadar air agregat halus dan kasar dengan tidak tergantung pada nilai absorpsinya. Untuk agregat halus dibutuhkan waktu pengeringan selama 9 menit dengan ketelitian 100%, untuk agregat kasar selama 11 menit dengan ketelitian 96%. Untuk beton segar dengan agregat yang nilai absorpsinya di bawah 5% selama 18 menit dengan ketelitian 98%. Untuk beton segar dengan agregat yang nilai absorpsinya 40% dibutuhkan waktu 35 menit dan hasil yang dicapai hanya sanggup mengukur kadar air total, rata-rata sebesar 80% dari total kandungan air dari beton segar yang diukur.
Trust to Contractor in Housing Construction Chandra, H.P.; Limanto, S.
Civil Engineering Dimension Vol. 16 No. 1 (2014): MARCH 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.535 KB) | DOI: 10.9744/ced.16.1.46-53

Abstract

Trust is the willingness to rely upon the actions of others, to be dependent upon them, and thus to be vulnerable to their actions. In housing construction, where contract is usually  awarded without tender, trust of the developer to the contractor is a very important factor. This paper studies trust relationship, specifically on the developer’s side to contractor. Trust is measured by identifying three major factors: characteristics, how to build, and the benefits of trust. Fifteen respondents from fifteen housing developers in West Surabaya, Indonesia, participated in the questionnaire survey. The results indicated that characteristics of trust depend on the credibility of the contractor, which is the depth of its experience. Trust can be built by creating team compatibility and aligning issues; and behaving professionally. Trust can help the contractor accelerate  in solving the problem in construction.
Variability Analysis of Prime Cost Sums Ime Johnson Ikpo
Civil Engineering Dimension Vol. 10 No. 1 (2008): MARCH 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (98.636 KB) | DOI: 10.9744/ced.10.1.pp. 40-44

Abstract

This paper investigated the variability levels of prime cost sums in building projects in order to establish the reliability of such estimates in bills of quantities. It involved a purposive sampling of forty-six executed projects in South-western Nigeria from which data on estimated and final prime cost sums as well as estimated and final contract sums were procured. Ratios interrelating the four variables were generated and their mean values determined. The mean prime cost sum overrun was found to be 41% of the estimated sums. However, a negative relationship between the prime cost sums and the final contract sums was established. Based on observed variations, models were developed to predict any of the ratios in general, and specifically, the practical prime cost range in order to effectively control overall project costs.
ANALISIS HUBUNGAN SISTEM BANGUNAN DENGAN KINERJA TOTAL DAN INTEGRASI BANGUNAN PADA BERBAGAI GEDUNG BERTINGKAT DI SURABAYA Herry Pintardi Chandra
Civil Engineering Dimension Vol. 3 No. 1 (2001): MARCH 2001
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (168.362 KB) | DOI: 10.9744/ced.3.1.pp. 16-23

Abstract

Factors in building system design have target in achieving maximum performance when they have proper correlation with total performance and building integrity. The purpose of this research is to find out the influence of building system: structural, envelope, mechanical and interior, to the performance and building integrity: spatial, thermal, indoor air quality, acoustical, and performance visual and building integrity. The analysis shows that: Structural system has dominant influence to the spatial performance, indoor air quality and building integrity (mean 4,75), envelope system has dominant influence to the thermal performance (mean 4,75), mechanical system has dominant influence to the visual performance (mean 5,00), interior system has dominant influence to the spatial performance (mean 4,75), In conclusion, there are differences in which building systems affect the total performance and building integrity. Abstract in Bahasa Indonesia : Faktor-faktor dalam desain sistem bangunan mempunyai sasaran dalam mencapai kinerja maksimum bila memiliki hubungan yang sesuai dengan kinerja total dan integrasi bangunan. Penelitian ini bertujuan untuk mengetahui sejauhmana faktor-faktor dalam sistem bangunan: structural, envelope, mechanical dan interior berpengaruh terhadap kinerja dan integrasi bangunan: spatial, thermal, indoor air quality, acoustical dan visual performance serta building integrity. Dari hasil analisis data, didapat: Structural system memiliki pengaruh yang dominan terhadap spatial performance, indoor air quality dan building integrity (mean 4,75), envelope system memiliki pengaruh yang dominan terhadap thermal performance (mean 4,75), mechanical system memiliki pengaruh yang dominan terhadap visual performance (mean 5,00), interior system memiliki pengaruh yang dominan terhadap spatial performance (mean 4,75). Disimpulkan bahwa terdapat perbedaan pengaruh desain sistem terhadap kinerja total dan integrasi bangunan.

Page 12 of 47 | Total Record : 466

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