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Civil Engineering Dimension
ISSN : 14109530     EISSN : 1979570X     DOI : -
Core Subject : Engineering,
The Civil Engineering Dimension (Dimensi Teknik Sipil) is a refereed journal, published twice a year, in March and September.
Arjuna Subject : -
Articles 9 Documents
Search results for , issue "Vol. 4 No. 2 (2002): SEPTEMBER 2002" : 9 Documents clear
ANALISA SISTEM MANAJEMEN LINGKUNGAN ISO 14000 DAN KEMUNGKINAN IMPLEMENTASINYA OLEH PARA KONTRAKTOR KELAS A DI SURABAYA Herry Pintardi Chandra
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (177.109 KB) | DOI: 10.9744/ced.4.2.pp. 77-84

Abstract

Sustainable construction development needs a good environmental management system. International standard ISO 14000 is one the standard of a good environmental management system. This research aims to obtain general idea on how far Class A contractors in Surabaya know about information, element, and the benefit of ISO 14000, and how to engage in analyzing environmental management system using Friedman and Wilcoxon Signed Rank Test. From the data analysis, it was shown that 64,71% of the respondents is aware of ISO 14000 and issue on work safety and health for employees has become a first priority (mean rank 8.09). This issue has been followed-up with the development of a proactive strategy (61.76%). The strategy is followed by tactic development among others is to check employees’ health in accordance to standard of work safety and health for employees which has been imposed by the government (mean rank 5.00). Abstract in Bahasa Indonesia : Konsep konstruksi berkelanjutan memerlukan sistem mana¬jemen lingkungan yang baik. Standar internasional ISO 14000 merupakan salah satu wahana untuk menjamin kinerja sistem manajemen lingkungan tersebut. Penelitian ini bertujuan untuk mendapatkan gambaran umum tentang sejauh mana para kontraktor kelas A di Surabaya menge¬tahui tentang informasi, elemen, dan keuntungan ISO 14000 serta bagaimana melakukan analisa sistem manajemen lingkungan tersebut dengan Friedman dan Wilcoxon Signed Ranks Test. Hasil analisa data menunjukkan 64,71% responden mengetahui informasi tentang ISO 14000, dan isu keselamatan dan kesehatan kerja karyawan menjadi prioritas utama (mean rank 8,09). Isu tersebut ditindaklanjuti dengan pengembangan strategi proaktif (61,76%), dimana strategi tersebut diikuti dengan pengembangan taktik antara lain memeriksa kesehatan karyawan sesuai dengan standard kesehatan yang telah ditentukan oleh pihak yang berwenang (mean rank 5,00).
UTILIZATION OF UNCONTROLLED BURNT RICE HUSK ASH IN SOIL IMPROVEMENT Agus Setyo Muntohar
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.891 KB) | DOI: 10.9744/ced.4.2.pp. 100-105

Abstract

Expansive soil has been a problem in Indonesia as in other countries. Current research found that there is a potential use of silica waste%2C resulting from burnt rice husk%2C as a pozzolanic material. This paper presents the results of study on the utilisation of ashes produced from uncontrolled rice husk burnt in Yogyakarta %28Indonesia%29.%0D%0A%0D%0AIn this research%2C a series of laboratory tests has been conducted. The tests were carried out individually or in a combination in which the Rice Husk Ash %28RHA%29 content were varied from 7.5%2C 10%2C and 12.5 percent%2C and the lime content from 2%2C 4%2C 6%2C and 10 percent %28by the dry weight of soil%29. All the samples have been remoulded at their optimum moisture content %28OMC%29 and maximum dry density %28MDD%29. The research shows that lime - rice husk ash decreased the swell of expansive soil and improved its strength and bearing capacity.%0D%0A Abstract in Bahasa Indonesia : soil+improvement%2C+expansive+soil%2C+uncontrolled+-+burnt%2C+rice+husk+ash.
A CONCEPTUAL TOOL FOR ASSESSING CLIENT PERFORMANCE IN THE CONSTRUCTION PROJECT COALITION Robby Soetanto; David G. Proverbs; Gary D. Holt
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.322 KB) | DOI: 10.9744/ced.4.2.pp. 60-68

Abstract

Due to the significant impact of client performance on overall project performance and the interdependence of participant%5C%27s performance in the construction project coalition %28i.e. clients%2C designers and constructors%29%2C there is a need to establish client performance measures. Based on data collected from in-depth interviews with nineteen UK architects and nine UK contractors%2C a generic tool for the on-going formal assessment of client performance is presented. It was found that this approach to performance assessment %28i.e. from the view point of other%2C non-client coalition participants%29 should lead to improved project relationships. Data analysis showed that in addition to %5C%27harder%5C%27 measures such as understanding of project requirements and finance%2C other%2C %5C%27softer%5C%27 measures of client performance %28e.g. attitude%29 were worthy of consideration since they determine the quality of participant relationships. It is recommended that the tool be used to promote more effective client performance and thus enhance coalition relationships%2C enabling continuous improvement. The ultimate aim is to develop similar tools for the assessment of all coalition participants based on a culture of openness and trust. Abstract in Bahasa Indonesia : assessment+tool%2C+coalition+participants%2C+client+performance%2C+perceptions%2C+performance+measures%2C+satisfaction.
STUDI TENTANG PENGARUH PENGGUNAAN ROAD TECH 2000 TERHADAP SIFAT-SIFAT TANAH EKSPANSIF Gogot Setyo Budi
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (149.247 KB) | DOI: 10.9744/ced.4.2.pp. 106-111

Abstract

In this research, micro-organism based admixture called Road Tech 2000, is used to stabilize expansive soil taken from West Surabaya area. The laboratory experiments conducted comprise soil characteristics, swelling potential, and shear strength determination. The results show that Road Tech 2000 is able to maintain the moisture content of the soil, reduce its plasticity (PI), and decrease its swelling potential. The addition of Road Tech 2000 does not affect the strength of the expansive soil, in terms of Unconfined Compressive Strength UCS and CBR. However, a significant strength increase was observed in the soaked CBR test. Abstract in Bahasa Indonesia : Penelitian ini meliput hasil stabilisasi tanah ekspansif dari daerah Surabaya Barat dengan menggunakan Road Tech 2000, yang memakai bahan dasar mikro-organik. Percobaan laboratorium yang dilakukan meliputi uji karakteristik, pengembangan (swelling), dan kekuatan geser (strength) tanah. Hasil penelitian menunjukkan bahwa Road Tech 2000 dapat menjaga/mempertahankan kadar air (kelembaban) sample, mengurangi plastisitas tanah (Plasticity Index), dan menurunkan potensi pengembangan tanah (swelling potential). Penambahan Road Tech 2000 tidak berpengaruh pada kekuatan tanah expansif yang didapat dari tes Unconfined Compressive Strength (UCS) dan CBR. Akan tetapi kenaikan kekuatan yang signifikan terlihat pada tes CBR soaked.
PEMODELAN BANGKITAN PERGERAKAN PADA TATA GUNA LAHAN SEKOLAH DASAR SWASTA DI SURABAYA Harry Patmadjaja; Rudy Setiawan
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (181.832 KB) | DOI: 10.9744/ced.4.2.pp. 69-76

Abstract

Elementary School is a common location for traffic congestion especially every morning. This condition can be avoided if the elementary school planner can predict the trip generation of that school. The aim of this research is to make a mathematical model of trip generation for elementary school land use at Surabaya. Research has been done to eight private elementary school using Pearson Correlation Analysis, Simple Regression Analysis, and Stepwise Regression Analysis to obtain the most significant trip generation model. Arrival rate and service rate distribution was analyzed using Chi-Square Distribution Fitting method to obtain arrival rate and service rate characteristic. From the analysis, the most significant trip attraction model is Y = -867,9 + 194.Log X1 + 274.Log X8 + 177.Log X5, in which Y is number of student vehicle, X1 is number of elementary student, X8 is total area of classroom, and X5 is classroom capacity. The most significant trip production model is Y= -797,2 + 311.Log X1 + 164.Log X8 +79.Log X15, in which Y is number of student vehicle, X1 is number of elementary student, X8 is total area of classroom, and X15 is ratio between number of teacher and classroom. Several elementary school characteristics that influence traffic congestion are: number of student, number of queue lane, number of entrance, and vehicle occupancy. Abstract in Bahasa Indonesia : Sekolah dasar merupakan salah satu lokasi yang sering mengalami masalah kemacetan lalulintas. Hal tersebut bisa dicegah bila pemilihan lokasi sekolah dilakukan dengan mempertimbangkan perkiraan bangkitan pergerakan yang akan terjadi. Tujuan dari penelitian ini adalah untuk membuat model bangkitan pergerakan (trip generation) kendaraan roda empat (pribadi dan antar jemput) akibat pembangunan sekolah dasar swasta di Surabaya. Survey dilakukan pada delapan sekolah dasar swasta di Surabaya. Hasil survey dianalisis dengan metode Pearson Correlation, Simple Linear Regression, dan Stepwise Regression untuk mendapatkan model persamaan matematis yang paling signifikan. Distribusi laju kedatangan dan laju pelayanan dianalisa dengan metode chi square distribution fitting untuk mengetahui karakteristik laju kedatangan dan laju pelayanan kendaraan pengantar siswa. Hasil analisa menunjukkan model terbaik untuk meramalkan pergerakan yang tertarik menuju ke sekolah dasar swasta (trip attraction) adalah Y = -867,9 + 194.Log X1 + 274.Log X8 + 177.Log X5, dimana Y adalah jumlah kendaraan pengantar, X1 adalah jumlah siswa sekolah dasar, X8 adalah luas total kelas, dan X5 adalah kapasitas kelas. Sedangkan model terbaik untuk meramalkan pergerakan yang berasal dari sekolah dasar swasta (trip production) adalah Y= -797,2 + 311.Log X1 + 164.Log X8 +79.Log X15, dimana Y adalah jumlah kendaraan penjemput, X1 adalah jumlah siswa sekolah dasar, X8 adalah luas total kelas, dan X15 adalah jumlah guru dibagi jumlah kelas. Beberapa karakteristik sekolah dasar yang mempengaruhi kelancaran lalulintas adalah: jumlah siswa, jumlah lajur antrian, jumlah pintu masuk, dan okupansi kendaraan.
INTRODUCTION TO MESHLESS LOCAL PETROV-GALERKIN METHOD Pamuda Pudjisuryadi
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.892 KB) | DOI: 10.9744/ced.4.2.pp. 112-116

Abstract

Abstract in Bahasa Indonesia :
PRICING STRATEGY IN THE INDONESIAN CONSTRUCTION INDUSTRY Krishna Mochtar
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.966 KB) | DOI: 10.9744/ced.4.2.pp. 85-93

Abstract

Issues related to pricing strategy in the Indonesian construction industry are covered%2C including problems of current pricing strategy in construction%2C exploration of pricing strategies with a market-based approach%2C and survey findings of the top Indonesian contractors regarding their current pricing practices and the applicability of market-based pricing strategy models developed by Mochtar and Arditi. Comparisons with similar survey findings of the top U.S. contractors are conducted whenever possible. In conclusion%2C the belief that current pricing strategy in construction is predominantly cost-based is confirmed by the survey findings%3B indeed%2C in setting the markup%2C most contractors rely on subjective assessment of the competition. Using simulated bidding scenarios%2C it is discovered that Indonesian contractors tend to be more market-based as they know more about the owner%5C%27s characteristics%2C competitors%5C%27 characteristics%2C and market demand. Consequently%2C the implementation of bidding procedure proposed by Mochtar and Arditi is supported. To maximize the benefits of market-based pricing strategies%2C the bidding procedure change should be explored by all parties involved in the Indonesian construction industry. Abstract in Bahasa Indonesia : Cost-based+pricing%2C+market-based+pricing%2C+pricing+variables%2C+bidding+procedure.
PENGARUH PENCAMPURAN ABU SEKAM PADI DAN KAPUR UNTUK STABILISASI TANAH EKSPANSIF Gogot Setyo Budi
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (154.917 KB) | DOI: 10.9744/ced.4.2.pp. 94-99

Abstract

Stabilization is one of several methods to reduce swelling potential of expansive soils. In this experiment, a mix of lime (Ca) and rice husk ash (RHA) was used to stabilize the expansive soil. Sixty to eighty percent of lime content used to stabilize soil was replaced with rice husk ash. The result shows that the addition of 24% lime increases the strength of the soil up to 400%, if 60% of lime content is replaced with rice husk ash, the increase dropped to 300%. In general, a mix of 40% lime and 60% rice husk ash could reduce swelling potential, up to below 1%, and increase the strength of expansive soil. Optimum curing needed to achieve maximum strength of the mix is 14 days. Abstract in Bahasa Indonesia : Stabilisasi adalah salah satu langkah untuk mengantisipasi sifat kembang susut pada tanah ekspansif. Pada penelitian ini digunakan campuran kapur (Ca) dan abu sekam padi (RHA) untuk menstabilisasi tanah expansif. Antara 60% sampai dengan 80% kandungan kapur untuk stabilisasi diganti dengan abu sekam padi. Hasil penelitian menunjukkan bahwa penambahan 24% kapur dapat meningkatkan kekuatan tanah sampai 400%, sedangkan bila 60% dari kapur tersebut diganti dengan abu sekam, kekuatannya turun menjadi 300%. Secara umum, campuran 60% abu sekam padi dan 40% kapur sangat efektif untuk menurunkan potensi pengembangan (swelling), sampai di bawah 1%, dan meningkatkan kekuatan tanah (strength). Curing optimum yang diperlukan tanah campuran untuk mencapai kekuatan maksimum adalah 14 hari.
APLIKASI KONSEP BERBASIS PERPINDAHAN PADA PERENCANAAN PILAR BETON BERTULANG UNTUK STRUKTUR JEMBATAN Takim Andriono; Abraham Abraham; L. David A.T.; Wong Foek Tjong
Civil Engineering Dimension Vol. 4 No. 2 (2002): SEPTEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (293.857 KB) | DOI: 10.9744/ced.4.2.pp. 51-59

Abstract

Recently, displacement-based seismic design concept is being developed. According to this concept, structures are designed based on a certain displacement target. This paper presents the application of the displacement-based design concept to reinforced concrete bridge piers of 3, 5, 7, 9 11,and 13 m height. The design results are then analyzed by inelastic time history analysis using Ruaumoko computer program. The results of inelastic time history analysis show that for bridge piers with height 7 m or more, the actual drifts relatively fit the design drifts, while for the 3m and the 5m height piers, the actual drifts are significantly less than the design drifts. Abstract in Bahasa Indonesia : Akhir-akhir ini sedang dikembangkan metode perencanaan seismik struktur dengan konsep berbasis perpindahan. Dengan konsep ini struktur direncanakan berdasarkan target perpindahan yang dikehendaki. Tulisan ini membahas aplikasi konsep berbasis perpindahan pada perencanaan struktur pilar jembatan beton bertulang dengan ketinggian 3, 5, 7, 9, 11, dan 13 m. Hasil perencanaan kemudian dianalisis dengan analisis inelastik riwayat waktu dengan menggunakan program komputer Ruaumoko. Hasil analisis inelastik riwayat waktu menunjukkan bahwa untuk pilar dengan ketinggian 7m atau lebih drift yang terjadi cukup sesuai dengan drift yang direncanakan, sedangkan untuk pilar dengan ketinggian 3m dan 5m drift yang terjadi relatif jauh lebih kecil daripada drift yang direncanakan.

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