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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 7 Documents
Search results for , issue "Vol. 1 No. 2 (1999): SEPTEMBER 1999" : 7 Documents clear
DEVELOPMENT OF FINITE DIFFERENCE METHOD APPLIED TO CONSOLIDATION ANALYSIS OF EMBANKMENTS Vipman Tandjiria
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.377 KB) | DOI: 10.9744/ced.1.2.pp. 73-80

Abstract

This study presents the development of the finite difference method applied to consolidation analysis of embankments. To analyse the consolidation of the embankment as real as possible, the finite difference method in two dimensional directions was performed. Existing soils under embankments have varying stresses due to stress history and geological background. Therefore, Skempton’s parameter “A” which is a function of vertical stresses was taken into account in this study. Two case studies were chosen to verify the proposed method. It is found out that results obtained from the proposed method agree with either recorded data or results solved using another solution.
MENCARI PENYEBAB KECELAKAAN DI JALAN TOL SURABAYA-GEMPOL DENGAN ANALISA FREKUENSI DAN CROSSTABULATION Harry Patmadjaja
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (81.641 KB) | DOI: 10.9744/ced.1.2.pp. 81-91

Abstract

Three hunderd and thirteen data of accident between January 1997 and December 1997 were used to determine causes of accident in Surabaya-Gempol Surabaya-Gempol Tol Road. The evaluations were done using Frequency, and Crosstabulation analysis. Frequency analysis was used to determine the blackspots, whereas Crosstabulation analysis using Pearson chi-square and the contingency coefficient was used to identify corelations between fatality of accident, major cause of accident, variables causing major accident and other variables causing accident.The analysis concluded that fatal accidents were caused by sleepiness. The variables causing the accident were; the driver’s physical condition, close spacing of the vehicles and tyre failures. Fatal, and nonfatal accidents were caused by variables as type of vehicle, vehicle manuever and the age of driver as well as the vehicle.
HUBUNGAN ANTARA BIAYA KONSTRUKSI BANGUNAN DENGAN INFLASI Studi Kasus Berbagai Tipe Bangunan di Jawa Timur 1993-1998 Herry Pintardi Chandra
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (101.423 KB) | DOI: 10.9744/ced.1.2.pp. 92-102

Abstract

Many changes in building construction cost evoked by inflation recently, make an analysis of the relation between building construction cost and inflation is needed. In this analysis linear regression method is used to obtain the influence of inflation to building construction cost and the relationship between this two parameter. Element with the highest influence of inflation to precentage cost and per square meter cost for industrial building, housing and office building is structure. Element which precentage cost has the closest relationship with inflation is sitework for industrial building, structure for housing, thermal and moisture protection for office building. Element which per square meter cost has the closest relationship with inflation for industrial building is doors and windows, structure for housing, thermal and moisture protection for office building Abstract in Bahasa Indonesia : Banyaknya perubahan dalam biaya konstruksi bangunan akibat laju inflasi yang terjadi beberapa tahun terakhir ini, mendorong diperlukannya analisa hubungan antara biaya konstruksi bangunan dengan inflasi. Dalam penelitian ini analisa regresi linier digunakan untuk memperoleh besarnya pengaruh inflasi terhadap biaya konstruksi bangunan dan keeratan hubungan antara kedua parameter ini. Pengaruh tertinggi inflasi terhadap prosentase biaya konstruksi bangunan dan biaya konstruksi bangunan per meter persegi untuk bangunan industri, rumah dan kantor, semuanya ada pada elemen structure. Keeratan hubungan tertinggi antara prosentase biaya konstruksi bangunan dengan inflasi untuk bangunan industri ada pada elemen site work, untuk bangunan rumah elemen structure dan untuk bangunan kantor elemen thermal and moisture protection. Sedangkan keeratan hubungan tertinggi antara biaya konstruksi bangunan per meter persegi dengan inflasi untuk bangunan industri ada pada elemen doors and windows, untuk bangunan rumah elemen structure dan untuk bangunan kantor elemen thermal and moisture protection
PERBAIKAN MUTU PADA PROSES DAN PRODUKSI SPUN-PILE DENGAN MENGGUNAKAN METODE TAGUCHI Gideon Hadi Kusuma; Ferryanto S.G.; Dedy Cahyono H
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (51.753 KB) | DOI: 10.9744/ced.1.2.pp. 59-64

Abstract

There are two major problems in producing concrete spun piles. First is the concrete strength and second is the uniformity of the cross section. Due to spinning, most concrete spun piles cross section consist of two layers. The inner part which is mortar with high water and cement content and the outer layer, which is quite dense with aggregate. Due to this different layer with different shrinkage properties concrete spun piles are prone to crack. This shrinkage cracks can cause corrosion on the prestressed wire thus influencing its durability. This research was done to find the best design to give a product with the thinnest layer of mortar while achieving the strength (K 500). The Taguchi design of experiment method, a method to improve the quality of a product by minimizing the effect caused by variation without eliminating the causes, is used. The control factors chosen are Sand Aggregate (S/A) ratio, admixture, speed and duration of spinning, each with 3 levels. The simulated noise chosen is gradation of sand with 2 different levels. Eighteen (18) experiments are needed for the above simulated noise and control factor. Through the Signal to Noise Ratio (SNR) and variance analysis, can be proposed a robust design which is less sensitive to the noise factors as well as giving better result from the previous product condition Abstract in Bahasa Indonesia : Keberhasilan melaksanakan proyek konstruksi tepat pada waktunya adalah salah satu tujuan terpenting, baik bagi pemilik maupun kontraktor. Keterlambatan adalah sebuah kondisi yang sangat tidak dikehendaki, karena akan sangat merugikan kedua belah pihak dari segi waktu dan biaya. Penelitian ini bertujuan menemukan faktor-faktor yang sangat berperan atau mendominasi sebagai penyebab keterlambatan, dengan maksud agar proses perencanaan dan penjadwalan proyek konstruksi dapat dilakukan dengan lebih lengkap dan cermat; sehingga keterlambatan sedapat mungkin dihindarkan atau dikendalikan. Temuan penyebab-penyebab keterlambatan, yang dikonfirmasikan dengan sigi lapangan menggunakan kuesioner yang didistribusikan kepada kontraktor, menunjukkan bahwa masalah-masalah tidak seksamanya rencana kerja, tidak tersedianya sumber daya dan kurangnya komunikasi/koordinasi, merupakan faktor-faktor yang dominan sebagai penyebab keterlamabatan dari sisi kontraktor. Dari sisi pemilik proyek, masalah ketidaklengkapan dan ketidakjelasan desain dan lingkup pekerjaan, masalah sistim pengawasan dan pengendalian proyek, merupakan faktor yang dominan sebagai penyebab keterlambatan
FAKTOR-FAKTOR STRATEGI POSITIONING DALAM PEMASARAN REALESTAT Suatu Studi Pengalaman Pengembang Realestat di Surabaya Herry Pintardi Chandra
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.995 KB) | DOI: 10.9744/ced.1.2.pp. 114-124

Abstract

Real estate development needs an exact positioning strategy by knowing the significant factors. Positioning strategy is the combination of marketing actions used to portray the positioning concept to targeted buyers. The factors of positioning strategy in this research are product attribute, product price, product usage, product user, product class, and competitor. The research was focused on ten real estate developers with spesific criteria, i.e : located in Surabaya City, area bigger than 40 ha, in development stage, and average price of land more than Rp. 550.000,- per square meter. The results show that the highest rating is “consumers income” in “product user” factor with a mean of 3.9. Group A + B, and group B rejected null hypothesis, it means at least one of six factors has a different role. The developers can choose the significant factors such as “location” in “product attribute”. Group A accepted the null hypothesis, it means that six factors at positioning strategy have the same role in the real estate marketing. There are some differences in the market positioning between group A and group B. This research also suggests the developers who will choose the factors of positioning strategy to consider the external strength and emphasize in “consumer income” and “location”. Abstract in Bahasa Indonesia : Pengembangan realestat memerlukan strategi positioning yang tepat dengan mengetahui faktor-faktor yang signifikan. Strategi positioning adalah kombinasi dari tindakan pemasaran yang digunakan untuk memberikan gambaran konsep positioning kepada pembeli yang ditargetkan. Faktor-faktor strategi positioning dalam penelitian ini adalah atribut produk, harga produk, pemakaian produk, pemakai produk, kelas produk, dan pesaing. Penelitian difokuskan kepada sepuluh pengembang realestat di Surabaya dengan kriteria spesifik yaitu merupakan lahan di dalam kota Surabaya luas lahan lebih besar 40 ha, berada dalam tahap pengembangan, dan harga jual kavling rata-rata di atas Rp. 550.000,- per meter persegi. Hasilnya menunjukkan bahwa peringkat tertinggi adalah “pendapatan konsumen” yang terdapat dalam faktor “pemakai produk” dengan nilai rata-rata sebesar 3,9. Grup A + B, dan grup B menolak hipotesis null, artinya sekurang-kurangnya ada satu diantara enam faktor tersebut mempunyai peran yang berbeda. Pengembang dapat memilih faktor yang signifikan misalnya ”lokasi” yang terdapat dalam “atribut produk”. Grup A menerima hipotesis null, artinya bahwa enam faktor dalam strategi positioning mempunyai peran yang sama dalam pemasaran realestat. Ada perbedaan positioning pasar antara grup A dan grup B. Hasil penelitian juga menyarankan agar pengembang yang akan memilih faktor-faktor dalam strategi positioning untuk memperhatikan kekuatan eksternal dan mengutamakan pada “pendapatan konsumen” dan “lokasi”.
SUDUT PENYEBARAN BEBAN PONDASI DANGKAL DI ATAS TANAH URUG Sugie Prawono
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (347.574 KB) | DOI: 10.9744/ced.1.2.pp. 65-72

Abstract

Existing theories of stress distribution in a homogeneous soil do not consider the effect of soil density, even though the density test is always used to check the quality of compacted fill. It is always assumed that a surface load is distributed in the soil beneath the foundation through an angle of distribution from the vertical direction. The purpose of this research is to check the relationship of the density and thickness of a filling material to the angle of distribution. Results of this investigation concluded that the angle of distribution will increase if the compacted soil was made more compact in a reduced thickness. Effect of soil density is more dominant compared to the thickness of the fill Abstract in Bahasa Indonesia : Teori distribusi tegangan dalam tanah yang homogen tidak memperhitungkan pengaruh kepadatan tanah, sedangkan metode perbaikan tanah dengan urugan justru mengandalkan kepadatan tanah urugan ini. Distribusi tegangan dalam tanah dapat dianggap sebagai hasil penyebaran beban melalui suatu sudut penyebaran tertentu, yang diukur terhadap sumbu vertikal. Penelitian ini bertujuan untuk mengetahui hubungan kepadatan dan tebal suatu tanah urug dengan sudut penyebaran tersebut. Hasil penelitian menyimpulkan bahwa sudut penyebaran (a) makin besar bilamana kepadatan tanah urug (gdry) ditingkatkan dan tebalnya dikurangi. Pengaruh kepadatan terhadap sudut penyebaran lebih dominan daripada ketebalan
ANALISA WHAT IF SEBAGAI METODE ANTISIPASI KETERLAMBATAN DURASI PROYEK Ratna S Alifen
Civil Engineering Dimension Vol. 1 No. 2 (1999): SEPTEMBER 1999
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.843 KB) | DOI: 10.9744/ced.1.2.pp. 103-113

Abstract

A project network is composed of various activities interrelated in a sequencial relationship. If delay occurs on one activity, it will eventually cause the project overall duration to delay. To anticipate the project delays one could accelarate the succeeding activity in the network. Critical Path Method (CPM) is a management tool which is widely used in the construction project. In this study “what if” analysis is used to anticipate project delays by accelarating the activities on CPM schedule. The accelaration actions are treated in accordance with additional working hours and man-power in the succeeding activities Abstract in Bahasa Indonesia : Jaringan kerja proyek terdiri dari berbagai jenis aktivitas yang saling berkaitan antara satu dengan yang lain. Bila terjadi keterlambatan pada salah satu jenis aktivitas, sering kali akan menyebabkan keterlambatan durasi proyek secara keseluruhan. Salah satu usaha untuk mengantisipasi keterlambatan durasi proyek adalah dengan melakukan percepatan durasi aktivitas pengikut. Metode Jalur Kritis atau Critical Path Method (CPM) merupakan suatu metode penjadwalan proyek yang sudah dikenal dan sering digunakan sebagai sarana manajemen dalam pelaksanaan proyek. Sebuah studi telah dilakukan untuk mengatasi masalah percepatan durasi aktivitas sebagai langkah antisipasi keterlambatan proyek, dengan analisa “what if” yang diterapkan pada jadwal CPM. Percepatan durasi dilakukan pada aktivitas-aktivitas pengikut dengan menambah jumlah jam kerja dan jumlah pekerja pada aktivitas percepatan

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