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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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ANALISA FAKTOR-FAKTOR YANG DIPERTIMBANGKAN KONSUMEN DALAM PEMBELIAN PROPERTI DI CITRARAYA SURABAYA Njo Anastasia; Yuliana Lieyanto; Felicia Wongosari
Civil Engineering Dimension Vol. 7 No. 2 (2005): SEPTEMBER 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

Since June 2003, CitraRaya Surabaya Housing was developed by means of Singaporean City concept that was a reposition of the old concept namely Autonomous City. Along with the new concept, the development and management were adjusted to Singaporean appearances and standards. Factor analysis of property attributes consisting of; location, price, physical appearance, image of the developer, and concept of Singaporean City, shows that CitraRayaâs consumers primary consideration to purchase a house is not the Singaporean City Concept, but the price factor; while the primary consideration to purchase a parcel of land is indeed the Singaporean City concept. Abstract in Bahasa Indonesia : Sejak Juni 2003 perumahan CitraRaya Surabaya dikembangkan dengan konsep Kota Singapura yang merupakan reposisi dari konsep lama yaitu Kota Mandiri. Dengan konsep baru ini, pengembangan dan manajemen kota disesuaikan dengan penampilan dan standar Singapura. Dengan menggunakan analisa faktor terhadap atribut-atribut properti yang terdiri dari lokasi, harga, tampilan fisik properti, image developer, dan konsep Kota Singapura, diperoleh bahwa yang merupakan pertimbangan utama konsumen CitraRaya di Surabaya dalam pembelian rumah bukanlah konsep Kota Singapura namun faktor harga, sedangkan pertimbangan utama konsumen dalam pembelian kavling adalah faktor konsep kota Singapura.

A Simple Technique to Determine Interface Slip of Stud Connected SCC Girders Prakash, A.; Lakshmanan, N.; Anandavalli, N.; Madheswaran, C.K.; Iyer, N.R.; Rajasankar, J.
Civil Engineering Dimension Vol. 14 No. 2 (2012): SEPTEMBER 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

A simple technique is proposed to compute interface slip of stud connected steel-concrete composite (SCC) girders based on the results of a flexure test. The technique makes use of relative longitudinal displacement of the concrete slab and steel beam to calculate the interface slip. In the flexure test of a SCC girder, a cost-effective instrumentation arrangement consisting of mechanical dial gauges is used to measure the relative longitudinal displacement. Responses measured from experiments on SCC girders conducted by the authors are used for numerical implementation and validation of the technique. Alternatively, interface slip is also evaluated by applying an analytical model which is based on first principles of mechanics. The values of interface slip computed by using the proposed technique are found to have close correlation with those of the analytical model. The effect of edge restraint on slip due to friction between steel and concrete is also studied.

PENELITIAN MENGENAI PENINGKATAN KEKUATAN AWAL BETON PADA SELF COMPACTING CONCRETE Handoko Sugiharto; Tedy Gunawan; Yusuf Muntu
Civil Engineering Dimension Vol. 8 No. 2 (2006): SEPTEMBER 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

High Early Strength Self Compacting Concrete, a new phenomenon in the world of concrete technology, offers advantages such as high workability, high durability and high early strength characteristic that can well be applied especially in the pre-cast concrete industry. In this study the properties of High Early Strength Self Compacting Concrete is achieved by the use of admixture (hyper plasticizer) Glenium Ace-80 and Silica Fume Rheomac SF 100 as filler. The water-binder ratio is kept in the low level. The workability conditions are tested using workability test like Slump Cone, V-Funnel, and L-Shaped Box. To test the High Early Strength characteristic compression tests are carried out on 1, 3, 7, 14 and 28 days of concrete age. The tests were focused on the age 1 and 28 days. The test result shows that the use of 2.5 % Glenium Ace-80 and 2 % Silica Fume can fulfill both workability and high early strength requirement of Self Compacting Concrete High Early Strength by keeping the value of water-binder ratio in the low level. Abstract in Bahasa Indonesia : High Early Strength Self Compacting Concrete (HESSCC), sebuah fenomena baru dalam dunia teknologi beton, memiliki keunggulan workability, durabilitas dan kekuatan awal yang tinggi, sehingga dapat diaplikasikan dengan baik khususnya pada dunia usaha pre-cast concrete. Dalam penelitian ini digunakan admixture (hyperplasticizer) Glenium Aceâ80 dan filler Silica Fume Rheomac SF 100 dengan water-binder ratio rendah. Pengujian workability dilakukan dengan menggunakan alat Slump Cone, V-Funnel dan L-Shaped Box, sedangkan tes kuat tekan beton dilakukan pada umur 1, 3, 7, 14, 28 hari. Tes kuat tekan ini diutamakan untuk umur 1 hari untuk kuat tekan awal dan 28 hari untuk kuat tekan akhir dari beton. Hasil penelitian menunjukkan penggunaan Silica Fume sebesar 2 % dan Glenium Ace-80 sebesar 2.5 % sudah mampu mencapai kriteria self compactible sekaligus kuat tekan awal (High Early Strength) yang baik pula, karena nilai water-binder ratio tetap dijaga pada nilai yang rendah

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

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

The Effects of Water Content Variation on Adhesion Factor of Pile Foundation in Expansive Soil Tjandra, D.; Indarto, .; Soemitro, R.A.A.
Civil Engineering Dimension Vol. 15 No. 2 (2013): SEPTEMBER 2013
Publisher : Institute of Research and Community Outreach - Petra Christian University

Seasonal change causes variations in soil moisture content. On expansive soil, this condition influences soil moisture content in the active zone, which is approximately in five meters depth. The water content variation induces the changes in soil characteristics and these changes have an impact to adhesion factor of piles. The main objective of this research is to investigate the influence of water content variations on adhesion factor of piles. A series of laboratory experiments were conducted considering water content variations. A pile model made of concrete was penetrated to soil sample which was placed in a cylindrical tube of diameter about 15 times the diameter of the pile model. The pile model was loaded until failure to investigate the friction capacity. The results showed that the change of water content have great impact to adhesion factor of piles and its friction capacity decreased up to eight times from drying to wetting condition.

EFFECTS OF VARYING CURING AGE AND WATER/CEMENT RATIO ON THE ELASTIC PROPERTIES OF LATERIZED CONCRETE Ata Olugbenga
Civil Engineering Dimension Vol. 9 No. 2 (2007): SEPTEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper reports the results of investigations carried out on the effect of varying curing age and water/cement ratio on the modulus of elasticity and modulus of deformability of laterized concrete. The test specimens were made with sieved samples of selected grain size ranges of laterite used as fine aggregates to replace sand in normal concrete. Batching was by weight. Three mix ratios of (1:1Â½:3), (1:2:4) and (1:3:6) were used. Water/cement ratio of 0.5, 0.6, 0.7 and 0.75 were used for each of the mix ratios. The specimens were tested at curing ages of seven to 28 days. The results showed that there was a corresponding increase in both modulus of elasticity and modulus of deformability of laterized concrete due to increase in curing ages. The mix proportion, compressive strength and water/cement ratio were found to have significant effects on both modulus of elasticity and modulus of deformability of laterized concrete.

An Evaluation of Industrial Facilities Defects in Selected Industrial Estates in Lagos State, Nigeria Oseghale, G.E.; Ikpo, I.J.
Civil Engineering Dimension Vol. 16 No. 2 (2014): SEPTEMBER 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

The study appraised the state of industrial facilities in selected industrial estates established between 1957 and 1981 in Lagos State by examining the nature and causes of facilities’ defects in the selected industrial estates. The buildings sampled were load bearing sandcrete block wall (1%), concrete framed structure (83%) and steel framed structure (16%). Data were sourced using structured questionnaire administered on the staff of maintenance department of 35 building materials and plastic manufacturing industries purposively selected and located in 18 industrial estates. Data obtained were analyzed using descriptive statistic. The study found the structural elements of the buildings, i.e. foundations, beams, walls, and floors satisfactory. Using the mean response analysis, the result showed that the most severe factors responsible for industrial facilities’ defects were combined effects of geo-climatic factors (2.35), combined effects of biological agencies (2.15), corrosion (1.98), and physical aggression on the facilities (1.71).

Fractional Critical Shear Stress at Incipient Motion in a Bimodal Sediment Yusron Saadi
Civil Engineering Dimension Vol. 10 No. 2 (2008): SEPTEMBER 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

The objective of this research was to examine and to quantify the stability of mixed grain sediment beds previously exposed to different time length of uniform antecedent flow hydrograph. The assessment of bed stability was carried out based on the observation of temporal pattern of eroded sediment during two identical stability tests with time varying flow and higher peak discharge. This was linked to the movement of individual sediment fractions to obtain fractional critical shear stress in a bimodal sediment mixture. The stability tests suggest a considerable increased in the stability of individual grain. Longer exposure time by antecedent flow clearly had an influence in the increasing stability of the bed. The increased rate of fractional critical shear stress during stability tests varied between 16 % and 35 % in the coarse mode whilst in the fine mode the rate of increase varied between 27 % and 39 %.

A REVIEW OF FACTORS AFFECTING BUILDING DEFECTS IN SINGAPORE Po Seng Kian
Civil Engineering Dimension Vol. 3 No. 2 (2001): SEPTEMBER 2001
Publisher : Institute of Research and Community Outreach - Petra Christian University

In developing countries, building maintenance technology is currently vastly underrated and ignored by owners, managers, and professionals. The building and construction authority of Singapore (BCA) has identified that the complaints about building defects have gone up in recent years with common problems such as leaky roof and walls, floor defect, and improper outlet pipe. This paper presents a brief description on building defect in use for commercial building as well as residential buildings in Singapore. The main objective is to highlight the important problems and suggest a greater participation of professionals in building maintenance. It also provides some site investigations photographs of various defects, which is expected to be useful for builders, architects, and others who deal with building materials.

Experimental and Theoretical Analysis of Hollow Steel Columns Strengthening by CFRP Amir Hamzeh Keykha; Masoud Nekooei; Reza Rahgozar
Civil Engineering Dimension Vol. 17 No. 2 (2015): SEPTEMBER 2015
Publisher : Institute of Research and Community Outreach - Petra Christian University

The need for strengthening and retrofitting is well known and extensive research is progressing in this field. The reasons for strengthening and retrofitting are numerous: increased loads, changes in use, deterioration, and so on. In recent years, the use of carbon fiber reinforced polymer (CFRP) for strengthening has shown to be a competitive method, both regarding structural performance, and economical aspects. Extensive research has been carried out in this field. However, most of the research has been undertaken on concrete structures and for confinement, flexural, and shear strengthening. Limited research has been carried out on steel structures strengthened with CFRP. This paper presents axially loaded steel columns strengthened for increased load. The topic is studied theoretically and through laboratory tests. The theory covers analytical methods. Carbon fiber reinforced polymers has been used to strengthen the columns. The tests have been undertaken on full scale specimens, non-strengthened for reference, partially strengthened and fully strengthened

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