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INDONESIA
Jurnal Ilmiah Teknik Sipil
Published by Universitas Udayana
ISSN : 14111292     EISSN : 25415484     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Jurnal Ilmiah Teknik Sipil (p-ISSN: 1411-1292; e-ISSN: 2541-5484) is an online periodical journal of science that is published twice a year, in January and July by Civil Engineering Department, Faculty of Engineering, Udayana University. Jurnal Ilmiah Teknik Sipil is a media to publish the results of scientific research students, academics, practitioners and observers in the field of civil engineering including structure, construction management, water resource management, transportation, geotechnical and environmental engineering.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol. 9, No. 1 Januari 2005" : 6 Documents clear
AKSELERASI PENYELESAIAN PROYEK DENGAN ANALISA PERTUKARAN WAKTU DAN BIAYA ( TIME COST TRADE OFF ) Dewa Ketut Sudarsana
Jurnal Ilmiah Teknik Sipil Vol. 9, No. 1 Januari 2005
Publisher : Department of Civil Engineering, Udayana University

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Abstract

Three main objective in the constructing construction project thereare cost, time and quality. Cost and time have great relationship and depending oncethan the other. Some time in the field we founded nonconform between the duration ofcompletion in the contract with the realization. On the case studi of PembangunanStadion Olah Raga Buruan in Kecamatan Blahbatuh, Gianyar, the owner need thatproject be completed earlier than the agreement completion. The influence ofacceleration completion project with the project cost need to study.In this case the CPM (Critical Path Method) be used with compressed the duration ofactivities on the critical path and do time cost trade off analysis. The project costmeans is the total cost project. The total project cost are direct cost (material, workersand equipment) and indirect cost (the other direct cost).The outcome of analysis be founded that accelerate (crash) maximum 65 days done, sothe earliest completion by 265 days without total project cost added. The projectcompletion optimum be founded too, with project duration 316 days and project totalcost minimum amount Rp. 13.358.425.131,28, that’s below 0.55 % than project cost in contract. This phenomenon show that accelerate the duration completion project notalways be increasing the total project cost, because the duration of completion projectin the contract probably does not the optimum duration of completion.
INVESTIGATION OF WITHDRAWAL RESISTANCE OF LAG SCREWS FROM BANGKIRAY WOODS I Ketut Sudarsana
Jurnal Ilmiah Teknik Sipil Vol. 9, No. 1 Januari 2005
Publisher : Department of Civil Engineering, Udayana University

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Abstract

Lag screws are commonly used in knock down constructions where screwsis not possible. The resistance of the lag screws is provided by friction betweenthreaded parts and wood. This paper presents experimental investigation ofwithdrawal strength of lag screws embedded into Bangkiray woods. The objectives ofthe investigation were to determine the behavior of embedded screws subjected towithdrawal forces.To meet the experimental objectives, three specimens of an 8 mm diameter lag screwembedded into a 80 x 150 x 600 mm bangkiray woods were assembled and tested tofailure. The lag screws were 100 mm long with threaded length of 60 mm (effectivelength of 55 mm). However, in this experiment, only 40 mm of the threaded part waspenetrated into the main wood and giving the effective penetration length of 35 mm.Direction of the screw was perpendicular to wood grains. Two equal point loads wereapplied on both sides of the screws through two pieces of 50 x 70 x 500 mm bangkiraywoods connected using screws. The loads were increased incrementally every 1 kN or1kN/minute. Axial deformations of the screws were measured using a dial gaugelocated at the center of the lag screws for every load increment.The results show that failure modes occurred due to failure of the woods which werebearing failure of side beams and pull-out of the screws due to lose of main beamresistence. These types of failure were mainly dictated by the absence of washersbetween the bearing wood and the head of the screws. Slip of the embedded part atmaximum load is about 9.25% and 10.93% of the embedded length. The averagemaximum withdrawal strength of the screw embedded 40 mm into bangkiray wood is12.0 kN, excluding data of specimen S1. Prediction of withdrawal strength forembedment length of 60 mm is 24.10 kN.
STUDI PERBANDINGAN FAKTOR REDUKSI (f) DARI TAHANAN GLOBAL DENGAN FAKTOR REDUKSI PARSIAL MATERIAL PADA KASUS BETON BERTULANG DENGAN METODE LRFD Kadek Diana Harmayani
Jurnal Ilmiah Teknik Sipil Vol. 9, No. 1 Januari 2005
Publisher : Department of Civil Engineering, Udayana University

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Abstract

A reinforced concrete structure can guarantee its safety by giving strengthcapacity or design strength more than any combination of working load effect. Designstrength can be obtained by multiplying normal strength with reduction value of fstrength less than one and nominal load is multiplied with the load factor with the valuemore than one. It can be written as factored resistance ³ effect of factored loads.Resistance factor can be expressed in some ways. Such as ACI Building Code wasexpressed as fRn ³ D Dn + L Ln, where f was resistance factor and D, and L wereload factor for dead load and live load. Meanwhile CEB explained about resistancefactors with reduction factor directly to its material, fc`/c and fy/s where c and s were partial material of safety factor or under strength material factors for concrete and steel.Herewith result from concrete material variability, the variety coefficient compressionstrength of concrete ( Wfc) had great influence to the reduction factor both globalreduction factor from ACI and material partial reduction factor from CEB. The increaseof load ratio (L/D) would add space between factor of dead load (D) and live load (L)were wider. With the increase of the value index gave the increase of safety condition.The result of the study was obtained that the influence of small dimension was to theglobal reduction factor and material partial reduction factor. After comparing the resultsobtained from the calculation method using global reduction factor (ACI) with materialpartial reduction factor (CEB), it could be drawn a conclusion that for beam and coloumusing global reduction factor, its capacity to hold dead load was more than 13 % thanmaterial partial reduction factor.
ALTERNATIF PEMAKAIAN JENIS-JENIS BAHAN PENGISIAN (FILLER) PADA CAMPURAN ASPHALT CONCRETE HOT MIX A.A. Ketut Ngurah Tjerita; I Gusti Putu Suparsa
Jurnal Ilmiah Teknik Sipil Vol. 9, No. 1 Januari 2005
Publisher : Department of Civil Engineering, Udayana University

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Abstract

The safety and comfortable of the user of road is determined by quality ofits surface course which can be stated by the index value of its surface. The use of HotRolled Sheet (HRS) as a surface course is very famous in Indonesia. So it is a need toimprove its quality. Because of the lack of its filler at a natural aggregation and thelimit of production of stone ash from the stone crusher, it is required an endeavour tofind out the alternative filler which can replace the stone ash functions in the HotRolled Sheet mixture. For this reason, it will be tried to use the ash of limestone and“Portland” cement as alternative filler. A research has been undertaken in a laboratoryby making a specimen as a sample and treatment to different fillers, a various asphaltquantity and aggregation of gradation which fulfill the specification from Bina Marga.The result shows that by different fillers will make a different characteristic ofmixture, but on certain asphalt quantity the three treatments that is filler of stone ash,ash of limestone and “Portland” cement, still in line with the specification from BinaMarga.
INTERAKSI ANTARA GAYA AKSIAL DAN MOMEN PADA KOLOM BETON DENGAN TULANGAN BAMBU I Nyoman Sutarja; I Ketut Sudarsana
Jurnal Ilmiah Teknik Sipil Vol. 9, No. 1 Januari 2005
Publisher : Department of Civil Engineering, Udayana University

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Abstract

The use of bamboo reinforcement in reinforced concrete structure has notbeen investigated extensively. The material is expected as an alternative of steel reinforcementin a certain condition. Therefore, this research is conducted to investigatethe capacity of columns reinforcing using bamboo in term of their axial strength andmoment as well as their interactions.Twelve columns reinforcing of bamboo are made and tested. Column dimensions of150 mm x 150 mm x 900 mm were cast using 15 MPa concrete obtained from ASTMstandard cylinder test of age of 28 days. Two group specimens based on its total reinforcementareas were made namely 400 mm2 and 600 mm2. Six variations were madefor each group to incorporate variation of applied load eccentricities during the test.The load eccentricities were 0 (pure axial), 70 mm, 100 mm, 150 mm, 200 mm and ¥(pure bending).Test results show that the experimental interaction between axial force and bendingmoment of the column reinforced with bamboo agree well with the analytical resultsfollowing the expression for column reinforced with steel reinforcement. Taking thetensile strength of the bamboo 50% of the rupture strength, give the experimentalcolumn capacities were close to the analytical results.
ANALISA PENURUNAN PONDASI TIANG PANCANG KELOMPOK PADA TANAH LUNAK DENGAN METODE TERZAGHI, SKEMPTON-BJERRUM DAN CODUTO I Ketut Swijana; Wayan Redana; Bakir Hadiyoto
Jurnal Ilmiah Teknik Sipil Vol. 9, No. 1 Januari 2005
Publisher : Department of Civil Engineering, Udayana University

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Abstract

Pile foundation is utilized to transfer load of structure to foundation soil.The objective of this study is to predict settlement based on field test data. Threemethods were utilized which are Terzaghi, Skempton-Bjerrum and Coduto. Based oncomparison of prediction and field data it is possible to find correction factor in orderto be able to gain a more accurate prediction of settlement.By utilizing published data of building at MIT campus supported using pilesundergoing settlements which has been recorded about 20 cm in 48 years. Backanalysis undertaken in this study found a correction factor for Terzaghi of about 25.27%, Skempton-Bjerrum of about 16,59 % and Coduto 6,58 %. In other words thecorrection factor for Terzagi is 0.747, for Skempton-Bjerrum is 0.834 and Coduto is0.934.This study concluded that the settlements of piles founded on Surabaya soil by usingTerzagi is 7,5281 cm, Skempton-Bjerrum is 6,7529 cm and Coduto is 6,0225 cm.After application of the correction factor as mention above these methods revealedsettlements prediction of about 5,6268 cm. This settlement is predicted finished in25,7672 years.

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