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INDONESIA
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR
Published by Universitas Tadulako
ISSN : 20886004     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 4, No 1 (2014)" : 7 Documents clear
PERENCANAAN ALTERNATIF PONDASI KONSTRUKSI SARANG LABA-LABA PADA PALU GRAND MALL Magfira, Dwi; B., Arifin; Rahayu, Astri
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Palu Grand Mall located at Diponegoro street, West Palu districts, PERENCANAAN ALTERNATIF PONDASI KCentral Sulawesi using foundation Konstruksi Sarang Laba-Laba( KSLL ). TheKonstruksi Sarang Laba-Laba is a combination of continuous flat concrete slab foundation system with a soil improvement system. This system is specifically utilizes the ground as part of the foundation structure. The purpose of thisresearchare to redesign KSLL foundation that is qualified for qgross ≤ qijin.Parameters that used are sondir test results, borlog, as well as laboratory testing such as bulk density and coefficient of consolidation (Cv). The analysis begins with the soil classification, load analysis using SAP. Then calculate the bearing capacity of the foundation, the maximum soil stress,  potential settlement, equivalent thickness, KSLLreinforcement dimensions, and RAB in Palu Grand Mall.Based onCPT test results on the location it was obtained that the soil classification is clay for soil at the depth of 0-12 m, clayey silt for soil at the depth 12-15 m and gravelly sand at a depth of 15-20 m. The results obtained from SAP is 356.80 ton for the maximum load. For one segment with a size of 8 mx 8 m the foundation bearing capacity was 335.54 ton/ m². Calculation of the area of load distribution which is reviewed each segment was 11.599m² for construction rib and 11.034 m² for ribsettlement. Control of qgros and qall are met, which a rib construction is qgros 30.762 t/m² <qall335.545 t/m² and rib settlement qgros 32.337 t/m² <qall335.545 t/m². From the calculation it was obtained thatthe maximum soil stress are 3,613 t/m², the potential settlement 4,256 cm for a period of 12 years. Equivalent thickness of rib construction is 125 cm and 170 cm for rib settlement. The reinforcement in the rib construction and rib settlement are using the size of Ø10-15 cm (As = 471 mm²) on the condition ρmin< ρ < ρmax. The budget plan calculation results showed that for earthwork the budget is Rp. 13,948,320 and Rp. 130.620.019,77 for KSLL foundation work per segment Keywords: bearing capacity, settlement, foundations, konstruksi sarang laba-laba
KETELITIAN METODE EMPIRIS UNTUK MENGHITUNG DEBIT BANJIR RANCANGAN DI DAS BANGGA Marcelia, Marcelia; Haricahyono, Totok; Abu, Asnah
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Characteristics of Bangga watershed that involves the shape, topography, type of soil, vegetation and areal usage, tends to enable the occurrence of run-off and erosion in the event of high rain fall. Therefore, it requires a flood design debit measurement to obtain the value of flood design for its river basin. The method used in this research is to compare the design values of the rain fall data using Rational, Melchior, Weduwen, Haspers and Unit Synthetic Hydrograph of Nakayasu methods towards the measured flood design debit using frequency distribution methods according to several statistical parameters. The results of the comparison of several methods towards flood debit design obtained from measured debit data using log Pearson III are: for the largest deviation is 2278.21 % for 2 years return period using Haspers method, whereas for the smallest deviations was obtained using Rational method which was 23.41  %, as well as for 5, 10, 25, 50 and 100 years return period, the values were 5.21 %, -2.38 %, -9.40 %, -13.38 % and -16.64 % respectively, hence it can be taken into conclusion that Rational method could be applied in designing water buildings in Bangga river basin. Keywords: design flood discharge, rainfall data, discharge data (measured)
ANALISIS BAHAN BANGUNAN PADA DAERAH RAWAN GEMPA DAN TSUNAMI DI PESISIR PANTAI TELUK PALU Fitriani, Tengku
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

This article points out building materials used in public dwellings in Teluk Palu shore. Based on materials used, types of buildings in Teluk Palu sea shore are devided into three: buildings made from bricks, concrete blocks, and timbers. The bricks and concrete blocks used are according the quality standards. The timbers are also commonly used, those are the second class/good quality. However, the timbers are not treated properly (not being preserved before used). Principles of building methods is revealed here. Keywords: building materials, conditions of houses, principles of earthquake and and tsunami   resistant houses
RASIO HUBUNGAN NILAI DAYA DUKUNG TIANG PANCANG BERDASARKAN PENGUJIAN SONDIR, KALENDERING DAN TES PDA PADA JEMBATAN PELAWA KABUPATEN PARIGI MOUTONG Gunawan, Muhammad; Oktaviana, Ida Sri; B., Arifin
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Bearing capacity of pile foundation bearing capacity is influenced by several factors, such as the amount of applied loads and non-homogeneous soil characteristics. To determine the bearing capacity of single pile foundation the static method is used on the basis of CPT data and dynamic methods based on dynamic pile and PDA tests. Pile foundations of the Pelawa bridge used in this study are located in the District of Parigi - Moutong. The study of literatures and secondary data such as the data of driven pile equipment, driven piles , CPT, dynamic pile tests, and PDA tests are used for analyzing the pile bearing capacity . Meyerhof method, Aoki de Alencar, LCPC, Price and Waldre, and Schmertmann are used to determine the bearing capacity of pile based on sondir (CPT) data. The dynamic pile tests data are used to calculate the bearing capacity of the piles by using methods of Hiley, Olsen and Flaate , Enginering News Record (ENR) , Janbu Mansur and Hunter , and AASHTO . The results show that  the lowest dan the highest of the ultimate bearing capacities  for static methods (CPT data) are  114.096 tons (Aoki De Alencar) and 305.479 tons (Schmertmann) respectively. Kalendering method (dynamic pile data) show that the lowest value of 284.22 tons were obtained from equation given by Hiley and the highest 1450.26 tons were obtained from equation given by  Janbu.The range of 171.2 tons - 174.5 tons were given for PDA test data. The ratio between CPT to PDAs results that are closest to the value of 1 which is 0.938 is the value that obtained from Meyerhof’s equation, while the ratio between dynamic method (kalendering) to PDAs results that are closest to the value of 1 which is 1,660 is the value that obtained from Hiley equation Keywords: single pile bearing capacity, CPT, dynamic pile test, PDA test
APLIKASI MODEL MANN-KENDALL DAN SEN’S (MAKESENS) UNTUK MENDETEKSI PERUBAHAN IKLIM Sutapa, I Wayan
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Various scientific studies illustrate that carbon dioxide (CO2) in the atmosphere layer that is a consequence of the result of the combustion of coal, timber, oil and gas, has increased by almost nearing 20 % since the start of the industrial revolution. Industrial area are built almost in the entire continent of the world has resulted in waste of “Greenhouse Gases (GHG) such as carbon dioxide (CO2), methane (CH4) and nitrousoksida (N2O) that caused the blanket effect. The purpose of this research was to detect the presence or absence of climate change and determine the projected climate change due to global warming. This research was conducted in the city of Palu, Central Sulawesi, using daily data and analyzed on a daily, monthly and yearly. Trend projections of climate change and changes in the method of analysis Makesens (Mann - Kendall and Sen 'S). The conclusion of this research is the change of climate in the city of Palu is characterized by slowly increasing temperature , increased precipitation and decreased evapotranspiration and the results of the calculation value of Z indicates Makesens method occurs climate trend, either positive direction (increasing) and negative (decreasing). Regression equation projected annual average temperature (as an example) is; f (year) = 0.018 (year - first year) + 26.931. Keywords: climate change, Makesens, Palu
ANALISIS STABILITAS LERENG DENGAN MENGGUNAKAN METODE BIOTEKNIK PADA RUAS JALAN TAWAELI – TOBOLI Laela, Laela; Rahayu, Astri; Dwijaka, Agus
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Tawaeli - Toboli is one of road that oftentimes undergo landslide. Most of these roads are in a mountainous area with steep slope angles . The road conditions worsened, especially the citizen do not know anywhere that is prone to landslides. The purpose of this study was to analyze slope stability using bioengineering methods. This method is used to increase the strength of the soil, and stabilize slopes and reduce erosion on slopes .The primary data for this study were obtained by conducting laboratory tests, including testing of bulk density, moisture content, density and shear testing directly without the influence of vegetation roots and the influence of vegetation roots to get the cohesion (c) and friction angle (ϕ ). Data field conditions include high slope and vegetation types. Analysis of slope stability calculated using the Slope / W. Calculation of earth pressure is calculated using the Rankine and Coulomb theories and calculations of stability against the collapse of the soil bearing capacity is calculated based on the equation Hansen and Vesic .From the results of the analysis showed that the presence of plant roots can increase the value of the cohesion and friction angle of the soil that can contribute to an increased safety factor of slope stability. Slope stability analysis using program Slope/W at the root of the condition without having the stability of the landslide is smaller compared with the conditions of using the roots , the results of the calculation of the shear strength of the soil without roots is smaller than the roots and results of calculations using the stability of the retaining wall retaining wall with the same dimensions at which point I Km 17 ± 300, the cantilever type retaining walls with roots influences security ineligible dimensional slope stability due to the retaining wall is not in accordance with the conditions of soil containing the roots of plants. Increasing the value of cohesion and angle of friction on the ground with roots influences can maintain the stability of the slope. Keywords: retaining walls, bioengineering, landslide
PEMODELAN ESTIMASI BIAYA KONTINGENSI BERBASIS RESIKO PADA PROYEK ENGINEERING-PROCUREMENT-CONSTRUCTION Wahyu Adi, Tri Joko; Yunwanti, Suly
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

EPC (Engineering-Procurement-Construction) Project is a project in which the process of design, procurement and construction are carried out by a construction company. The complexity of EPC project resulted in many uncertainties that must be addressed by the project implementers. To anticipate the risk of cost overruns due to the uncertainty, project implementers need to prepare the unexpected costs. Currently, implementation of contingency estimation is done by directly increasing project costs by 5% -10%; while in theory, the amount of the contingency cost is estimated using Montecarlo simulation techniques. This simulation techniques, despite widely used, still has the disadvantage. Risks are assumed by providing lower and upper limit values of the cost of the risks that might occur in the project activity. In fact, every activity has different risk and different weights of impact. The objective of this research is to create a contingency-based cost estimation model by considering the types of risk and its impact on project activity. Project Risks were obtained from preliminary surveys and literature studies. Probability weights were analyzed using probability-Impact matrix and pair-wise comparison. Contingency cost calculation was done using Montecarlo simulations. For the purpose of model validation, procurement & Gas Piping Distribution project in Greater Jakarta was used as case study. The results of case study simulation showed that the contingency cost is 4.57% of the project budget, with a deviation of 0.82%. The accuracy test of the model against the actual cost of the project showed 0.63% difference to the simulation results. Therefore the proposed model is proved has good accuracy. Keywords: risk analysis, contingency cost,  Montecarlo Simulation, EPC Project

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