JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR
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Pemodelan Struktur Perlapisan Bawah Permukaan Untuk Penentuan Bidang Gelincir Pada Daerah Rawan Longsor. (Studi Kasus Ruas Jalan Nasional 005 Lakuan – Laulalang Dan Ruas 006 Laulalang-Lingadan)
Full text linkCharacteristics of roads in Central Sulawesi at some point are an area of frequent landslides. The road segment in question, including the section 005 and section 006 which is a national road linking the province of Central Sulawesi and Gorontalo province. The link conditions that have often suffered landslides have disrupted access to transport and causing high transportation costs. This study aims to determine the geometry of the sliding plane at KM 509 and KM 513 using the method of geoelectric resistivity Wenner configuration with a path length measurement of 300 m and 5 m electrode spacing. The results of the study at two locations and modeling shows the layering structure resistivity value of which is at 100 Ωm - 300 Ωm and modeling results of 2-D geoelectric cross-section shows the sliding plane ground motion varies between 5 to 15 m. Value of resistance and sectional sliding obtained indicate that the location is vulnerable to landslides, and requires a comprehensive treatment to prevent landslides
Simulasi Efektivitas Model Berbagai Peredam Kebisingan (Studi Kasus : Kawasan Zona Bising di Kota Kendari)
Full text linkThe rapid economic activity in Kendari is followed by a rapid increase in traffic volume. This leads to one of consequence that increased noise levels and air pollution in Kendari, especially in zone which has a relatively high trip attraction. The purposes of this study are to analyze the effectiveness or insertion loss (IL) of various kinds/types of noise barriers. This research was conducted in some zones which have different types of noise barriers, different elevation or embankment barrier in the education zone, glass material barrier in the trade zone, concrete building barrier in the office zone, and combination different elevation and plant barrier in the hospital zone. The method used in the study is the Practical Method using a sound level meter, then is calculated by using Insertion Loss (IL ) equation, and Empirical Methods used the equation in the "Calculation of Road Noise Level". This research shows comparing various barriers in the noise zone that in various distances, 10,17,13 and 10 m, the type of glass barrier in in the trade zone has the highest effectiveness level or insertion loss of 16.9 dB, followed by concrete building barrier at 14 dB in the office zone. While, the level of effectiveness/insertion loss of different elevation/embankment in the education and the combination of plants and elevation/embankment barrier in the hospital zone was almost the same value about of 6.9 dB and 5.98 dB. At the same distance (10 m) of each zone, the glass was still higher levels of effectiveness of 12.25 dB, followed by concrete building barrier in 11,02 dB, by combination elevation and plants of 6.15 dB, and the type of elevation/embankment 6.05 dB. Thus, the types of barrier provide varying influence on the value of the effectiveness/insertion loss, and to improve the effectiveness /insertion loss of various barriers can be combined with distance change
STUDI KARAKTERISTIK CAMPURAN PERKERASAN LAPIS TIPIS ASPAL BETON (HRS-WC) DENGAN MENGGUNAKAN MATERIAL DARI SUNGAI BAHOMANTE DAN MATERIAL SUNGAI LASAMPI
Full text linkAsphalt concrete pavement mix should use material that meets specifications. Road construction in Morowali Regency uses material from Stone Crushero of Bahomante River and Lasampi River from Morowali. The purpose of this research is to understand the characteristic of HRS pavement mixture using Stone Crusher material of Bahomante River and River Lasampi. Determination of aggregate composition on HRS mixture was using sieve method. The gradation used in this study is the ideal gradation. The determination of optimum asphalt content (PKAO) was made using 6 variations of asphalt contents that are 6.0%, 6.5%, 7.0%, 7.5%, 8.0% and 8.5%. Characteristic testing using Marshall tools. The results of this study shows that the HRS mixture using the Stone Crusher material of the Bahomante River has hight density and stability compared to the mixture of HRS which uses a mixture of Stone Crusher material of Bahomante River and Lasampi River. The study also found that the KAO blend of HRS using Stone Crusher material Bahomante tends to be similar to that of a mixed HRS KAO that uses a combination of Stone Crusher material of Bahomante River and Lasampi River
Analisis Investasi Pengembangan Bandar Udara Mutiara Sis Aljufri Palu
Full text linkCentral Sulawesi is one of the six locations which determined as the economic growth corridor. It shows that infrastructure development is the main priority of this province. Mutiara SIS Aljufri Airport Palu is one of the several developed infrastructure in this region. The reason for this, the existency of transportation services is positively correlated to the economic and community development. Therefore, the government of Palu and the management of Mutiara SIS Aljufri Airport Palu agreed to improve the level of Mutiara SIS Aljufri Airport Palu as an international airport. This study aims to determine the developing investment of Mutiara Airport SIS Aljufri Palu. In addition, this study apply several analysis methods, such as, NPV, IRR and Profitability Index (PI) method. The result shows that the investment in the Mutiara SIS Aljufri Airport Palu is feasible based on the method of Net Present Value (NPV), Internal Rate of Return (IRR) and Profitability Index (PI) analysis.This investmental so provides enhanced services for users and air transport service providers. Based on the Gross Domestic Product (GDP) at constant 2000 prices in Quarter III (2014), the economic growth of Central Sulawesi Province increase compare to the the same quarter in previous year (2013). The proportion of economic growth is 6.58 % (y-on-y)
IDENTIFIKASI FAKTOR YANG MEMPENGARUHI PRODUKTIVITAS TENAGA KERJA WANITA PADA PEKERJAAN KONSTRUKSI
Full text linkUnderstanding and knowledge of the important factors, either positive or negative, that influencing female workers on construction job can be used to prepare a strategy to reduce inefficiency and to increase effectiveness of the project performance in order to reduce cost overrun and schedule delay in construction project. The aim of this study is to understand the most influential factors that affect the female workers’ productivity on the construction job. This study uses Relative Rank Index (RRI) method to determine the most influential factors that affect the female workers’ productivity on the construction job and this study also uses Spearmans Rank correlation method to find out the significance of the hypothesis of the associative influencing factors. Data collecting is done by literature study, questioners, and interviewing construction experts. The study results show that based on the contractors’ perception, the most influential factors that affect the female workers’ productivity on the construction job are age, salary, working permit, and family commitment. There is a good correlation between family commitment factor and age, salary and working permit factors
Pengaruh Serat Alami Terhadap Tingkat Kepadatan dan Intensitaskeretakan Tanah Lunak Pada Siklus Basah Kering
Full text linkThe use of natural fibers as a reinforcement material in clay becomes an alternative choice of materials widely used in the early decades of soil improvement techniques. This practice is to improve soil strength and resistance to cracks. This preliminary practice was done because the cost of procurement is relatively low cost and also available in almost all areas of Indonesia. Modification of the use of natural fiber with other materials such as synthetic fiber materials has begun to do a lot at this time. The objectives of this research are: (1) Analyzing the physical and mechanical of soft soil mineralogy characteristics, (2) Analyzing the soft soil mechanical behavior by reinforcing the Palm oil fiber (POF) of the empty fruit bunch of palm oil whether it can increase soft soil capacity, (3) shrinkage and crack intensity factor (CIF) of soft soil in wet-dry cycles. The results showed that the addition of natural fiber on soft soil tends to reduce the level of soil density and increase the water content of the soil, although not too large. The effect is only about max 2.35% on 2% fiber content. While the swelling potential and shrinkageof the soils can be reduced by fiber reinforcement. In the crack potential test showed a substantial reduction of crack intensity factor, whereas the addition of fibers in the soft soil can reduce cracks up to 444%. This shows that the fiber-soil has great ability in resisting the tensile strength of the soil-fiber interface due to the adhesion properties so that the soil is not easily cracke
ANALISIS KEMIRINGAN DASAR SALURAN PADA SALURAN TERSIER DAERAH IRIGASI DONGGALA KODI
Full text linkAs the plantation area, Donggala Kodi with mountainous topography made this region becomes an obstacle for farming people in which the function of the channel to deliver water from the river to the plantation area is not properly functioned. Tertiary channel of Donggala Kodi will highly possible to experience scour or erosion at the base of the channel, due to the large angle of the channel bottom slope so that the water velocity in the channel increased. This study aims to determine the performance of tertiary channel of Donggala Kodi. The research process begins with the collection of data which is then analyzed to evaluate the performance of tertiary channel. Donggala Kodi tertiary channel are using channel masonry 4,82 m/s, 5,49 m/s, 5,69 m/s, 5,61 m/s, 0,89 m/s, 5,03 m/s, 2,98 m/s, 3,76 m/s that its requirement maximum speed is 2.00 m/s and the minimum speed is 0.25 m/s. So it can be seen that the flow rate of the tertiary irrigation channel of Donggala Kodi do not meet the standards set by Standard Guidelines for Irrigation Planning Criteria Planning Section Channel KP-03, 2013
Dampak Lalu Lintas Akibat Aktivitas Best Western Coco Hotel Terhadap Kinerja Ruas Jalan Basuki Rahmat Palu
Full text linkPalu, the capital city of Central Sulawesi province is experiencing economic progress. Progress is shown by the supporting facilities such as one of the biggest hotel in Palu that is Best Western Coco Hotel at Basuki Rahmat Street.The existence of this hotel will increase human activities towards the hotel by using a vehicle, so that could increase the amount of vehicles in this area. The total additional volume of these vehicles can cause additional traffic load in Basuki Rahmat Street and influence its performance. This study was aims to determine the performance of Basuki Rahmat road on the existing condition and in the future without and with activity affected the hotel. The analysis conducted by using the method of Indonesian Highway Capacity Manual, 1997. In this research a survey of traffic volume, side barrier and the vehicle travel time were conducted. The survey was conducted on Thursday, September 4th 2014. Base on the result of analysis on the performance of Basuki Rahmat Street, without development for existing condition the value was obtained as DS = 0,30 and DS on 2014 condition = 0,47 by level of services (LOS) C. While the conditions of the development of the area obtained value of DS=0.31, DS condition 2014 = 0,48 by level of services (LOS) = C. The handling of road start from additional of median on the road section will continue to maintain the performance of roads in a state with a level of service B, by degree of Saturation in each direction in 2024 is 0.44 and 0.41
Karakteristik Pelayanan Angkutan Kota di Kota Palu (Studi kasus: Pelayanan Angkutan Kota di Universitas Tadulako)
Full text linkNowadays, students are less interested in using public transportation to the University of Tadulako.One reason is the travel time to arrive on campus can not be predicted. This study aims to determine the characteristics of urban transport users in serving the student travel, especially in Tadulako University. The researc were conducted using descriptive method. The research was carried on by distributing questionnaires to 131 respondents. The respondents are the city transport users who travel to Tadulako University. The results of the research and analysis shows that the ease of getting public transportation to travel to and from the University of Tadulako classified as difficult, so users should walk or using the motorcycle taxi (ojek) to get to the waiting place for public transportation. There are areas frequented by the public transportation so that users can negotiate several times and there are also certain regions where users can only do 1 time negotiations within the same time frame. The uncertainty of travel routes makes the travel time of user to the destination is unpredictable
Response ff The High Frequency Long-Span Lightweight Floor Due to Human Walking: Harmonic Response Analysis
Full text linkThis paper is an investigation of high natural frequency long-spanlightweigtht floor subjected to dynamic footfall loading of human activities. This study was carried out to examine the vibration response of the high natural frequency long-span lightweight floor, when harmonic response analysis was applied. Acceleration root mean square (RMS) was used as a method to determine the vibration response of the high natural frequency long-span floor model. The parametric studies of natural frequency of 7 up to 20 Hz and damping ratio of 0.5% and 2% were employed to investigate the response of the model.Increasing damping ratio of the model was found to have a significant effect on reducing acceleration RMS. However, increasing natural frequency of the high natural frequency long-span lightweight floor model demonstrated to have an insensitive influence on the acceleration RMS.