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Teknisia
Published by Universitas Islam Indonesia
ISSN : 08538557     EISSN : 27460185     DOI : 10.20885/teknisia
Core Subject : Engineering,
Engineering
Jurnal Teknisia terbit pertama kali pada bulan April 1996. Pada awal berdirinya, Jurnal Teknisia merupakan jurnal ilmiah berkala yang diterbitkan tiga kali setahun oleh Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia, Daerah Istimewa Yogyakarta yang berisi artikel-artikel bidang teknik sipil, teknik lingkungan, dan arsitektur.
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Articles 137 Documents
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Evaluasi Kinerja Halte Bus Dengan Metode Servqual (Studi Kasus Halte Trans Jogja Trayek 1A, 1B, 2A, Dan 2B) Nur Baskoro Adi; Sigit Priyanto; Siti Malkhamah
TEKNISIA Vol. XXV, No. 1, Mei 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss1.art2

Abstract

In 2008, the city of Yogyakarta adopted a buy the service scheme in the Trans Jogja public transport aiming to improve the quality of public transport and reduce congestion. Based on the study of GIZ-SUTIP in 2012, there were several problems in Trans Jogja, including inadequate bus stops and excessive staff numbers. The aim of our study were to evaluate and improve bus stops performance and analyze bus stop service quality according to passenger perceptions. This study is a descriptive study using purposive sampling technique, conducted on 12 Trans Jogja bus stops and 180 respondents. The data obtained were analyzed using MS Excel and SPSS 22 computer program. The results showed that bus stop performance was not good on headways, waiting times, and on-time performance. The clearance time of far-side bus stops was shorten than near-side and mid block bus stops. The near-side and far-side bus stops were accessed by passengers on foot. The service quality of the Trans Jogja shelter does not match the expectations of the passengers with a Gap Servqual value of -0.790. The service attribute was in quadrant C of the Cartesian Diagram, that requires corrective action from the Trans Jogja operator.
ANALISIS POTENSI LIKUIFAKSI PADA PASIR VULKANIK DI PANTAI GLAGAH KULONPROGO BERDASARKAN DATA N-SPT Hanindya Kusuma Artati; Widodo Pawirodikromo; Edy Purwanto
TEKNISIA Vol. XXV, No. 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss2.art6

Abstract

One of the most causes of damage to structures during earthquake is a liquefaction. Liquefaction happened in a loose sand which saturated under earthquake shaking.  Earthquake shaking will cause cyclic loading to the surface of the ground which potential for occurrence of liquefaction. The liquefaction phenomenon is a soil behavior under cyclic loads that occurs in just a few moments. Due to the short cyclic load, the soil mass suddenly changes from a solid limit to a liquid limit or has a main consistency such as liquid. Liquefaction events during an earthquake can be characterized by the presence of ground movement in the horizontal direction, seepage water out from fracture of the ground, movement of sloping or descending buildings, displacement of ground advance, and landslides. This study took a case study in Glagah Beach at Kulonprogo Regency. That is beach areas which is a landform alongside a body water which consist of loose particles such as sand where Yogyakarta International Airport (YIA) is located. Analysis was carried out to determine the potential of liquefaction based N-SPT data using the Seed, Martin & Lysmer (1975).  Based on these data, The Cyclic Stress Ratio (CSR) value is calculated, which is the ratio between the average shear stress caused by the earthquake with the effective vertical stress in each layer and the value of the Cyclic Resistance Ratio (CRR), which is the amount of soil resistance to liquefaction. The analysis in the Kulonprogo Regency area is an area that is considered to require liquefaction. Analysis of liquefaction potential based on on N-SPT data with the Seed, Martin & Lysmer (1975) method on a 6,3 magnitude earthquake. The Result indicate the potential for liquefaction occurs up to a depth of 8,5 meters.
KARAKTERISTIK DAN PARAMETER SUBDUKSI SUMBER GEMPA PULAU JAWA Wisnu Erlangga
TEKNISIA Vol. XXV, No. 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss2.art4

Abstract

The movement of three large plates makes earthquakes frequent in Indonesia. The earthquake caused a lot of damage and casualties. One of the causes of the high risk of earthquake disasters is the large population. Java Island is the island that has the largest population in Indonesia. In addition, earthquakes often occur in Java and its surroundings, which cause a very high risk of earthquake. A further disaster that occurs after an earthquake is a tsunami if the earthquake originates from the ocean (earthquake originates from subduction). Therefore, this study examines the characteristics and parameters of earthquakes originating from subduction around Java Island which consists of 10 zones (5 of megathrust zone and 5 of benioff zone). The method used to determine these parameters is the Guternberg-Richter's law method and the maximum likely hood / characteristic method. The results of these two methods have differences due to earthquake uncertainty factors. In the application of earthquake hazard analysis, these two methods are used for calculations by increasing the percentage of use in the characteristic method. This is because geological evidence shows that characteristic earthquakes occur more frequently than earthquakes predicted from the gutenberg-richter model. In addition, it is also necessary to know the subduction zone dip angle for modeling 3D earthquake sources. Each subduction zone around the Java Island is divided into 5 areas. The megathrust zone is at a depth of up to 50 km and the benioff zone at a depth of more than 50 km. The result shows that the largest dip value is in the Java 3 megatrust zone with 14.667 and the Java 2 benioff zone with 53.667.
KUAT TEKAN SANDWICH PANEL EXPANDED POLYSTYRENE PENAMBAHAN PLESTERAN DAN KAWAT LOKET Sustika Pratiwi; Ashar Saputra; Ali Awaludin
TEKNISIA Vol. XXV, No. 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss2.art2

Abstract

Housing needs are increase up to one million units per year. Indonesia is also one of the countries that is often affected by earthquake so that the people and Indonesian government need to work on making simple, fast and safe houses. One way is use lightweight panel walls. To increase the strength of the panel wall, reinforcement is needed. This study aims to determine the effect of adding plaster and wiremesh to the compressive strength of expanded polystyrene (EPS) sandwich panel walls. This study uses precast specimen expanded polystyrene panel walls size 180 cm × 61 cm. Consists of panel walls without reinforcement, panel walls with plaster and wiremesh space of 1 cm and 2 cm. The results of the average vertical compressive strength of the EPS panel wall obtained at 0,62 MPa, the panel with the addition of plaster and wiremesh with 1 cm space of 0,77 MPa and the highest compressive strength obtained from panel with the addition of plaster and wiremesh with 2 cm space of 0,84 MPa. The results showed that the addition of plaster and wiremesh will increase the compressive strength of expanded polystyrene sandwich panel walls.
ANALISIS KINERJA DAN TINGKAT PELAYANAN FASILITAS PEJALAN KAKI DI KAWASAN STASIUN KARET Firman Prayogi; Sigit Priyanto; Imam Muthohar
TEKNISIA Vol. XXV, No. 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss2.art1

Abstract

Karet Station has an average number of passengers at 12,594 people per day in 2018, has a large potential of pedestrian trip generation. The basic problem experienced by pedestrians at Karet Station is when they (KRL passengers) leave the station, they cannot find a clear pedestrian path to accommodate their movement towards other public transport facilities. As the result, the pedestrians scattered and even crossed the road and stopped the public transportation arbitrarily. This activity causes a high risk of accidents and traffic flow constraints caused by reduced capacity of road section due to public transport activities while waiting, lowering, and raising passengers. The purpose of this research was to analyze the pedestrian lane characteristics, and service level based on technical guidelines and stated preferences of passangers. In this research, the primary data were collected by conducting direct surveys in study area to get characteristics of pedestrian, traffic flow, and passanger perception about pedestrian facilities performance. Analytical results from this study conclude that from technical guidelines approach, there are two sidewalk segments in the Karet Station area which require special attention with the level of service categori at C and E level, and  also requires improved pedestrian crossing facilities from zebra cross type to be underpass or pedestrian bridge. Based on stated preferences approach, from the assessment of 24 service attributes, there are 6 attributes of lowest performance services included in quadrant I of Importance Performance Analysis (IPA) matrix which are the main priority that must be resolved immediately.
RESPON TIANG DALAM KELOMPOK TERHADAP GAYA LATERAL METODE STRAIN WEDGE Sumiyati Gunawan; Niken Silmi Surjandari; Bambang Setiawan
TEKNISIA Vol. XXV, No. 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss2.art5

Abstract

Calculation of lateral bearing capacity of the foundation becomes very important if lateral loads dominate, for example the foundation on bridges, tall buildings, and tower structures. Pile foundations that receive lateral loads, are generally calculated based on the ability of a single pile even though in its application, pile groups are always used. The carrying capacity of the pile group in lateral direction is not the same as the sum of the carrying capacity of a single pile in a pile group. This is due to the differences in the reduction factor supported by the force, direction of the force, number of piles in the group, position of piles in the group, diameter of the piles, the distance between the piles, stiffness of pile, type and stiffness of the soil. This research will analyze the bearing capacity of the pile group using the strain wedge method in the 1x3 and 3x1 configurations with a round steel pipe with a diameter of D = 0,4 m and a square steel pipe with a width of B = 0,429 m; length varies between L = 8,0 m to L = 20,0 m, 2 m intervals and the ratio of pile distance and diameter S/D = 3, on soft silt sand soils with an inner friction angle of 10o and a weight volume of 1200 kg/m3. The results obtained, in the configuration 1x3 the lateral resistance of the square pile is greater than the circle pile about 2,1 times at all pile positions in the group, with S/D = 3. So if L = 10 m, the interaction between the pile and soil insignificant so that the lateral bearing capacity of each pile is the same as a single pile, the multiplier factor for square and circular piles is almost the same. In the configuration 3x1 the lateral resistance of the square pile is greater than the circle pile about 1,4 times at all pile positions in the group. For piles with length L = 10 m, the multiplier factor of the square pile is greater than the circle pile by 1,07 times at all pile positions in the group, and for L = 10 m, the multiplier for the circle pile is greater than the square pile by 1,04 times in all pile positions in the group.
MENGUKUR KECEPATAN DAN PANJANG ANTRIAN MENGGUNAKAN APLIKASI GOOGLE MAPS Setiawan, Setiawan; Munawar, Ahmad; Irawan, Muhammad Zuhdy
Teknisia Vol. XXV, No. 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol25.iss2.art3

Abstract

Traffic survey is the main activity and is very important to get data on-road service performance for various traffic engineering purposes, transportation planning, road technical planning, and general planning (planning & programming). Google Maps could predict traffic conditions thanks to data collection collected from global positioning system (GPS) features. This study aims to analyze the comparison of travel speed data and queue length of Google Maps and field survey data. The survey conducted a vehicle speed survey using the MCO method while the length of the queue by counting the number of vehicles and the length of the queue at the intersection for comparison using the Google Maps application in the form of screenshot images or video. Theanalysis used by the Independent sample T-test is a type of statistical test that aims to compare the average of two groups that are not paired with or related to each other. Based on the T-test results, there is no difference in speed between survey results and Google Maps on Kusumanegara and AM Sangaji Utara roads. Based on the T-test results, there is no difference in queue length between the survey results and Google Maps on Kusumanegara and AM Sangaji Utara roads.
KECEPATAN GELOMBANG GESER (VS) DAN KETEBALAN SEDIMEN (H) DI KABUPATEN KLATEN DARI DATA MIKROTREMOR Anggit Mas Arifudin
TEKNISIA Vol. XXVI, No. 1, Mei 2021
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol26.iss1.art6

Abstract

Research on Shear Wave Velocity (vs) and Sediment Thickness (h) in Klaten Regency, Central Java from field microtremor data aims to determine the thickness of sediment or soft sediment as one of the factors of high and low earthquake vulnerability. Microtremor data was collected using a three-component TDS 303 seismometer, covering 111 measuring points in the Klaten Regency area. In this study, the sediment thickness was calculated using the equation shear wave velocity (vs) divided by four times the dominant frequency (fg). The dominant frequency (fg) value is obtained from the HVSR curve while the shear wave velocity value (vs) used in this study is the inversion value of the HVSR curve which is modeled based on borlog data at the Wedi Church, equated for all measurement points. On the map of the shear wave velocity distribution at each microtremor measuring point has a vs value, this value is used to calculate the thickness of the sediment at each point. So that the distribution of the thickness value of the sediment at each point is obtained, then a thickness map is made covering the study area. The results showed that in general the research area has a Vs value in the results of the HVSR curve inversion ranging from 130 m/s to 570.83 m/s, Vs average 275.68 m/s. The areas with vs are relatively high in the southern part of Gantiwarno, Wedi, and Bayat subdistricts that are directly adjacent to the hills of Gunung Kidul. Areas with relatively low value vs are in the area of Prambanan Subdistrict, Northern Wedi Subdistrict, Trucuk Subdistrict, Jogonalan Subdistrict, South Klaten District, Central Klaten District, and Kalikotes Subdistrict. For sediment thickness (h) ranges from 5,105 m to 113,648 m. Areas with relatively high sediment thickness are located in parts of Wedi Subdistrict with a thickness of up to 110 m.  Areas with medium thickness (around 60 to 90 m) are in the area of Gantiwarno sub-district, Prambanan district, and the southern part of the Jogonalan sub-district. In the area of Bayat District it has a low thickness (about 5 to 30 m) located in the proves and mountains of the Paseban area and the tomb of Sunan Pandanaran. This shows that areas with high sediment thickness, namely in Wedi District, will also have a high level of earthquake vulnerability.
PERBANDINGAN KERUSAKAN AKTUAL DAN PERKIRAAN PADA BANGUNAN TEMBOKAN TANPA PERKUATAN AKIBAT GEMPA Jafar Jafar
TEKNISIA Vol. XXVI, No. 1, Mei 2021
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol26.iss1.art5

Abstract

On April 18, 2018, an earthquake hit Banjarnegara Regency, Central Java. The earthquake was measured M4.4 at a depth of 4 km and caused damages to buildings in several villages within Kalibening District. Predicting the future earthquake events is difficult. However, it is possible to estimate the potential damage caused by an earthquake event. FEMA has developed a methodology called HAZUS to estimate the potential loss and damage caused by earthquakes. This study compared the level of actual damage to buildings subjected to the 2018 Banjarnegara earthquake with the estimated damage to buildings obtained using HAZUS. The real damage is obtained from the field survey while the estimated damage is obtained from the HAZUS modeling. The object of this research is the unreinforced masonry low-rise buildings (URML) in Kasinoman Village, one of the villages that suffered the most subjected to the 2018 Banjarnegara Earthquake. The result of this study indicates the actual damage has a higher mean damage ratio (20,40 %) compared to the estimated damage (11.66%). HAZUS is developed according to the performance and experimental data of the buildings in the US therefore it might not be compatible with the building in Indonesia, especially surveyed buildings in Banjarnegara. The reason is the buildings in the US fulfilled the earthquake-resistant building provision meanwhile the surveyed buildings did not.
PENGARUH FAKTOR GEOMETRIK SUMUR RESAPAN TERHADAP PERENCANAAN DIMENSI SUMUR RESAPAN DAN PENGURANGAN LIMPASAN PERMUKAAN Sri Amini Yuni Astuti
TEKNISIA Vol. XXVI, No. 1, Mei 2021
Publisher : Jurusan Teknik Sipil, Fakultas Teknik Sipil dan Perencanaan, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/teknisia.vol26.iss1.art2

Abstract

To solve the problem of flooding, and to conserve groundwater, many infiltration wells have been built. To plan the dimensions and number of infiltration wells, that is influenced by the geometric factor of an infiltration well. Therefore, this paper will discuss the influence of infiltration well geometric factor on the dimensional planning and the number of infiltration wells needed, as well as those that are feasible to build based on existing land limitations. The planning of infiltration wells uses the Sunjoto method. The study location is on the UII integrated campus. Rainfall data were taken from Prumpung station in 1998 - 2016. The larger the infiltration well geometric factor, the smaller the number and dimensions of infiltration wells. For example, in the D3 Ekonomi complex, for a type of infiltration well with a diameter of 1,5 m and a height of 4 m, with , 8 units are needed, while an infiltration well with  requires 7 units. Likewise for other complexes. With the limited land available, the greater the infiltration well geometric factor used, the reduction in surface runoff is not much change, almost the same, namely 59,73 % with  and 59,79 % with F=7,4022 m.

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