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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 6 Documents
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Search results for , issue "Vol. XXVI, No. 1, Mei 2021" : 6 Documents clear
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.
ANALISIS ANGKUTAN SEDIMEN DASAR (BED LOAD) PADA SALURAN IRIGASI MATARAM YOGYAKARTA Anggi Hermawan; Erwin Nur Afiato
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.art3

Abstract

In the last decade, the problem that has occurred in the Yogyakarta Mataram irrigation channel is the occurrence of sedimentation in the channel. This has an impact on reducing the cross-sectional discharge capacity of the canal and resulting in the supply of irrigation discharge to agricultural areas to be not optimal, so that agricultural productivity in the Mataram Irrigation Area will also not be optimal. The sediment transport (bed load) that occurs in an open channel can be approached using the empirical equation, including the Einstein, Meyer - Peter Muller and Frijlink equations. Sediment transport events that occur in the channel are stated based on the magnitude of the flow shear stress which exceeds the critical shear stress of the sediment particles. The quantity of sediment transport in the channel is stated on the logarithmic curve of the relationship between the froude number (fr) to the sediment transports (qb). The Curve  explains that the increase in the froude number (fr) that occurs on each section of the channel  will be directly proportional to the increase in the quantity of transport sediment (qb). The largest sediment transport occurred at the site of the Gambang and Nambongan channel section with a prediction of sediment transport of 3.57 m3/day and 3.67 m3/day, respectively. Thus, the potential for sediment transport that will settle in the downstream area is 3.67 m3/day.
STUDI ANALISIS KAPASITAS NOMINAL PELAT KOMPOSIT BETON-DEK BAJA METODE ULTIMIT, TEGANGAN KERJA DAN SDI-ANSI 2017 Hariadi Yulianto
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.art1

Abstract

Today, the most efficient slab construction method is the concrete-steel deck composite slab because there is no need to remove the deck after the concrete casting process. Nevertheless, reinforced concrete standard code (SNI 2847:2019) not emphasized a specific method to calculate the concrete-steel deck slab's nominal capacity. The code is embraced by the plastic method analysis, which is calculated the nominal capacity of the structure on the ultimate condition. However, several laboratory tests reveal a slip behavior between the concrete and steel deck before the slab reaches its ultimate condition. Therefore, alternative methods are needed to analyze the nominal capacity of concrete-steel deck slab. This study compares three different nominal capacity analysis methods to a laboratory test result. Those methods are ultimate, working stress, and SDI-ANSI (2017). The average error value of those three methods compared to laboratory test results in 35,57%, 9,48%, and -10,31% for ultimate, working stress, SDI-ANSI (2017) consecutively.it can be concluded the working stress method is the most accurate. However, SDI-ANSI (2017) is the conservative one, while the ultimate method is not recommended to analyze the concrete-steel deck slab's nominal capacity.
EVALUASI KONDISI LINGKUNGAN DAN SARANA PENYELAMATAN PADA GEDUNG PERKULIAHAN TERHADAP BAHAYA KEBAKARAN Fadillawaty Saleh; Sinta Rizky Amalia; Hakas Prayuda; Lilis Tiyani; Bella Lutfiani Al Zakina
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.art4

Abstract

Many aspects must be considered in the building's design so that the construction is sturdy and can be used according to its function. An important aspect that is often overlooked is the aspect of fire safety. This study aims to evaluate environmental conditions and safety facilities in buildings against fire hazards. The buildings reviewed are the Postgraduate Building, E6, E7, and F3 of the Muhammadiyah University of Yogyakarta. The research method used in this research is a qualitative approach, and the primary data is obtained by direct observation in the field and interviews with the person in charge of the building. This study indicates that the environmental conditions of the postgraduate building, E6, E7, and F3, are not in good condition because each building gets a condition value of 51.67%; 50.56%; 52.22%; and 50%. The rescue facilities in the postgraduate building, E6, and E7 are good; although there are some shortcomings, the value of the condition of each building is 85.98%, 87.41%, and 87.41%. The rescue facility in the F3 building is quite good, with a condition value of 65.81%.

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