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INDONESIA
Inersia : Jurnal Teknik Sipil dan Arsitektur
ISSN : 0216762X     EISSN : 2528388X     DOI : -
Core Subject : Engineering,
INERSIA is stand for INformasi dan Ekspose hasil Riset Teknik SIpil dan Arsitektur. This scientific journal is managed by the Department of Civil Engineering and Planning Education, Faculty of Engineering, Yogyakarta State University, in cooperation with the Persatuan Insinyur Indonesia (PII). It publishes and disseminates research results from lecturers and post graduate students from various universities in Indonesia, which has contributed to the development of science and technology, especially in the field of Civil Engineering and Architecture. INERSIA is published twice a year, in May and December.
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Articles 312 Documents
UJI KELAYAKAN TANAH PADA PERENCANAAN SEPTIC TANK KOMUNAL DI LAHAN BERKONTUR PERMUKIMAN BANTARAN SUNGAI KOTA YOGYAKARTA Hestin Mulyandari; Adwiyah Asyifa
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 15, No 2 (2019): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.88 KB) | DOI: 10.21831/inersia.v15i2.28568

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ABSTRACTCode riverbanks are dominated by land for settlements, one of the points being the proposed establishment of rusunami, in Jetisharjo, city of Yogyakarta. Riverbanks at the location are slippery, so have many problems of structure and infrastructure. In the planning of rusunami, it is necessary to consider the location of the communal septic tank. The research use method of quantitative research. The results of soil testing are soil moisture content of 7.788%, density of 2.688, soil shear strength (Ʈ) of 0.870 kg/cm2, internal friction angle of 440, and sandy soil. The results of the shear strength testing of the land that the selected location contain subgrade, so that if it will be used as a communal septictank, it needs to be made a strong enough foundation to avoid degradation and slope failure, the construction of communal septic tanks must be made strong so that they can avoid lift by water pressure.Keywords: soil test, communal septic tank, contoured land ABSTRAKBantaran Sungai Code  didominasi lahannya untuk permukiman, salah satu titiknya menjadi usulan berdirinya rusunami, di RW 07 Kecamatan Jetisharjo, Kota Yogyakarta. Bantaran Sungai di lokasi tersebut sangat curam, sehingga dari segi struktur dan infrastruktur banyak mengalami kendala. Pada perencanaan rusunami nantinya perlu diperhitungkan titik-titik yang menjadi lokasi septic tank komunalnya. Metode penelitian yang digunakan adalah penelitian kuantitatif. Hasil pengujian tanah sebagai berikut: kadar air tanah sebesar 7, 788%, berat jenis sebesar 2,688, kuat geser tanah (Ʈ) sebesar 0,870 kg/cm2, sudut gesek internalnya  440, dan berjenis tanah pasir. Dari hasil uji gesernya kekuatan tanahnya bahwa lokasi terpilih merupakan bekas tanah urug, sehingga apabila akan dijadikan septictank komunal perlu dibuatkan fondasi yang cukup kuat untuk menghindari  penurunan dan kelongsoran tebing, maka konstruksi septic tank komunal harus dibuat kokoh sehingga dapat terhindar dari up lift oleh tekanan air.Disarankan menggunakan septic tank moderen (fabricated).Kata kunci: uji tanah, septic tank komunal, lahan berkontur
ARAHAN PENATAAN KAMPUNG TRADISIONAL WISATA BATIK KAUMAN SURAKARTA Desrina Ratriningsih
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 13, No 2 (2017): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3770.162 KB) | DOI: 10.21831/inersia.v13i2.17175

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ABSTRACT Kampung Wisata Batik Kauman Surakarta is a village that grows among the villages in Java. The term Pakauman given by Keraton means the dwellings of 'kaum' or ulama. KampungWisata Batik Kauman is a traditional village that holds cultural heritage both physical and non physical. Cultural potential and local wisdom for the field of cultural tourism is still high, even able to become a trend of tourism potential in the future.Until now, the development of tourism village in Kampung Batik Kauman Surakarta is still partial, the tendency seen during the existence of the tourist village that has the potential of local wisdom and culture has not been handled and managed optimally. This is evident from the tourist village that almost lost its original character. Therefore it needs to be initiated the pattern of tourism development that makes the culture as a tourist attraction in Kampung Batik Kauman. The development of this tourist village is in line with the Solo city's mission of Solo's Past is Solo's future as a cultural and tourism city characterized by Javanese accentuation and preserving cultural assets, both tangible and intangible.The concept of arrangement of KampungWisata Batik Kauman area to turn the area (visitable) and must be able to serve the user and comfortable to visit (livable and walkable). The direction of arrangement of KampungWisata Batik Kauman is done through the strengthening of tourist attractions and the arrangement of supporting facilities of tourist attractions. The direction of this arrangement should be able to take advantage of cultural heritage as a tourist attraction while protecting cultural heritage. Proper regional planning will be a tourist attraction and improve the quality of life of local communities and the cultural qualities of the region. Keywords: Kampung Wisata, Culture and Religion, Visitable ABSTRAK Kampung Wisata Batik Kauman Surakarta merupakan sebuah kampung yang tumbuh diantara kampung-kampung di Jawa. Istilah Pakauman diberikan oleh Keraton mempunyai arti tempat tinggal para ‘kaum’ atau ulama.Kampung Wisata Batik Kauman merupakan kampung tradisional  yang menyimpan warisan budaya baik fisik maupun non fisik. Potensi budaya dan kearifan lokal untuk bidang pariwisata budaya masih tinggi, bahkan mampu menjadi kecenderungan potensi wisata di masa depan.Sampai saat ini pengembangan kampung wisata di Kampung Batik Kauman Surakarta masih bersifat parsial, kecenderungan yang terlihat selama ini eksistensi kampung wisata yang memiliki potensi kearifan lokal dan budaya belum ditangani dan dikelola secara optimal. Hal ini terlihat dari kampung wisata yang hampir kehilangan karakter aslinya. Oleh karena itu perlu digagas pola pengembangan wisata yang menjadikan budaya sebagai daya tarik wisata di Kampung Batik Kauman. Pengembangan kampung wisata ini sejalan dengan misi kota Surakarta “Solo’s Past is Solo’s future” sebagai kota budaya dan pariwisata yang berkarakter dengan aksentuasi Jawa dan melestarikan aset-aset budaya, baik yang tangible maupun intangible. Konsep penataan kawasan Kampung Wisata Batik Kauman untuk menghidupkan kawasan (visitable) serta harus mampu melayani pengguna dan nyaman untuk dikunjungi (livable dan walkable).  Arahan penataan Kampung Wisata Batik Kauman dilakukan melalui perkuatan atraksi wisata dan penataan sarana pendukung atraksi wisata. Arahan penataan ini harus mampu memanfaatkan warisan budaya sebagai daya tarik wisata sekaligus melakukan perlindungan terhadap warisan budaya. Perencanaan kawasan yang tepat akan menjadi daya tarik wisata dan meningkatkan kualitas hidup masyarakat lokal dan kualitas budaya di kawasan tersebut. Kata kunci : Kampung Wisata, Budaya dan Religi, Visitable
MODEL ANALISIS HARGA SATUAN KOMPONEN PEKERJAAN DI PROVINSI D.I.YOGYAKARTA BERDASARKAN PADA DATA HISTORIS PENAWARAN KONTRAKTOR Vanita Kesumawati Yacub; Henricus Priyosulistyo; Arief Setiawan Budi Nugroho
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 14, No 2 (2018): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (887.359 KB) | DOI: 10.21831/inersia.v14i2.22535

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UJI TITIK NYALA DAN TITIK BAKAR SEMARBUT ASPAL TIPE 4 BERDASARKAN SNI 2433:2011 Galeh Nur Indriatno Putra Pratama; Arif Muhammad Yusuf
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 15, No 1 (2019): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (923.112 KB) | DOI: 10.21831/inersia.v15i1.24864

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ABSTRACTAsphalt is a filtering material of crude oil used as a pavement material. Asphalt quality becomes a very important and must be considered for pavement material, especially in its nature that can be burning and burning. Flash point and asphalt burn point is very important to know as planning of pavement material so that at certain condition of asphalt does not burn. This test aims to determine the point of flame and asphalt burn point. The asphalt samples were taken from asphalt inventory in the laboratory of pavement material of Department of Civil Engineering Education and Planning of FT UNY. The method used is to compare the result of flash point test and burn the emulsion asbuton extract using a modified solar refinery with penetration asphalt 60/70 (asphalt semarbut type 4) with flame point test and asphalt burn 60/70 regular penetration without modification with cleveland cup with regulation of SNI 2433: 2011. Data processing and graphics program used MS Exel 2010 application. Based on the test results concluded that the testing point and point of burning asphalt has been done obtained average flame point value at 250 ° C in an average time of 1.193 minutes, while the value of fuel point occurs when the asphalt temperature is 280 ° C in an average time of 3.48 minutes.Keywords: asphalt, flash point, fuel point ABSTRAK Aspal merupakan material hasil penyaringan minyak mentah yang digunakan sebagai bahan perkerasan jalan. Kualitas aspal menjadi suatu yang sangat penting dan harus diperhatikan untuk bahan perkerasan, terutama dalam sifatnya yang bisa menyala dan terbakar. Titik nyala dan titik bakar aspal sangat penting diketahui sebagai perencanaan bahan perkerasan jalan agar pada saat kondisi tertentu aspal tidak terbakar. Pengujian ini bertujuan untuk mengetahui titik nyala dan titik bakar aspal. Sampel aspal diambil dari aspal persediaan di laboratorium bahan perkerasan jalan Jurusan Pendidikan Teknik Sipil dan Perencanaan FT UNY. Metode yang digunakan adalah membandingkan hasil pengujian titik nyala dan bakar ekstrak asbuton emulsi menggunakan peremaja solar yang dimodifikasi dengan aspal penetrasi 60/70 (semarbut aspal tipe 4) dengan pengujian titik nyala dan bakar aspal penetrasi 60/70 biasa tanpa modifikasi dengan alat cleveland cup sesuai dengan peraturan SNI 2433:2011. Pengolahan data dan grafik digunakan program aplikasi MS Exel 2010. Berdasar hasil pengujian disimpulkan bahwa pada pengujian titik nyala dan titik bakar aspal yang telah dilakukan diperoleh rata-rata nilai titik nyala  pada suhu 250°C dalam waktu rata rata 1,193 menit, sedangkan nilai titik bakar terjadi ketika suhu aspal 280°C dalam waktu rata rata 3,48 menit.  Kata kunci: aspal, titik nyala, titik bakar
ANALISIS KINERJA SIMPANG BERSINYAL (STUDI KASUS JALAN HASANUDDIN-JALAN KAMBOJA, SUMBAWA BESAR) Suryaningsih, Oyi Febri; Hermansyah, Hermansyah; Kurniati, Eti
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol 16, No 1 (2020): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (520.919 KB) | DOI: 10.21831/inersia.v16i1.31317

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ABSTRAKMeningkatnya jumlah penduduk di Kabupaten Sumbawa menyebabkan meningkatnya juga pertumbuhan kendaraan pribadi. Pertumbuhan kendaraan pribadi yang tinggi bisa menyebabkan kemacetan salah satunya di Simpang Jalan Hasanuddin-Jalan Kamboja yang sering terjadi tundaan kendaraan pada jam sibuk. Kawasan ini termasuk dalam kawasan yang padat karena merupakan kawasan pusat perdagangan, perkantoran, dan pendidikan. Tujuan penelitian ini adalah untuk menganalisis kinerja tingkat pelayanan persimpangan Jalan Hasanuddin-Jalan Kamboja melalui evaluasi kinerja simpang bersinyal berdasarkan analisis waktu sinyal, kapasitas, derajat kejenuhan dan tingkat pelayanan simpang dengan menggunakan metode MKJI 1997. Berdasarkan hasil analisis yang dilakukan diperoleh tingkat pelayanan simpang berada pada level C (arus stabil tetapi kecepatan dibatasi) yaitu Derajat Kejenuhan untuk Pendekat Barat, Selatan dan Timur sebesar 0,53, 0,55 dan 0,56. Hal ini menandakan bahwa simpang bersinyal tersebut masih cukup baik karena Derajat Kejenuhan masih berada dibawah angka 0,75. Kata Kunci: derajat kejenuhan, MKJI 1997, simpang bersinyal, tingkat pelayanan simpang  ABSTRACTThe increasing number of population in Sumbawa Regency also increases the growth of private vehicles. High growth of private vehicles can cause traffic jams, one of which is at the Hasanuddin-Cambodia Road Junction which often causes vehicle delays during rush hour. This area is included in a dense area because it is a center of trade, offices, and education. The purpose of this study is to analyze the performance level of the intersection of Hasanuddin Road and Jalan Cambodia through the evaluation of the performance of signal intersections based on the analysis of signal time, capacity, degree of saturation and level of intersection services using the MKJI 1997 method. at level C (current is stable but speed is limited), namely the Degree of Saturation for the West, South and East Approaches of 0.53, 0.55 and 0.56. This indicates that the signaled intersection is still quite good because the degree of saturation is still below the 0.75 figure. Keyword: degree of saturation, MKJI 1997, signed intersection, road services level
STABILITAS MARSHALL DAN KETAHANAN DEFORMASI WARM MIX ASPHALT MENGGUNAKAN ADITIF ZYCOTHERM I Gusti Ngurah Widyantara; Latif Budi Suparma; Imam Muthohar
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 14, No 1 (2018): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (573.009 KB) | DOI: 10.21831/inersia.v14i1.19494

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ABSTRACTWarm Mix Asphalt (WMA) is produced at mixing temperatures between 20°C-40°C lower than Hot Mix Asphalt (HMA). Zycotherm added ingredients is one of the additives used in Warm Mix Asphalt. This study aims to assess Marshall stability and resistance to deformation by using asphalt type AC 60/70 ex Shell and Zycotherm additives on warm asphalt mixtures. In this study, the test was carried out on a layer of (AC-WC) to four mixed variations ie HMA-0, WMA-1, WMA-2, WMA-3 with 0% Zycotherm content; 0.10%; 0.15% and 0.20%. Mixed performance is measured by Marshall and Wheel Tracking Machine (WTM) testing. Based on the result of Gyropac test, with Workability Index (WI) value approach, the mixing temperature and compaction of WMA-1, WMA-2 and WMA-3 mixture are respectively obtained temperature 130/120°C, 130/120°C and 140/130° C. The Marshall test, the stability value of all mixtures fulfilled the minimum specification requirement of 800 kg, with the greatest stability value obtained from WMA-1 mixture of 1325 kg with additive content of 0.10%. The results of the Wheel Tracking Machine (WTM) test, a mixture that has resistance to deformation is a mixture of WMA-1 has the smallest deformation value of 1.93 mm, the largest dynamic stability of 1400 traje / mm and the smallest deformation velocity of 0.030 mm / min. That the use of Zycotherm is suitable for use in AC-WC warm mixture, with the optimum value of Zycotherm 0,10%. The use of excessive Zycotherm content results in a poor AC-WC warm mixture performance.Keywords: Dynamic Stability, Marshall, Warm Mix, Wheel Tracking Machine, Zycotherm. ABSTRAKWarm Mix Asphalt (WMA) diproduksi pada suhu pencampuran antara 20°C-40°C lebih rendah daripada Hot Mix Asphalt (HMA). Bahan tambah Zycotherm merupakan salah satu aditif yang digunakan dalam Warm Mix Asphalt. Kajian ini bertujuan untuk mengkaji stabilitas Marshall dan ketahanan terhadap deformasi dengan menggunakan bahan perekat aspal jenis AC 60/70 ex Shell dan aditif Zycotherm pada campuran aspal hangat. Pada kajian ini, pengujian dilakukan pada lapis aus (AC-WC) terhadap empat variasi campuran yaitu HMA-0, WMA-1, WMA-2, WMA-3 dengan kadar Zycotherm 0%; 0,10%; 0,15% dan 0,20%. Kinerja campuran diukur berdasarkan pengujian Marshall dan Wheel Tracking Machine (WTM). Berdasarkan hasil pengujian Gyropac, dengan pendekatan nilai Workability Index (WI) diperoleh suhu pencampuran dan pemadatan campuran WMA-1, WMA-2 dan WMA-3 secara berurutan diperoleh suhu 130/120°C, 130/120°C dan 140/130°C. Pengujian Marshall diperoleh nilai stabilitas semua campuran memenuhi ketentuan spesifikasi yaitu minimum 800 kg, dengan nilai stabilitas terbesar diperoleh dari campuran WMA-1 sebesar 1325 kg dengan kadar aditif 0,10%. Hasil pengujian Wheel Tracking Machine (WTM), campuran yang memiliki ketahanan terhadap deformasi adalah campuran WMA-1 memiliki nilai deformasi yang paling kecil sebesar 1,93 mm, stabilitas dinamis terbesar sebesar 1400 lintasan/mm dan kecepatan deformasi terkecil sebesar 0,030 mm/menit. Bahwa penggunaan Zycotherm cocok digunakan pada campuran hangat AC-WC, dengan nilai optimum penggunaan Zycotherm sebanyak 0,10%. Penggunaan kadar Zycotherm yang berlebihan menghasilkan performa campuran hangat AC-WC yang kurang baik.Kata kunci: Stabilitas Dinamis, Marshall, Warm Mix, Whell Tracking Machine,  Zycotherm.
ANALISIS PERILAKU PEJALAN KAKI PADA PENGGUNAAN FASILITAS PENYEBERANGAN DI SEPANJANG JALAN KAWASAN MALIOBORO YOGYAKARTA Lilis Trianingsih, Retna Hidayah
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 10, No 2 (2014): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.507 KB) | DOI: 10.21831/inersia.v10i2.9959

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ABSTRACTThis study aims to provide information on the behavior of pedestrians using the crossingfacilities along the Malioboro in Yogyakarta and to describe the perception of pedestrians on thecrossing condition of the facilities available. This study used survey method. the type ofresearch design used in this research is descriptive qualitative research is to depict or describethe naturally occurring condition. While data collection is done through a literature study,observation, and interviews. The population of this research is all pedestrian with the number ofrespondents as many as 20 people and sample collection techniques are Snowball Sampling.There are three aspects of the indicator analysis study, namely: security and safety, comfort,and ease of access. The results of this study are descriptions of the various behaviors ofpedestrians in using the facilities crossings in terms of security and safety aspects, comfort, andease of access as well as describe the condition of the facilities crossings available, so it can beused as an input policy development and design facilities crossings better.Keywords: Crossing Facilities, Security and Safety, Walking Behavior
KAJIAN ESTETIKA BENTUK PADA FASADE PERUMAHAN REAL ESTATE DI YOGYAKARTA Suparno Sastra M
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 12, No 1 (2016): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.789 KB) | DOI: 10.21831/inersia.v12i1.10355

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Technology in construction and building materials was instrumental in the development of the design andperiodization of architectural style. Particularly in housing, development in the physical infrastructure of housingsuch as real estate building in various housing complexes in Yogyakarta already generated diversity in facadedesign and various types of the arrangement of architectural elements that are very phenomenal. Therefore, thisstudy is so important and necessary to conduct in order to (a) find out the principles of the arrangement ofarchitectural elements in real estate building facade, and (b) describe the identification of the architecturalelements forming a configuration of real estate building façade. The study used an explorative method forexploration on field and made a qualitative analysis to find the facts. Areas of the study include the four residentialreal estate locations in Sleman Regency, Yogyakarta province. The study was conducted in the housings ofGejayan Puri Indah, Casa Grande, Bale Hinggil Residence, and Hyarta Residence. The samples were standardtypebuildings, because it is expected to maximally represent diversity in housing design in the residentiallocations. The unit of analysis was building facades on four residential locations. Parameters of the architecturalelements of the facade were roof, walls, columns, openings, main entrance, terrace and balcony, andornamentation. The arrangement of residential building facade elements was studied on the bases of symmetry,articulation, visual proportion, and horizontal-vertical direction. The results of the study were: first, the symmetry ofa residential building facade shows an asymmetric tendency because of aesthetic considerations and theprinciples of construction as well as the intention to maximize a selling point. Second, all the building facades inthe four residential locations have the strong articulation with focus on main entrance, terrace and balcony, railing,balcony and roof ornamentation as the main elements forming the facade articulation. Third, the visual proportionof facade was found to have more balanced tendency between roof and building body. Fourth, the facades ofresidential buildings have mostly had balanced horizontal-vertical directions because the height of building wasalmost equal to the width of the building and the arrangement of horizontal-vertical architectural elements formingthe facade was averagely composed in a balanced manner.
METODE PENGOLAHAN AIR LIMBAH ALTERNATIF UNTUK NEGARA BERKEMBANG Satoto E. Nayono
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 6, No 1 (2010): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (284.253 KB) | DOI: 10.21831/inersia.v6i1.10574

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Domestic or industrial wastewater management and treatment in many developing countries tend to imitate the systems and technology from industrialized countries by adopting a centralized wastewater processing system and treatment technologies such as activated sludge or tertiary nutrients removal. However, the effort to replicate these methods, in fact, is not an appropriate solution to overcome the problems of sanitation in developing countries, particularly Indonesia. These sophisticated technologies require a large energy supply, skilled operators as well as substantial operating costs.Furthermore, these methods do not provide any opportunity to recover energy and valuable nutrients contained in wastewater. These reasons can cause wastewater management become unsustainable. This paper will present some alternatives and concepts in the management and treatment of wastewater. It will be limited to several natural wastewater treatment alternatives to support sustainable management of water resources in terms of both technology and financing. Some low-cost appropriate technologies for wastewater treatment will also be discussed include: anaerobic treatment, wastewater treatment by waste stabilization ponds, wastewater treatment by macrophytes ponds and wastewater treatment by constructed wetlands.Keywords: wastewater, natural wastewater treatment, anaerobic treatment, waste stabilization ponds, macrophytes ponds, constructed wetlands
PENGELOLAAN SISTEM DRAINASE KAMPUS UNYKARANGMALANG MENUJU KEMANDIRIANSUMBER AIR BERSIH Didik Purwantoro Sumardjo H, Rifta AP, Dwi Yulianto
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 8, No 1 (2012): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (340.696 KB) | DOI: 10.21831/inersia.v8i1.3699

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This research was meant to find out Capability of a system campusdrainage area at Universitas Negeri Yogyakarta, Karangmalang. Karangmalangbecomes very strategic because of An influence on the flooding during the rainSubsidence groundwater as a source of clean water in the summer. The colomboarea that is part of the campus Universitas Negeri Yogyakarta (the gate of UNY), aslong as it has been known as a flood-prone area. This research was conducted withsurvey approaches in the field for 4 months. The fist step, evaluation dischargeoccurring due to rain in kawasan UNY campus. The second evaluation of drainagechannels in the drain the ability of surface water with the rational method. The testresult showed that the drainage system Was not able to fulfill a discharge of waterthat occurs with 55,77mm/jam or Rain reëxamined high by period of 10 years. Butwhen most of the rain water (from roof) Distributed into infiltration well, therefore theneed of infiltration well as 388 pieces????Keyword: drainage, Universitas Negeri Yogyakarta