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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni
Endaryanta Endaryanta
FBS UNY
Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT

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Electrical Resistivity Tomography as a Geotechnical Justification Support (Case Study Makassar – Pare-Pare Railway Bed Construction KM 68+450 to KM 68+750) Sasmayaputra, Nur Alfian; Wibowo, Dian Eksana; Fajarwati, Yuli; Endaryanta, Endaryanta; Aswad, Sabrianto; Widiastuti, Nur Oktaviani
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.77380

Abstract

This study examined the presence of underground water channels under the Makassar - Pare-pare railway line KM 68+450 – KM 68+750 and the design concept for the technical solution. The potential for underground water channels was identified during construction, based on community information, the location's morphological phenomena, and  geological conditions whose base rock was the limestone formation. The problems can cause instability of the railway line, resulting in unsafe train travel. One of the characteristics of limestone rock conditions is its hollow shape, like a cave that can become underground water flow. It was a case study whose solution was based on data obtained from geotechnical investigations. Boring testing can only provide information on soil layers at the test point and cannot describe soil stratigraphy section, including underground water channel.  Combination  ERT and Boring tests were carried out to examine the presence of underground water channels. This study was conducted in three stages: initial identification, advanced identification, and design concept of Technical Solution. In these three stages, data collection and analysis were carried out. The results of the study indicated that ERT tests could provide a picture of the subsurface to shallow bedrock, thus facilitating the justification of geotechnical design. From the analysis, it was concluded that no channel cavities, such as caves, that function as underground water channels. The existing water flow was estimated to be a confining aquifer where water flows due to the height difference in the surrounding morphological conditions through the media of the broken limestone water shaft. It was confirmed with the results of Boring and ERT tests. The proposed technical solution concept was strengthening the Dolken embankment structure and geogrid, combined with a subdrain layer. The technical solution was prepared based on the results of research on construction contract data and project resource readiness.
RANCANG BANGUN MESIN PENGOLAH LIMBAH PERTANIAN UNTUK PRODUKSI PAKAN TERNAK AWETAN DI DAERAH KERING Endaryanta, Endaryanta; Marsudi, Ilham; Sumardjito, Sumardjito; Purwoko, Bambang Setyo Hari
INOTEKS: Jurnal Inovasi Ilmu Pengetahuan,Teknologi, dan Seni Vol 15, No 1 (2011)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ino.v15i1.2298

Abstract

Sukorejo village, Musuk, area at Boyolali is dry farm field, whereas this field is a breeder center of milking-cow and flesh-cows. They give food to cattle by traditional method, that is the grass is cut by knife and then give directly to the animals. In wet season, this method is no problem, but in dry season this method makes a problem because there are not easy to get much grass  for  cattle.  Consentrate  mill  and  rice  siftings  are  become  food substitution from its food although with high price. It is really, whereas agricultural rubbish (e.g.: stick of tuberous plant, stick of papaw, “lamtoro” stick, etc.) are in stock very much. Truly, this agricultural rubbish can be changed (by choping) become weft cattle. To solving this problem, team PPM FT UNY give a solution by making a manufactured agricultural rubbish machine and application of a silase  complete  weft  cattle  preserve  technology for  farmer  and  breeder group.   The PPM used several methods : presentation, trained, practiced, and made manufactured agricultural rubbish machine. The topic of training is complete weft cattle preserve technology (fermentation method), machine operation, safe and true maintenance of machine. The results of this PPM speciality programm  are : (1) farmer and breeder get 1 unit manufactured agricultural rubbish machine; (2) farmer and  breeder  get   a  skill  about   silase  complete  weft   cattle  preserve technology; and (3) they have could change agricultural rubbish become weft cattle, so it can increase of their grade prosperity
Co-Authors Bambang Setyo Hari Purwoko Dian Eksana Wibowo Ilham Marsudi Nur Oktaviani Widiastuti, Nur Oktaviani Sabrianto Aswad, Sabrianto Sasmayaputra, Nur Alfian Sumardjito Sumardjito Yuli Fajarwati