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All Journal International Journal of Evaluation and Research in Education (IJERE) Rancang Bangun INTEK: Jurnal Penelitian
Indra Mutiara, Indra
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Engineering Transportation

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Perbandingan Laju Sedimentasi pada Embung Beroangin dengan Metode USLE dan Pengukuran Langsung Djufri, Hasdaryatmin; Mutiara, Indra
Jurnal Teknik Sipil : Rancang Bangun Vol 4, No 2 (2018): Oktober
Publisher : Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (856.231 KB) | DOI: 10.33506/rb.v4i2.170

Abstract

Salah satu upaya dalam rangka pemenuhan kebutuhan air di Kabupaten Jeneponto Provinsi Sulawesi Selatan yang rentan terhadap kekeringan adalah dengan membangun Embung Beroangin pada tahun 2015 dengan kapasitas tampungan mati awal sebesar 1.307,49 m3, penurunan kapasitas tampungan mati embung dipengaruhi oleh erosi pada DAS yang selanjutnya terdeposit menjadi sedimen pada area tampungan embung. Penelitian ini dilakukan untuk memprediksi laju sedimentasi yang terjadi pada Embung Beroangin dengan metode analisis USLE menggunakan hasil analisa data sekunder meluputi: Luas DAS, curah hujan, jenis tanah, kelerengan dan penggunaan lahan. Analisa sedimentasi juga dilakukan melalui pengukuran langsung menggunakan echosounder dengan memetakan dan menghitung volume tampungan mati saat ini yang selanjutnya dibandingkan volume tampungan mati awal.  Laju sedimentasi yang diperoleh dengan metode USLE adalah sebesar 492.34 m3/tahun, sedangkan metode pengukuran langsung sebesar 435.38 m3/tahun
Lesson learned from vocational training center as a school-to-work transition program in Indonesia Hamid, Mustofa Abi; Siswantoyo, Siswantoyo; Gunadi, Gunadi; Setiawan, Dedi; Mutiara, Indra; Martias, Martias; Ismail, Affero
International Journal of Evaluation and Research in Education (IJERE) Vol 14, No 2: April 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v14i2.31142

Abstract

The objective of this study is to assess the effectiveness of the refrigeration technology training program at the vocational training centers (VTCs) by employing the context, input, process, product, and outcome evaluation approach. This study is classified as evaluative research, employing a qualitative description approach. Data collecting employs several approaches such as observation, interviews, and documentation. The primary informants in this study included the head of the VTC, the organizer of the VTC, the instructor of the refrigeration technology training, and the participants of the refrigeration technology training. Triangulation methods are employed to guarantee the accuracy and reliability of the data. The findings indicate that the setting, process, and product elements can be categorized as satisfactory, while the input and outcome aspects remain in the poor category. To increase employment and reduce unemployment, this split air conditioning training can be expanded by strengthening program components in the input aspect, particularly facilities, and infrastructure, as well as in the output aspect.
Tinjauan Elevasi Puncak Bangunan Seawall di Pantai Galesong Utara Mutiara, Indra
INTEK: Jurnal Penelitian Vol 5 No 2 (2018): Oktober 2018
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (965.242 KB) | DOI: 10.31963/intek.v5i2.579

Abstract

This study aims to review the use of vertical datumand determine the elevation of seawall constructions based on thesea level design. The sea level design used as a vertical referenceis MSL and LWS. The elevation of the seawall construction fromthe two references above then compared to the elevation of theseawall construction listed in the as built drawing documentduring construction. The MSL value is obtained from the tidalanalysis by using Doodson method based on direct observationfor 39 hours, while the LWS value is obtained by taking intoaccount the position of the range of tide at Tide Station inMakassar. Seawall elevation is obtained by terrestrialmeasurements using the Total Station by measuring the height ofthe top position of the seawall construction against the sea leveldesign through the Bench Mark. The seawall top elevation datacollection is done every one meter along 274 meters. The resultsobtained from measuring seawall construction elevation are +2,251 meters if using reference to MSL and +2,911 meters if usinga reference to LWS, while the elevation in the as built drawingdocument is +4,000 meters unknown what vertical reference isused as a reference.
Bearing Capacity Analysis of Spun Pile Foundation in Gas Engine for Electrical Power Plant Project of Selayar Mutiara, Indra
INTEK: Jurnal Penelitian Vol 7 No 2 (2020): October 2020
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v7i2.2643

Abstract

Gas Engine for Electrical Power Plant Project of Selayar is a power plant which will be built in Selayar Regency. This plant uses gas and biodiesel as a fuel. The facilities needed in the power plant construction includes a Gas Engine, Service Water Tank and Biosolar Tank. This study aims to obtain the allowable bearing capacity of the prestressed spun pile foundation for the three buildings based on soil investigation data of SPT (Standard Penetration Test) at BH-1 (gas engine), BH-2 (service water tank) and BH-3 (biosolar tank). The Meyerhof formula is used for the calculation of ultimate bearing capacity analysis on prestressed spun piles with various diameters for each depth. Calculation of the allowable bearing capacity (Qa) of the foundation at a depth of 19 meters, using a spun pile with a diameter of 300 cm, obtained a Qa value of 94.17 tons at BH-1, 94.20 tons at BH-2, and 74.65 tons at BH-3. Using a spun pile with a diameter of 400 cm, the Qa values were 116.71 tons on BH-1, 117.64 tons on BH-2, and 91.92 tons on BH-3. Using a spun pile with a diameter of 500 cm, the Qa values were 168.67 tons on BH-1, 172.09 tons on BH-2, and 131.49 tons on BH-3. Meanwhile, the values of Qa obtained were 229.85 tons on BH-1, 236.66 tons on BH-2, and 177.79 tons on BH-3 with the use of a spun pile with a diameter of 600 cm.
Analysis of Bored Pile Foundation Bearing Capacity Based on Cone Penetration Test Data (Case Study: Cilellang Weir Location) Mutiara, Indra
INTEK: Jurnal Penelitian Vol 8 No 1 (2021): April 2021
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v8i1.2772

Abstract

The use of a bored pile foundation is an alternative in planning deep foundations. The function of this bored pile foundation is more or less the same as other deep foundations such as piles but has a slight difference in the process. The bored pile foundation begins with drilling the ground to the planned depth, followed by the installation of steel reinforcement and then concrete mortar. This study aims to evaluate the Cone Penetration Test (CPT) data on the bearing capacity of the bored pile foundation. Calculation of bearing capacity from Cone Penetration Test (CPT) data using the Schmertmann & Nottingham method and the Mayerhof method. Based on CPT data, the percentage calculation of ultimate bearing capacity at location S1 with the Schmertmann & Nottingham method is more optimistic ±17.28% compared to using the Mayerhof method for bored pile diameters of 60 and 80 cm, while for bored pile diameters of 40 cm, calculations using the Mayerhof method show more optimistic by 21.89%. The percentage calculation of ultimate bearing capacity at location S2 using the Schmertmann & Nottingham method is ±11.66% more optimistic than using the Mayerhof method for bored pile diameters of 60 and 80 cm, while the diameter of the bored pile 40 cm, the calculation using the Mayerhof method shows a more optimistic result of 33.82%.
Co-Authors Affero Ismail, Affero Dedi Setiawan Djufri, Hasdaryatmin Gunadi Gunadi Martias Martias Mustofa Abi Hamid Siswantoyo