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Partogi H. Simatupang, Partogi H.
Dosen pada Jurusan Teknik Sipil, FST Undana
Civil Engineering, Building, Construction & Architecture Engineering

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On the Development of a Nomogram for Alkali Activated Fly Ash Material (AAFAM) Mixtures Simatupang, Partogi H.; Imran, Iswandi; Pane, Ivindra; Sunendar, Bambang
Journal of Engineering and Technological Sciences Vol 47, No 3 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (821.159 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.3.1

Abstract

Alkali activated fly ash material (AAFAM) has become the most promising material to substitute materials based on ordinary Portland cement (OPC). However, there is no available nomogram for AAFAM mixtures. In contrast, there are many rational methods available in the literature to make paste, mortar and concrete with OPC based materials, such as Monteiro-Helene’s nomogram, which uses Abram’s law, Lyse’s law and Molinari’s law. This paper presents a study to construct such a nomogram for AAFAM mixtures by first conducting experiments on the  paste and mortar phases. The procedure of Monteiro-Helene’s nomogram was adopted in this formulation. The first step in this direction was to find a close relationship between the strength and paste composition of the material that can be used as a substitute for Abram’s law. The second step  was  to construct the equivalent  of  Lyse’s and Molinari’s relationships by varying the sand and fly ash contents. The results show that it is possible to make a nomogram for AAFAM mixtures such as the one for OPC based materials. Class F fly ash and its mortar phase were used to construct the nomogram. In addition, the  mortar  samples  that were  used to build the nomogram had similar solidification products according to their microscopic characteristics.
PENGARUH VARIASI PERHITUNGAN TEGANGAN DAN REGANGAN KOLOM BETON BERTULANG TERHADAP DAKTILITAS PENAMPANG TAKTERKEKANG Simatupang, Partogi H.; Siallagan, Gisella D.; Pah, Jusuf J. S.
Jurnal Teknik Sipil Vol 7, No 1 (2018): Jurnal Teknik Sipil
Publisher : Jurnal Teknik Sipil

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Abstract

Salah satu parameter penting dalam  perencanaan suatu kolom adalah daktilitas.  Nilai daktilitas suatu kolom dapat ditentukan dari kurva hubungan antara momen dan kurvatur. Nilai momen dan kurvatur didapat dari perhitungan tegangan dan regangan beton.Tujuan penelitian ini adalah untuk mengetahui pengaruh variasi tegangan dan regangan kolom beton bertulang terhadap daktilitas penampang tak terkekang. Dalam analisis ini hubungan tegangan dan regangan menggunakan 4 metode yaitu Kent and Park, Popovics, Thorenfeldt dan Hognestad yang kemudian dilakukan analisis momen dan kurvatur secara manual dari hubungan tegangan dan regangan. Selain menghitung secara manual juga digunakan program bantuResponse 2000. Output Response 2000 digunakan sebagai pembanding dengan cara perhitungan manual. Hasil analisis secara manual maupun menggunakan Response 2000 menunjukkan luas tulangan longitudinal dan mutu tulangan longitudinalyang meningkat dapat menurunkan nilai daktilitas kolom sedangkan mutu beton yang meningkat maka daktilitas juga meningkat. Selain itu, konfigurasi tulangan longitudinal juga dapat mempengaruhi nilai daktilitas suatu kolom dengan nilai daktilitas paling kecil terdapat pada sampel UC3-01.One of the important parameter in a column planning is ductility. Ductility of a column can determined from relation curve between moment and curvature.Moment and curvature value is obtained from the calculation of concrete stress and strain.This research aims is to know the effect of stress and strain variation of reinforced concrete column on unconfined section ductility.In this research, stress and strain relation use 4 methods such as Kent and Park, Popovics, Thorenfeldt and Hognestad and then moment-curvature analysis is done manually by Ms.Excel 2013 from stress-strain relation. Besides counting manually also used the Response 2000 program. Output of Response 2000 is used as a comparison by manual calculation. The results of manual analysis or using Response 2000 indicates that an increase in the area of longitudinal reinforcement and the steel yield strength can decreases the ductility while an increase in the concrete strength increases the ductility. In addition, the configuration of longitudinal reinforcement also affects the ductility of a column with the smallest ductility value in the UC3-01.
PERBANDINGAN KUAT TEKAN BATA RINGAN CLC MENGGUNAKAN PASIR GUNUNG BOLENG DAN PASIR TAKARI Eban, Kornelis K.; Utomo, Sudiyo; Simatupang, Partogi H.
Jurnal Teknik Sipil Vol 7, No 2 (2018): Jurnal Teknik Sipil
Publisher : Jurnal Teknik Sipil

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Abstract

Penelitian ini bertujuan untuk mengetahui karakteristik bata ringan yang menggunakan pasir Gunung Boleng sebagai bahan campuran bata ringan Cellular Lighweight Concrete (CLC) terhadap berat volume, kuat tekan, dan serapan air. Metode yang digunakan dalam penelitian ini yaitu pengujian laboratorium yakni dengan membuat bata ringan CLC yang menggunakan pasir Takari sebagai pembanding. Bata ringan CLC yang telah dicuring selama 7, 14, 21, dan 28 hari diuji untuk mendapatkan nilai berat volume, kuat tekan, dan serapan air. Hasil pengujian bata ringan CLC yang menggunakan pasir Takari memiliki nilai berat volume rata-rata selama masa perawatan berturut-turut 0,733 gr/cm3, 0,726 gr/cm3, 0,708 gr/cm3,dan 0,683 gr/cm3lebih besar dari bata ringan CLC yang menggunakan pasir Gunung yaitu 0,643 gr/cm3, 0,625 gr/cm3, 0,611 gr/cm3,dan 0,564 gr/cm3. Nilai kuat tekan bata ringan CLC yang menggunakan pasir Takari selama masa perawatan berturut – turut yakni 0,808 MPa, 0,892 MPa, 0,931 MPa, 0,975 MPa lebih besar dari kuat tekan bata ringan CLC yang menggunakan pasir Gunung Boleng turut yakni 0,592 MPa, 0,642 MPa, 0,708 MPa, 0,814 MPa. Nilai serapan air pada bata ringan CLC yang menggunakan pasir Takari lebih kecil yakni 18,161 % dibandingkan dengan nilai serapan air pada bata ringan CLC yang menggunakan Gunung Boleng yakni 21,747 %.The purpose of this study is to find out the characteristics of light bricks in using the Mount Boleng sand as a lightweight material of lightweight Concrete Lightweight Concrete (CLC) for weight volume, compressive strength and water absorption. The method that is used in this research is laboratory testing that is to make CLC lightweight brick by using Takari sand as the comparison. The Lightweight CLC bricks for 7, 14, 21, and 28 days were tested for weight volume, compressive strength, and the water absorption. The results of the CLC lightweight brick testing used Takari sand have average volume weight values during the treatment periods of 0.733 gr / cm3, 0.726 gr / cm3, 0.708 gr / cm3, and 0.683 gr / cm3 that is larger than the CLC light bricks that use mountain sand that was 0.643 gr / cm3, 0.625 gr / cm3, 0.611 gr / cm3, and 0.564 gr / cm3. The value of CLC lightweight brick which used Takari sand during the treatment period was 0,808 MPa, 0,892 MPa, 0,931 MPa, 0.975 MPa bigger than the CLC light brick strength which used the Gunung Boleng sand which was 0.592 MPa, 0.642 MPa, 0.708 MPa, 0.814 MPa. The water absorption value of CLC light brick that used Takari sand is less than 18,161% compared to the water absorption value of CLC light bricks that used Mount Boleng which is 21,747%.
PENGARUH SUHU CURING BETON TERHADAP KUAT TEKAN BETON Mooy, Merzy; Simatupang, Partogi H.; Frans, John H.
Jurnal Teknik Sipil Vol 6, No 1 (2017)
Publisher : Jurnal Teknik Sipil

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Abstract

Concrete is mostly used in the world of construction due to cheap price and easy implementation. However extensive knowledge is required about the quality of basic materials, ways of making, curingto increase concrete function to be more leverage.The purpose of this study is to know about the effect of curing temperature to concrete compressive strengthand which one of curing temperature that produce the optimal compressive strength, compressive strength by elevated temperature curing time 28 days that projected by long cycle steam curing method and maturity method, also the compressive strength rate ratio by normal curing temperature, low and elevated curing temperature.Based on the calculation of the results obtainedthe effect of curing temperature to average concrete compressive strength by normal curing temperature 29 °C is 23,85 MPa, low curing temperature -10 °C is 26,29 MPa, and elevated curing temperature in the oven 87,5 °C is 31,80 MPa so that the most optimal concrete compressive strength is by elevated curing temperature. The concrete compressive strength that projected by long cycle steam curing method and maturity method is 27,06 MPa. The compressive strength rate ratio by normal, low and elevated curing temperature is 0,85 : 0,94 : 1,14
BAHAYA KEGEMPAAN DI WILAYAH PULAU ALOR Putra, Liberichie P.; Simatupang, Partogi H.; Sir, Tri M. W.
Jurnal Teknik Sipil Vol 7, No 1 (2018): Jurnal Teknik Sipil
Publisher : Jurnal Teknik Sipil

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Abstract

Pulau Alor merupakan salah satu wilayah yang memiliki aktivitas seismisitas dan tektonik yang tinggi. Upaya mitigasi perlu dilakukan secara optimal guna meminimalisir dampak dari bencana tersebut. Analisis bahaya kegempaan dengan metode Probabilistic Seismic Hazard Analysis (PSHA) merupakan salah satu upaya mitigasi. PSHA bertujuan untuk mengetahui batasan intensitas gempa tertentu dengan berdasarkan pada nilai kemungkinan terlampui pada suatu periode tertentu. Tahapan penelitian meliputi kajian literatur, pengumpulan dan pengolahan data gempa, identifikasi sumber gempa, dan analisis menggunakan persamaan atenuasi. Data katalog gempa didapatkan dari United State Geological Survey (USGS). Persamaan atenuasi yang digunakan adalah Campbell & Bozorgnia (2008), Youngs et.al (1997), Boore & Atkinson (2003) dan Boore & Atkinson (2008). Hasil penelitian menunjukkan nilai percepatan tanah maksimum (PGA) di batuan dasar untuk Pulau Alor bervariasi dari 0,4849 g – 0,5260 g. Grafik respon spektrum hasil penelitian menunjukkan nilai yang lebih besar dibandingkan dengan grafik respon spektrum SNI-1726-2002 dan SNI-1726-2012. Berdasarkan peta gempa hasil penelitian menunjukkan Pulau Alor bagian timur memiliki nilai PGA terbesar, sedangkan Pulau Alor bagian barat memiliki nilai PGA terkecil.Alor Island is one of the high seismic and tectonic activity area. Optimal mitigation effort is needeful to minimize the disaster impact. Seismic hazard analysis in Probabilistic Seismic Hazard Analysis (PSHA) method is that one. The purpose of PSHA is to figure out the certain earthquake’s intensity with based on the exceed of probabilistic’s value at certain periods. The Stage of study include literature study, collecting and processing seismic data, identifies of earthquake’s source and analysis with attenuation equation. Earthquake katalog data from United State Geological Survey (USGS). Attenuation equation used Campbell & Bozorgnia (2008), Youngs et.al (1997), Boore & Atkinson (2003) dan Boore & Atkinson (2008). The result of this study shows the peak ground acceleration (PGA) in bed rock for Alor Island varied from 0,4979 g – 0,5680 g. Spectrum response graph from result of study is greater than spectrum response graph from SNI-1726-2002 and SNI-1726-2012. Based on the result of earthquake map study shows eastern of Alor Island have largest PGA value, while in the western of Alor Island have the smallest PGA.
PENGARUH SUBSTITUSI PARSIAL SEMEN DENGAN ABU TERBANG TERHADAP KARAKTERISTIK TEKNIS BETON Simatupang, Partogi H.; Sir, Tri M. W.; Kurniaty, Anna S.
Jurnal Teknik Sipil Vol 5, No 2 (2016): JURNAL TEKNIK SIPIL
Publisher : Jurnal Teknik Sipil

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Abstract

Partly or totally substitution of cement with another environmentally products in making concrete become the alternative. In this research the composition of the fly ash used as a partial replacement of cement in concrete as much as 40% out of total mass of cement (High Volume Fly Ash Concrete) and then will be compared with normal concrete about the technical characteristics of the two types of concrete. The purpose of this research was to determine the effect of partial replacement of cement with fly ash in concrete on technical characteristics of concrete which are specific gravity of concrete, compressive strength of concrete and concrete abrasion. The results obtained by the technical characteristics of concrete at the concrete age of 56 days for normal concrete has an average of specific gravity is 2434.39 kg/m³ with an average of compressive strength is 22.72 MPa and concrete abrasion percentage is 19.74%, for HVFA concrete has an average of specific gravity is 2407.22 kg/m³ with an average of compressive strength of 22.51 MPa and concrete abrasion percentage is 20.12%. The result of this research shows that the effect of the partial replacement of cement with fly ash in concrete produce the technical characteristics of concrete which are specific gravity of concrete, compressive strength of concrete and concrete abrasion are similliar with the technical characteristics of normal concrete.
STUDI PARAMETRIK BETON BERTULANG DUA ARAH Atok, Dominikus K. I.; Ramang, Ruslan; Simatupang, Partogi H.
Jurnal Teknik Sipil Vol 7, No 1 (2018): Jurnal Teknik Sipil
Publisher : Jurnal Teknik Sipil

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Abstract

Struktur pelat memiliki peranan yang begitu penting menjadi alasan dilakukannya penelitian ini, Penelitian ini betujuan mengetahui ukuran maksimum yang dapat dicapai pelat beton bertulang dua arah dan peruntukan pelat berukuran maksimum jika dikaitkan dengan fungsi bangunan. Penelitian menggunakan bantuan program komputer SAFEv.12untuk menganalisa seluruh data penelitian yakni variasi geometri pelat, variasi ketebalan dan mutu beton pelat, beban mati serta beban hidup guna memperoleh output berupa lendutan. Ukuran maksimum yang dapat dicapai pelat beton bertulang dua arah dengan rasio panjang bentang sama dengan satu (ly/lx=1) ialah pelat 8,0 m x 8,0 m setebal 25 cm dengan mutu beton K-300 (fc’=24,900 MPa). Beban hidup terbesar yang dapat diterima oleh pelat maksimum 8,0 m x 8,0 m ialah 3,83 kN/m2, untuk beban hidup yang lebih besar intensitasnya dipastikan lendutan pada permukaan pelat maksimum 8,0 m x 8,0 m akan melebihi lendutan aman. Sedangkan ukuran maksimum yang dapat dicapai pelat beton bertulang dua arah dengan rasio panjang bentang sama dengan dua (ly/lx=2) ialah pelat 4,0 m x 8,0 m setebal 25 cm dengan mutu beton K-300 (fc’=24,900 MPa). Beban hidup terbesar yang dapat diterima oleh pelat maksimum 4,0 m x 8,0 m ialah 11,97 kN/m2.The plate or slab structure has such an important role, that’s the reason for do this study, researchers want to know the maximum size a two-way bone-reinforced concrete plate can achieve, and to know are the maximum plate or slab can be used for all building function according to SNI-1727-2013. The study used SAFEv.12 computer program to analyze all the research data like variation of plate geometry, variation of thickness and quality of concrete plate, dead load and live load to obtain output of deflection. The maximum size that a two-way bone-reinforced concrete plates can achieve with the ratio of the length of the span is equal to one (ly / lx = 1) is 8.0 mx 8.0 m thickness 25 cm with the quality of K-300 (fc '= 24,900 MPa) . The largest acceptable live load by the maximum 8.0 m x 8.0 m plates is 3.83 kN / m2, for larger live loads the intensity is ensured that the deflection at the maximum plate surface of 8.0 m x 8.0 m will exceed the safe deflection . While the maximum size that a two-way bone-reinforced concrete plates can achieve with a ratio of length of span is equal to two (ly / lx = 2) is a 4.0 m x 8.0 m thickness of 25 cm with a K-300 (fc '= 24,900 MPa ). The largest acceptable live load by the maximum plate of 4.0 m x 8.0 m is 11.97 kN / m.2
STUDI PARAMETRIK PERTEMUAN BALOK KOLOM INTERIOR PADA PORTAL BETON BERTULANG MENGGUNAKAN METODE STRUT AND TIE Simatupang, Partogi H.; Hunggurami, Elia; Ina, Aditya B.
Jurnal Teknik Sipil Vol 5, No 1 (2016): JURNAL TEKNIK SIPIL
Publisher : Jurnal Teknik Sipil

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Abstract

Untuk mendesain D-region diperlukan analisa yang lebih mendalam dengan berdasar pada bentuk trajektori tegangan elemen yang ditinjau. Tujuan dari penelitian ini adalah untuk mengetahui bentuk trajektori tegangan, jumlah tulangan serta konfigurasi penulangan pada daerah pertemuan balok kolom interior berdasarkan metode Strut and Tie dibandingkan dengan metode konvensional. Pada penelitian ini, pemodelan strut and tie dilakukan pada pertemuan balok kolom interior dari portal beton bertulang 2 lantai. Trajektori tegangan pada pertemuan balok kolom interior memiliki bentuk yang menyilang antara trajektori tekan dan trajektori tarik. Studi parametrik pertemuan balok kolom interior pada portal beton bertulang menggunakan metode Strut and Tie menghasilkan jumlah tulangan yang lebih sedikit dibanding metode konvensional dengan persentase perbedaan terhadap metode SNI 03-2847-2002 sebesar 14,18%, sedangkan terhadap metode R. Park dan T. Paulay sebesar 3,58%.
PENGARUH PENAMBAHAN SILICA FUME TERHADAP KUAT TEKAN REACTIVE POWDER CONCRETE Simatupang, Partogi H.; Nasjono, Judi K.; Mite, Kresensia G.
Jurnal Teknik Sipil Vol 6, No 2 (2017): Jurnal Teknik Sipil
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Abstract

Reactive powder concrete merupakan campuran yang meniadakan agregat kasar. Dalam penelitian ini komposisi dari silica fume adalah 0%, 9%, 18%, 27%, 36% dan 45% dari masa semen. Tujuan dari penelitian ini adalah mengetahui kuat tekan reactive powder concrete akibat penambahan komposisi silica fume dan mengetahui presentase optimal silica fume terhadap kuat tekan beton. Benda uji yang digunakan adalah berbentuk silinder dengan ukuran 5 cm x 10 cm. Setiap variasi terdapat 5 benda uji, sehingga total pengujian adalah 30 benda uji. Dan umur rencana 14 hari.Hasil percobaan I kuat tekan rerata untuk semua variasi yang dihasilkan < 40 MPa, maka dilakukan percobaan II yaitu dengan ditambahkan volume dari superplasticitersebanyak 2 kali data awal. Terdapat 2 benda uji setiap variasi sehingga total keseluruhan adalah 12 benda uji. Hasil percobaan II kuat tekan rerata untuk variasi 0% = 42,02 MPa, 9% =43,29 MPa, 18% = 45,83 MPa, 27% = 48,38 MPa, 36% = 43,29 MPa dan 45% = 42,02 MPa. Presentase optimal silica fumeadalah 26,28%. Reactive powder concrete is a mixture of coarse aggregate negates. In this study the composition of silica fume are 0%, 9%, 18%, 27%, 36% and 45% from weight of the cement. The purpose of this study are knows reactive powder concrete compressive strength due to the addition of silica fume composition and know the optimal percentage of silica fume on compressive strength of concrete.Test object created is cylindrical with the size 5 cm x 10 cm. There are 5 specimen all of the variation. Total of the specimen is 30. And treatment time’s 14 days.The result of the first experiment a mean compressive strength for all of variationare smaller than 40 MPa then conducted second experiment. At the experiment added volume of superplasticiter 2 times first experiment.There are two specimen all of the variation so have 12 specimen’s. The result of the second experiment a mean compressive strength for a variation 0% = 42,02 MPa, 9% =43,29 MPa, 18% = 45,83 MPa, 27% = 48,38 MPa, 36% = 43,29 MPa and 45% = 42,02 MPa. Optimal percentage of silica fume are 26,28%.
STUDI KELAYAKAN PENGGUNAAN TANAH PUTIH SEBAGAI PENGGANTI AGREGAT HALUS (PASIR) TERHADAP KUALITAS BETON Hunggurami, Elia; Simatupang, Partogi H.; Lori, Alfred L.
Jurnal Teknik Sipil Vol 4, No 1 (2015): Jurnal Teknik Sipil
Publisher : Jurnal Teknik Sipil

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Abstract

Keterbatasan material beton dalam hal ini agregat halus (pasir) di berbagai daerah masih menjadi kendala utama, sehingga menyebabkan masyarakat menggunakan hasil alam lainnya sebagai pengganti pasir. Salah satunya di desa Buraen Kabupaten Kupang yang dimana masyarakat desa Buraen Kabupaten Kupang sering menggunakan tanah putih sebagai bahan pengganti pasir dalam campuran beton.Penggunaan tanah putih ini tentunya akan berpengaruh pada campuran beton dan kualitas dari beton yang di hasilkan. Penelitian ini bertujuan untuk mengetahui kelayakan dan pengaruh tanah putih terhadap kualitas beton.Benda uji yang digunakan dalam penelitian ini adalah silinder beton dengan ukuran diameter 15 cm, tinggi 30 cm untuk uji kuat tekan dan uji keausan beton sebanyak 45 sampel. Di mana sampel tersebut akan diuji dalam 3 waktu, yaitu 7 hari, 14 hari, dan 28 hari. Sampel – sampel tersebut akan diberi 5 perlakuan persentase pergantian tanah putih terhadap pasir yakni 0%, 25%, 50%, 75%, dan 100%. Kuat tekan rencana yang ditetapkan adalah sebesar 20 MPa. Kuat tekan beton yang dihasilkan pada umur 28 hari dengan menggunakan tanah putih sebagai pengganti agregat halus beton pada persentase 0%, 25%, 50%, 75%, dan 100% tanah putih berturut-turut sebesar 20.10 MPa, 21.04 MPa, 22.65 MPa, 16.51 MPa, 4.44 MPa dimana persentase optimumnya pada persentase 50%. Sedangkan pada pengujian keausan beton pada persentase pergantian 0%, 25%, 50%, 75%, dan 100% tanah putih berturut-turut nilai keausannya sebesar 37.98%, 42.85%, 40.90%, 45.95%, dan 52.08%. Limitations of concrete materials in this fine aggregate (sand) in various regions is still a major obstacle, causing the public to use other natural products as a substitute of sand. One of them inBuraen Villageof Kupang Regency where villagers often use lime stone as a sand substitute in concrete mixtures. Use of this lime stone will certainly affect the concrete mix and the quality of concrete produced. This study aims to determine the feasibility and effect of the use of lime stone on the quality of concrete.Test specimens used in this study was a concrete cylinder with a diameter of 15 cm, height 30 cm for compressive strength test and wear test as many as 45 samples of concrete. In which samples are to be tested in 3 times, which is 7 days, 14 days, and 28 days. The sample will be given in 5 treatments the percentage change lime stone against the sandthat is 0%, 25%, 50%, 75%, and 100%. Compressive strength of the plan is 20MPa.The resulting concrete compressive strength at 28 days by using a lime stone as a substitute for concrete fine aggregate on the percentage of 0%, 25%, 50%, 75%, and 100% lime stone row at 20.10MPa, 21.04 MPa, 22.65 MPa, 16.51 MPa, 4.44 MPa where the optimum percentage to the percentage of 50%. While the wear testing of concrete on the percentage change of 0%, 25%, 50%, 75%, and 100% lime stone consecutive wear value of 37.98%, 42.85%, 40.90%, 45.95%, and 52.08%.
Co-Authors Alfred L. Lori, Alfred L. Andi Kumalawati Atok, Dominikus K. I. Atok, Dominikus K. I. Bambang Sunendar Denik S. Krisnayanti Djema, Venantius K. Eban, Kornelis K. Eban, Kornelis K. Elia Hunggurami Ina, Aditya B. Ina, Aditya B. Iswandi Imran Ivindra Pane John Hendrik Frans Judi K. Nasjono Jusuf J. S. Pah Kaputing, Arlend R. P. Kurniaty, Anna S. Kurniaty, Anna S. Laiskodat, Patrik A. A. Merzy Mooy Mite, Kresensia G. Mite, Kresensia G. Putra, Liberichie P. Putra, Liberichie P. Ruslan Ramang Siagian, Richard B. Siallagan, Gisella D. Siallagan, Gisella D. Sudiyo Utomo Touselak, Iin A. L. Tri M. W. Sir Wadu, Verry A. Yofita Sandra, S.Pd., M.Pd., Zico Farlin, Dr. Budiwirman, M.Pd.,