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PKM: KELOMPOK PENGERAJIN BERBAHAN KERTAS KORAN DI DESA BERABAN KECAMATAN KEDIRI KABUPATEN TABANAN Buana, I Komang Setia; Wardana, I Gusti Ngurah
Ngayah: Majalah Aplikasi IPTEKS Vol 10 No 1 (2019): Ngayah: Majalah Aplikasi IPTEKS
Publisher : Forum Layanan IPTEKS Bagi Masyarakat (FLipMAS) Wilayah Bali

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Tabanan is one of the regencies in the province of Bali which has many craftsmen of religious ceremonies and traditional Balinese tools. Especially in Kediri sub-district, Pandak Bandung village, and Beraban village, there are craftsmen of religious ceremonies and ceremonial instruments of Balinese culture. Balinese ceremonies have their shape, material and appearance very typical for Balinese. Types of ceremonies that are most often used in Balinese religious and cultural ceremonies such as sok keben, small bokoran, large bokoran, a place for flowers to pray, and dumplings. Mr. Made Suwetra. The two groups of craftsmen took the initiative to produce Balinese ceremonial tools with environmentally friendly materials as well as very affordable prices but the quality of the products can compete, namely used newspapers. Handicrafts from the two groups are very popular in the community, from the lower classes to the upper classes. So, then the two groups of craftsmen were made service partners in the community partnership program. The situation of the business conditions of the two partners is enough to promise the benefits of seeing, the average value of the two partners is quite large, where the partner of Mr. Bagus Manubawa's idea can reach 5 million per month while the partner Made Made Suwetra can reach 6 million per month. The profit of the two partners can be 60% - 80%, from the turnover because the material used is 70% of used newspaper waste. The number of workers from Ide Manubawa's Idea partner is 3 people while partner Made Made Suwetra is 4 people. If we look at it from the beginning of our partner's business, Manubawa's good idea has been started since 2013, one year earlier than I Made Suwetra's partner, starting from 2014. However, the partner has obstacles and expectations, namely Made Suwetra's partners want to make newsprint rollers into semi-finished material. Good Idea Partners Manubawa wants their products to be known by the wider community by using ICT as their intermediary. And from the results of partner business observations, there were also things that needed to be improved, such as production equipment, financial management, motive design and marketing training. So, the purpose of this community service is to help solve the problems of the two partners in order to increase the quantity and quality of their production, help make production management, management of raw materials, financial management and help product marketing through ICT and also provide sustainable marketing tools . The output target that has been achieved to date through this activity is the purchase of some equipment to support the business that has been carried out 70% such as oilless compressor machines, paper cutting tools, thick paper scissors, and others, training for business management and management improvement has been carried out 70%, Website creation to improve marketing has been completed 100%

ANALISIS PENYEBAB KERUSAKAN RUMAH SEDERHANA YANG DIDIRIKAN DI ATAS TANAH LEMPUNG DI DAERAH KEROBOKAN I G N Wardana; Suryanegara Dwipa RS
Jurnal Ilmiah Teknik Sipil Vol. 16, No. 2 Juli 2012
Publisher : Department of Civil Engineering, Udayana University

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Abstrak: Studi ini menganalisis kerusakan bangunan berlantai satu yang didirikan di atas tanah lempung di daerah Kerobokan, Kabupaten Badung. Tujuan studi untuk analisis penyebab kerusakan pada bangunan, apakah akibat pengembangan atau penurunan. Metode yang digunakan dengan pengujian tegangan pengembangan pada alat oedometer dengan metode MSO (Modified Swell Overburden). Hasil studi menunjukkan bahwa tanah di lokasi studi memiliki nilai batas cair rata-rata sebesar 84,7% dan indek plastisitas rata-rata sebesar 55%. Hasil pengujian dengan metode MSO menunjukkan bahwa pada kedalaman ini, ss yang terjadi adalah berkisar antara 0,37 – 4,80 kg/cm2. Tegangan vertikal total sv pada kedalaman ini adalah sebesar 0.28 – 0.41 kg/cm2. Sisa tegangan pengembangan pada kedalaman ini mengakibatkan terjadinya kenaikan permukaan tanah sebesar 0,004 – 0,143 m. Pada setiap kedalaman yang ditinjau, nilai ss selalu lebih besar dari nilai sv. Sehingga dapat disimpulkan bahwa kerusakan bangunan berlantai satu di daerah Kerobokan dan sekitarnya disebabkan oleh pengembangan tanah. Secara umum, pemecahan masalahnya adalah melawan tegangan pengembangan tersebut atau mengurangi pengembangannya. Salah satu metode untuk mengurangi pengembangannya adalah dengan mengurangi ketebalan lapisan lempungnya, atau dengan kata lain menambah kedalaman pondasi. Disarankan agar tanah di bawah pondasi digali sampai kedalaman 1,00 m. Untuk mengurangi kedalaman pondasi, galian pondasi ditimbun kembali dengan bahan timbunan yang tidak ekspansif sampai pada kedalaman dimana pondasi akan diletakkan.

PENGARUH PENAMBAHAN PASIR DAN PROSES PEMERAMAN TERHADAP STABILITAS TANAH EKSPANSIF Putu Anom Antara; I Nyoman Aribudiman; I Gusti Ngurah Wardana
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 17, No. 2, Juli 2013
Publisher : Department of Civil Engineering, Udayana University

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Tanah ekspansif merupakan tanah yang kurang baik digunakan sebagai dasar suatu bangunan. Karena tanah expansif merupakan tanah yang sangat berpotensi mengalami pengembangan dan penyusutan yang sangat besar. Sifat kembang susut yang besar dari lapisan tanah dasar ini dapat menimbulkan kerusakan pada konstruksi yang berada diatasnya. Mengingat sifat tanah lempung ekspansif yang kurang mendukung tersebut, perlu dilakukan perbaikan tanah. Salah satu stabilisasi dalam usaha perbaikan tanah adalah mencampur tanah lempung dengan pasir yang ditambah dengan proses pemeraman. Penelitian ini bertujuan untuk mengetahui karakteristik dari suatu tanah dan mengetahui bagaimana pengaruh penambahan pasir dan proses pemeraman terhadap stabilitas tanah lempung. Penambahan pasir ke dalam tanah lempung, menggunakan variasi campuran dengan persentase: 0%, 10%, 20%, 30% dan proses pemeraman yang dilakukan selama: 0 hari, 2 hari, 4 hari. Data yang diperoleh dari hasil penelitian meliputi nilai w, Gs, analisis ukuran butiran, LL, PL, SL, IP, Wopt,, qu, swelling, CBR dan Ak. Setelah dilakukan penelitian dan hasil penelitian diperoleh nilai IP rata-rata = 28,830% dan Ak rata-rata = 0,870 yang menunjukan tanah lempung di daerah padangsambian kaja pada kedalaman 1 m termasuk High Plasticity dan High Swelling Potential. Tanah pada kedalaman 1 m masih merupakan zona aktif ekspansif, di mana karakteristik tanahnya menunjukan tanah lempung tersebut termasuk High Swelling Potential. Nilai Indeks Plastisitas (IP) menurun, dengan nilai IP terendah sebesar 27,456% pada kadar penamabahan 30% pasir; nilai pengembangan, baik free swell maupun swelling mengalami penurunan, dengan nilai free swell terendah 1,957% dan nilai swelling terendah 0,588 pada kadar penambahan 30% pasir dan 4 hari pemeraman; nilai kuat tekan bebas tanah meningkat seiring penambahan pasir dan selama pemeraman. Penambahan pasir dan proses pemeraman memberi pengaruh yang signifikan terhadap kembang susut dan peningkatan kekuatan tanah.

ANALISIS PEMILIHAN MODA DENGAN REGRESI LOGISTIK PADA RENCANA KORIDOR TRAYEK TRANS SARBAGITA Ida Bagus Putu Widiarta; I Gusti Ngurah Wardana
Jurnal Ilmiah Teknik Sipil Vol. 15, No. 2 Juli 2011
Publisher : Department of Civil Engineering, Udayana University

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High traffic flows on the main road has increased traffic problems such as traffic congestion. Public transport system, Trans Sarbagita, is expected to solve such problem. It is required therefore, to study on mode choices on the Trans Sarbagita corridor. The study objective is to analyze the socio-economic characteristics of Terminal Mengwi-Kota-Pelabuhan Benoa Route and to analyze the mode choice model. Analysis was conducted on primary data obtained by performing Home Interview Survey. Data were analyzed using logistic regression models and using SPSS version 16.0. Mode choice model was represented by probability of using Public Transportation to Private Transportation as follows: ln [P (AU) / P (AP)] = -2103 +2872 (BUKERJAR) + 1409 (DAPATBUL), with contributions of BUKERJAR and DAPATBUL is 23.78% and 37.66% respectively. The result of analysis is to provide recommendation or information about modal choice according to the needs of the residents for intra-and inter-zones movement.

PENGGUNAAN VEGETASI (RUMPUT GAJAH) DALAM MENJAGA KESTABILAN TANAH TERHADAP KELONGSORAN I Nym. G. Santiawan; I Gusti N. Wardana; I Wayan Redana
Jurnal Ilmiah Teknik Sipil Vol. 11, No. 1 Januari 2007
Publisher : Department of Civil Engineering, Udayana University

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Keberadaan akar tanaman dapat mengurangi tegangan air pori positif dan memperbesar tegangan air pori negatif. Kemampuan ini meningkatkan kekuatan tanah khususnya tegangan geser dalam menjaga kestabilan lereng. Akar tanaman mempunyai kemampuan menyimpan air tanah yang baik dan menjaga kestabilan tanah terhadap perubahan kadar air akibat proses pembasahan dan proses pengeringan. Tujuan penelitian ini adalah untuk mengetahui perubahan pada kondisi initial, basah dan kering terhadap tegangan air pori dan kekuatan geser tanah dengan dan tanpa akar tanaman rumput gajah. Penelitian ini juga mempelajari peningkatan tegangan air pori negatif dan kekuatan geser tanah dengan dan tanpa akar tanaman. Lebih lanjut pada penelitian ini akan mempelajari stabilitas lereng dengan peningkatan parameter geser tanah yang didapat. Pengambilan benda uji dilakukan di daerah Bakas-Tohpati, Kabupaten Klungkung. Lokasi pengambilan benda uji merupakan daerah perbukitan dan dilindungi untuk mengurangi perusakan seperti perusakan tanaman dan perusakan yang lainnya. Pengambilan benda uji menggunakan metode undisturbed. Pengujian dilakukan dengan uji geser langsung (direct shear) dan triaxial CU (condolidated undrained) pada tiga kondisi benda uji yaitu kondisi initial, kering (Sr 0%) dan basah (Sr 100%). Dari hasil pengujian didapatkan hubungan antara kadar air (w), angka pori (e), derajat kejenuhan (Sr), kohesi efektif ( ), sudut geser dalam efektif ( ), tegangan air pori (u) dan kekuatan geser ( ). Hasil pengujian menunjukkan bahwa, pada proses pembasahan dimana derajat kejenuhan mendekati kondisi jenuh (Sr 100%), dapat meningkatkan tegangan air pori negatif dari benda uji dengan akar tanaman sebesar 45,45%. Pada proses pengeringan dimana derajat kejenuhan mendekati kondisi kering (Sr 0%), dapat meningkatkan tegangan air pori negatif dari benda uji dengan akar tanaman sebesar 80,0%. Proses pengeringan atau pengurangan kadar air lebih lanjut akan menurunkan kekuatan geser tanah, karena berkurangnya fase air dalam tanah. Kondisi ini membuat meniskus air pori menjadi berkurang. Sehingga tanah mengalami kondisi terpisah-pisah dan sebagian besar pori-pori tanah terisi udara. Akibat kondisi ini, ikatan butiran tanah menjadi berkurang. Keberadaan akar tanaman dapat meningkatkan nilai kohesi efektif ( ) sebesar 34,46%, sudut geser dalam efektif ( ) sebesar 22,45% dan faktor keamanan (FK) lereng rata-rata sebesar 33,18%. Jadi dapat disimpulkan bahwa keberadaan akar tanaman dapat meningkatkan kestabilan lereng terhadap kelongsoran.

PENGARUH PERUBAHAN MUKA AIR TANAH DAN TERASERING TERHADAP PERUBAHAN KESTABILAN LERENG I G. N. Wardana
Jurnal Ilmiah Teknik Sipil Vol. 15, No. 1 Januari 2011
Publisher : Department of Civil Engineering, Udayana University

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Drenched rain soil is a cause in reduction of the soil strength in line withincreasing ground saturation. Reduction of this strength reduces the slope stabilitywhich can cause sliding during the rainy season. Research was conducted bycarrying out simulations on slopes using a Stable 2004 Program on different slopegeometries, number of terraces and soil properties. The effects of drenched rain soilwere simulated by changing ground water levels. The effects of slope geometriesincluding inclination and height of slopes and earthquake loads were considered inthe analyses. To ease the analyses, the terraces were grouped into 4 which were T1,T2, T3, and T4 having 1, 2, 3 and 4 terraces respectively. The slope without terraceis referred as T0, the slope inclination changed from 1:1 to 1:2 and 1:3 withdifferent type of soils (clay, sand and variation of clay-sand). The analysis resultsshowed that the increase in ground water level resulted in the reduction of slopestability for the slope of 1:1, 1:2, and 1:3, the safety factors increased withincreasing number of terraces and the highest was thus in T4. For Sandy slope of1:1 with T1 terrace, the increase in safety factor was noticeable, while for T2, T3,and T4 types they were almost the same. Sandy slopes of 1:2 and 1:3 with terraceschanging from T1 to T4 causes the average safety factor increase in slightly. Clayslope with earthquake loads of 0.25 g and 0.45 g gave the average reduction insafety factor of 43% and 55% respectively. The earthquake loads of 0.25 g and 0.45 g caused reductions on safety factors of sandy slopes by 50% and 70%respectively.

KELAKUAN TANAH DENGAN SIFAT KEMBANG-SUSUT YANG TINGGI PADA STABILISASI TANAH DENGAN BAHAN SERBUK MARMER DAN BAHAN STABILIA I Gusti Ngurah Wardana
Jurnal Ilmiah Teknik Sipil Vol. 13, No. 2 Juli 2009
Publisher : Department of Civil Engineering, Udayana University

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Soil stabilization by adding limestone as admixture, was one of the mostpopular methods of chemical stabilization in Indonesia. However, with thedevelopment of soil stabilization method, stabilization using limestone has startedto become unfeasible due to the increase of limestone price. Cheaper methods ofchemical stabilization should be sought after. This alternative is apparent in theuse of powdered marble, a waste from marble product processing factories whichis relatively very cheap, and a new product called Stabilia as the only made-in Indonesia product of chemical stabilizer for soil with a price less than a third ofthat of the similar imported products.Research on the effectiveness of both powdered marble and Stabila as soilstabilizers is very limited. Therefore, in this study both of materials were tested onclay soil from Pejaten, Tabanan, in order to identify the changes of soil plasticity,the increase of the soil strength, the changes of soil swelling when the soil wassubmerged under water, the thickness of soil layer affected by water as a functionof the submersion time, the effect of soil initial water content when beingcompacted toward its swelling and its compressive strength, and the optimummaterial. The specimens were made by adding powdered marble that ranges from3% to 12% and the Stabilia content ranges form 0,3% to 3,0% of the total soilweight.From the test it was obtained that both materials caused reduction of soil swellingand increase of soil strength. In general, admixture with Stabilia presented betterresults in terms of free swelling and compressive strength of the samples.Apparently, Stabilia gave the performance almost similar to limestonestabilization. This study also gives a recommendation on the thickness of the soillayer to be stabilized and the optimum admixture content. It is also suggested thatevaluation of the performance of stabilizing agent should not be based on thechanges of soil plasticity alone, but it has to be determined according to theamount of allowable swelling, so that after the soil expands it is still able tosupport the load of foundation or vehicle tires. The influence of water submersionon the surface of the soil sample is merely felt at the relatively thin layer on the topof the sample.

KORELASI STRAIN RATE DENGAN KADAR ORGANIK PADA TEST KONSOLIDASI METODE CONSTANT RATE OF STRAIN I Gusti Ngurah Wardana; IB. Widiarta
Jurnal Ilmiah Teknik Sipil Vol. 14, No. 1 Januari 2010
Publisher : Department of Civil Engineering, Udayana University

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Study on the determination of strain rate on CRS consolidation testmethod had been done on clay soil with different plasticity level. Similar study onorganic clay soil had also been carried out, in which the study was limited onorganic soil with low percentage of organic content that can be tested using CRS method, and the maximum organic content is 16 %. Up to date there is no study yetcarried out using CRS method for soil with high organic content (> 16 %);therefore it has not yet known what is the strain rate range can be chosen.The problems arise if CRS method applied to organic clay soil are: what thecorrelation between strain rate magnitude and the organic content is; what thesuitable strain rate for soil with high organic content is; whether CRS method canbe used for all type of organic soil without modifying the available method.For this study, soil samples were prepared in laboratory by mixing organic soilwith caolinite with different percentage of organic content, i.e. 10 %, 20 %, 30 %,35 %, 40 %, and 45 %. The strain rate per minute chosen for the CRS consolidationtest were 0,04 %/minute; 0,02 %/minute; 0,008%/minute; 0,005 %/minute;0,002 %/minute. For obtaining correlation between organic content and strain rate,both CRS consolidation and conventional method were carried out.Test results and analyses show that the chosen strain rate and organic contentinfluence the test period, water void stress formed at the base of the samples (UB),the effective stress occurred, and the values of Cc and Cv. The final conclusion ofthis study is that when compared with the conventional consolidation test method,the CRS method gives reasonably a good correlation on strain rate:0.04 %/minutefor sample with 10 % organic content; 0,02 %/minute on sample with 20 % organiccontent; 0,008 %/minute on sample with 30 % and 35 % organic content0,005 %/minute on sample with 40 % organic content; and 0,002 %/minute onsample with 45 % organic content. The testing time on the same strain rateincreases when the soil organic content increases. It was also found that, at thesame organic content the testing time increases as the the strain rate decreases.

PENGGUNAAN BELERANG DAN ARANG KAYU SEBAGAI BAHAN PERBAIKAN TANAH LAPIS DASAR KONSTRUKSI JALAN I Gusti Ngurah Wardana
Jurnal Ilmiah Teknik Sipil Jurnal Ilmiah Teknik Sipil, Vol. 17, No. 2, Juli 2013
Publisher : Department of Civil Engineering, Udayana University

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Permasalahan yang timbul apabila studi tanah lempung Desa Pejaten Tabanan distabilisasi dengan campuran belerang dan arang kayu adalah bagaimana pengaruh penambahan belerang dan arang kayu dengan prosentase (%) yang berbeda terhadap nilai-nilai karakteristik tanah lempung Pejaten dan berapa besar prosentase (%) penggunaan belerang dan arang kayu yang optimum sebagai bahan campuran untuk perbaikan tanah lempung Pejaten, Tabanan. Untuk studi ini sampel tanah yang dites, dibuat di laboratorium dengan cara membuat campuran belerang dan arang kayu dengan prosentase yang berbeda, yaitu: 0%, 2%, 4%, 6%, 8%, dan 10% terhadap berat kering tanah. Perbandingan antara belerang dan arang kayu adalah 50%:50% dari prosentase penambahan campuran yang telah dibuat. Untuk setiap prosentase (%) penambahan campuran belerang dan arang kayu yang dibuat 3 (tiga) buah benda uji. Untuk mendapatkan sifat fisik dan mekanis dari penelitian ini dilakukan tes ukuran butir, batas-batas atterberg, berat jenis (Gs), tes kepadatan, CBR dan tes kuat tekan bebas (UCT). Hasil tes dan analisa menunjukkan bahwa tanah desa Pejaten termasuk tanah lempung dengan Plastisitas tinggi (CH). Disamping peningkatan berat volume kering dan penurunan kadar air optimum (W opt,%), akibat penambahan prosentase belerang dan arang kayu didapatkan nilai CBR Design nilai tertinggi (optimal) yaitu 7,4% pada penambahan prosentase belerang dan arang kayu sebesar 6%. Pada nilai kuat tekan bebas (qu) dari tanah desa Pejaten mencapai puncaknya yaitu sebesar 3,8 kg/cm2 pada prosentase penambahan belerang dan arang kayu sebesar 6%.

KERAWANAN LONGSOR LERENG JALAN STUDI KASUS RUAS JALAN SUKASADA – CANDI KUNING Ririn Hartini; I W. Redana; I.G.N. Wardana
JURNAL SPEKTRAN Vol. 2, No.2, Juli 2014
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Slope stability analysis along roads Denpasar – Singaraja have been calculated using Felenius Method and Software Plaxis 8.2. This calculation was conducted using material model Mohr - Columb, soil cohesion (c) and tan f soil parameters. Calculations safety factor using phi – c reduction value, condition until structural failure occurs. The results of computation Felenius Method give stability value Fs < 1.5 which mean landslide would be accurred in this slope. Calculation using Plaxis 8.2 produce Fs > 1,5. This study has been on optimization of soil parameters, so that plaxis gives better result. This study may conclude that plaxis should be used with caution and with proper soil parameters

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