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OPTIMALISASI PEMANFAATAN AIR BAWAH TANAH UNTUK PENINGKATAN PRODUKTIVITAS PANGAN DI KECAMATAN KEDUNGTUBAN BLORA Hariyanto Hariyanto; Subandi Subandi
SIMETRIS No 18 (2014): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

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Abstract

Availability of water for irrigation in Sub Kedungtuban Blora very limited, in order to meet the water requirements for crops, the use of groundwater for irrigation is needed by farmers by providing capacity resources (people, equipment, materials) available, the necessary ability in utilization of water land for optimal irrigation. The main objective to be achieved is to know the amount of underground water point for irrigation water flow on irrigation and crop kebutuan especially corn, soybean and rice farmer in the district obtained Kedungtuban District. Blora and as a reference for the optimization and development of the wider utilization of underground water.Method used is descriptive method, a method that is designed to collect a variety of information about the circumstances that are going on, the way to determine the point of field surve underground water used, water flow, water demand fields, crop yields for farmers 17 villages . Sampling was done every village allotment quota sampling 5 total sample of 85 farmers deemed capable of representing the farmers.Crop farmers in the district of 17 villages taken Kedungtuban 5 representatives of farmers showed that the rice and maize yields in the last 5 years ie acquisition in 2009 (5.6 tons), in 2010 (5.6 tons), in 2011 (5, 6 tons), in 2012 (5.6 tons), in 2013 (5.6 tons) 5 area farmers average (1.04 ha) of the results of the maximum Keith prodoktivitas crops. Farmers who use groundwater number 57 farmers (67.06%) in eleven villages include Bajo, Gondel, Jimbung, Kemantren, Klagen, Pulo, Sidorejo, Cape, Wado, Panolan and Sogo. Rainfed area 22 farmers (25.88%) in five villages include Kalen village, Galuk, Kedungtuban, Nglandean and Ngraho and farmers who use the water flow Sunga by using a water pump 6 farmers (7:06%) in the two villages that cover ketuan and Jimbung, while average groundwater produced is 12.5 liters / sec.
PERBANDINGAN SISTEM IRIGASI TENAGA LISTRIK DAN SOLAR SEL SEBAGAI ENERGI PENGERAK POMPA AIR METODE SRI Hariyanto Hariyanto
SIMETRIS Vol 12 No 1 (2018): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

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Abstract

Infrastructure in Kentong Village, Cepu Subdistrict, Blora Regency is needed to develop technology for economical and right targeted irrigation management to facilitate land management for farmers in all growing seasons, mostly only growing rice into the main income of farmers, decreased due to the operational cost of irrigation water pump 1 (one) season of Rp. 3.175.000 for electricity, the condition is not as stable. The main objectives to be achieved are: 1). Low Oprational Cost (none) 2). Application of Solar-based Irrigation cell 3). Optimizing farmers harvest 4). Increase farmer's income. The analytical method SRI (System of Rice Intensification) calculation to know water loss and water requirement in irrigation network by redesigning pumping energy with 10 meters depth planning which already has maximum water discharge, Solar cell as a means to release the discharge of water that is distributed to irrigation plots that can be flowed in every agricultural area. Changes in electric power irrigation systems with the application of Solar Cell as a source of energy The water pump is capable of producing 1200 watts of power with an output pump capacity of 1 inch of water volume obtained 35liter / min; 2,100 lt / hr capacity of solar cell 6 hours / day capacity of water volume for 6 hours ie 12.6 m3 / day. Rice crops 1 ha 200 m3 able to wet for 10 days with 2 cm water level above ground level. To achieve water demand 200 m3 solerel beker for 16 days
PENGARUH PENGGUNAAN SEMEN SEBAGAI BAHAN STABILISASI TANAH LEMPUNG LUNAK DI DAERAH GROBOGAN PURWODADI Hariyanto Hariyanto; Suluh Jatmiko
JITEK (Jurnal Ilmiah Teknosains) Vol 7, No 1/Mei (2021): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.874 KB) | DOI: 10.26877/jitek.v7i1/Mei.8666

Abstract

Geographically Indonesia is located in the tropics, with conditions like this in the rainy season there will be high rainfall and in the dry season there will be hot weather. Weather changes result in repeated cycles of wetting and drying, so that the soil will experience changes in soil volume due to changes in water content. In such problems, special treatment of subgrade which has soft properties is needed. In this case the researcher will use cement as a soil stabilization material in the Grobogan, Purwodadi. The results obtained from the research: classification of Active clays (Montmorilonite), because the soil activity is more than 1, namely> 2.35%. From variations of mixing 0%, 17%, and 23% produce water content (w) of 21.820%, density (Gs) of 2.128%, dry weight (γd) of 1.43% shrinkage limit (SL) of 10.56%. Atterberg Limits limit with liquid limit value (LL) of 77.30% and plastic limit (PL) of 60.00%, plasticity index (PI) value of 17.30%. The relationship between OMC and MDD of native soil was obtained by maximum dry weight of 1.432 gr / cm3 at optimum water content of 10.320%. From the results of 17% soil + cement testing the optimum water content value was 8% and the maximum dry weight was 1.65 gr / cm3. From the results of 23% cement + soil testing, the optimum water content was 13% and the maximum dry weight was 1.6 gr / cm3.
EVALUASI KEMAMPUAN PENAMPANG SUNGAI NGARENG SEBAGAI SALURAN DRAINASE PRIMER DALAM MENAMPUNG DEBIT AKIBAT CURAH HUJAN Hariyanto Hariyanto; Eka Maresti
Jurnal Ilmiah Teknosains Vol 6, No 2/Nov (2020): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.745 KB) | DOI: 10.26877/jitek.v6i2/Nov.7039

Abstract

Jalan Ngareng merupakan kawasan permukiman padat penduduk dan pertokoan yang terletak di bagian utara Kecamatan Cepu, Kabupaten Blora. Kondisi geografis wilayah Ngareng yang lebih rendah bila dibandingkan dengan daerah di sekitarnya, meluapnya sungai Ngareng menjadikan wilayah ini menjadi salah satu titik langganan banjir di musim penghujan. Metode analisis data yaitu Normal, Gumbel, Log Normal, dan Log Pearson Type III. Berdasarkan empat metode yang diterapkan metode Gumbel paling mendekati persyaratan. Berdasarkan hasil analisa dan perhitungan, Sungai Ngareng tidak dapat menampung debit rencana  kala ulang 10 tahun  intensitas 62,388 mm/jam. Pada Sta 0+0 debit eksisting sungai sebesar 66,44 m3/detik, debit rencananya sebesar 191,845 m3/detik. Pada Sta 0+37,8 debit eksisting sungai sebesar 12,00 m3/detik, debit rencananya sebesar 94,519 m3/detik. Pada Sta 0+94,4 debit eksisting sungai sebesar 26,62 m3/detik, debit rencananya sebesar 180,615 m3/detik. Pada Sta 0+156,4 debit eksisting sungai sebesar 21,55m3/detik, debit rencananya sebesar 122,126 m3/detik. Pada Sta 0+218, debit eksisting sungai sebesar 32,88 m3/detik, debit rencananya sebesar 89,372 m3/detik. Dari hasil perhitungan, debit eksisting Sungai Ngareng lebih kecil dibandingkan debit rencana berakibat terjadi luapan.
ANALISIS PERBANDINGAN PERENCANAAN TEBAL PERKERASAN KAKU DENGAN METODE BINA MARGA 2003 DAN METODE AASHTO 1993 (Studi Kasus : Jalan Raya Blora Cepu, KM 21+000-KM 22+400 Kabupaten Blora Jawa Tengah) Hariyanto Hariyanto; Setyaningsih Setyaningsih; Bambang Bambang
JITEK (Jurnal Ilmiah Teknosains) Vol 7, No 2/Nov (2021): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (832.351 KB) | DOI: 10.26877/jitek.v7i2/Nov.9828

Abstract

Road pavement planning on the Blora-Cepu highway, Blora Regency is an effort to increase the capacity and quality of road services which aims to improve the smoothness, comfort and safety of driving on the road, increasing economic growth, industry and infrastructure in Blora Regency. apart from the increase in population from year to year and influenced by the movement of human and goods mobility both in the city center and in the region, so that road improvement in Blora Regency is important in supporting the smooth running of transportation and other fields. In order to solve this problem, in this case the researcher tries to analyze the thickness of the rigid pavement on the Blora-Cepu road section using the 2003 Bina Marga method and the AASHTO 1993 method. Raya Blora-Cepu KM 21 + 000 - KM 22 + 400 Blora Regency, Central Java Province, the thickness of the pavement concrete slab using the Bina Marga 2003 method is 20,200 cm and the pavement planning using the AASHTO 1993 method is 20.828 cm or 0.628 cm different. The thickness of the sub-base layer is 12.5 cm above the subgrade.
ANALISIS KEANDALAN KESELAMATAN BANGUNAN TERHADAP BAHAYA KEBAKARAN Hariyanto Hariyanto
JITEK (Jurnal Ilmiah Teknosains) Vol 8, No 1/Mei (2022): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jitek.v8i1/Mei.12034

Abstract

The development of buildings in Blora Regency continues to increase along with the development of the city. Every building has the potential and risk of fire hazard. Fire is one of the disasters that can cause considerable losses. Building safety is a must in a building. Building construction must be balanced with prevention of fire hazards. This prevention must be planned from planning, implementation and post-construction, so that the handling of fire hazards can be applied to the construction itself.The purpose of this study was to determine the weight of priority variables, building safety against fire hazards and the level of reliability in the PEM AKAMIGAS Vyatra VIII Cepu building. The method applied in this study uses the Analytical Hierarchy Process (AHP) method which is effective in helping to solve the problem of the reliability of fire fighting access in buildings, by distributing questionnaires to respondents who work in the construction of the PEM Akamigas Vyatra VIII Building.The results are the reliability of the value system for building fire safety (NKSKB) in the Cepu PEM AKAMIGAS Vyatra VIII building with an assessment of access and water supply for firefighters 13.32%, means of rescue 9.12%, passive protection 8.82%, active protection system 13, 86%. The level of reliability of protection in the PEM AKAMIGAS Vyatra VIII Cepu building is overall "Good" with a percentage of 87.12%. Research on fire risk, both in terms of buildings, occupants and the environment, is expected to be able to reduce and overcome the risk of fire hazards that can occur at any time.
PERENCANAAN DINDING PENAHAN TANAH SEKOLAH TINGGI TEKNOLOGI RONGGOLAWE CEPU Hariyanto Hariyanto; Yovi Cahyo Utomo
JITEK (Jurnal Ilmiah Teknosains) Vol 8, No 2/Nov (2022): JiTek
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/jitek.v8i2/Nov.14024

Abstract

Gedung Teknik Sipil STTR Cepu memiliki lereng rawan longsor  yang akan direncanakan dibangun Dinding Penahan Tanah bertipe kantilever dengan menggunakan material struktur beton bertulang yang digunakan untuk meningkatkan stabilitas lereng yang rentan mengalami pergeseran tanah setiap tahun. Tujuan dari penelitian ini untuk mengetahui dimensi yang dibutuhkan dinding penahan tanah untuk mencapai faktor keamanan yang diisyaratkan  dan besar tekanan tanah aktif serta pasif.Metode yang digunakan dalam penelitian adalah metode Rankine, Bowles, Hary C. Hardiyatmo, Hansen dan Vesic. Metode pengumpulan data dilakukan dengan mengambil data dari lapangan dan data dari literatur yang tersedia. Analisa data dilakukan dengan perhitungan manual berdasarkan metode-metode di atas.Hasil dari penelitian ini menunjukkan bahwa dinding penahan tanah tipe kantilever, dengan dimensi H = 2,5 m, B = 1,75 m aman karena nilai stabilitas sesuai dengan  diisyaratkan, yaitu sebesar Fgeser = 1,752, Fguling = 2,748, F = 7,301 dan besar tekanan tanah aktif serta pasif sebesar Pa = 20,655 kN, Pp = 24,049 kN