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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik International Conference on Coastal and Delta Areas
Faiqun Ni’am
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Computer Science & IT Earth & Planetary Sciences Engineering Other

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ANALISA KELAYAKAN EKONOMI BENDUNGAN RANDU GUNTING KABUPATEN BLORA Lalu Ardian Bagus Nugroho; Faiqun Ni’am; Soedarsono Soedarsono
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2017): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 8 2017
Publisher : Prosiding SNST Fakultas Teknik

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Abstract

Bendungan adalah bangunan yang dibangun untuk menampung air yang selanjutnya untuk kebutuhan masyarakat. Kabupaten Blora sering mengalami kekurangan air pada musim kemarau. Pemerintah Pusat melalui Balai Besar Wilayah Sungai Pemali- Juana. melakukan Proyek Pembangunan Bendungan Randugunting Kabupaten Blora. untuk menanggulangi masalah kekurangan air yang melanda Kabupaten Blora. Pada penelitian ini,menguji kelayakan proyek bendungan Randugunting. Analisa perhitungan dengan metode NPV, IRR, BCR, untuk mendapatkan nilai kelayakan Bendungan Randugunting  Hasil penelitian menunjukkan, bahwa pembangunan Bendungan Randugunting layak secara ekonomis dimana dalam keadaan normal NPV = Rp 256.601.892.069, B/C = 1,59 dan IRR= 17,70% bila terjadi perubahan biaya konstruksi naik 10% NPV = Rp 211.811.147.589, B/C = 1,44 dan IRR= 17,29%, dan bila terjadi kemunduran pelaksanaan 1 th penyelesaian proyek NPV = Rp 10.580.641.240, B/C = 1,02, dan IRR= 17,64%  dari segi ekonomi layak untuk dilaksanakan.Kata kunci: Bendungan , Analisa Ekonomi, IRR, NPV, BCR
The Study of Economic Feasbility Project of Embung’s Establishment in The Case to Supply People Needs of Water Sources (Study Case Project of Embungkalimati, Bapangan-Jepara District) Slamet Imam Wahyudi; Faiqun Ni’am; Ahmad Hidayawan
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Embungkalimati was a water building which utilize the stream water remains. Embung is located in Bapangan village, Jepara district. Embung establishment is functionate to supply people needs of water sources. Embungkalimati has 280 m of length with depth excavation upstream between 4,80 m and downstream about 2,60 m with wide of pool storage 22.950 m2. Embungkalimati could save 115.890 m3 of water volume. The capacity of water storage is 107.000m3. this study is purpose to calculate the costs of embung’s establishment, to find out the benefits and analixing the economic feasibility. Economic feasibility is calculated by comparing the benefits and the costs of benefits and costs rasio (B/C). The result of this study found that the costs of establishment is Rp 21.964.132.000,00. The calculate of the costs based on the price tag of water is B/C>1, it can be obtained the costs water Rp2.280/m3 for B/C 1,07, IRR 11%, the sensitivity is increase up to 10% and the benefits decrease up to 10% which is can be said that it was impact to the value of the costs and benefits. The Payback Period is still the same with the 8th year. So, it can be concluded that the project of Embungkalimati’s establishment project was appropriate for economics. Keywords: Costs of establishment, Price tag of water, B/C, IRR
Buton Natural Rock Asphalt (BNRA) Modified Base Course Material Rahmat Akbar Badaru; Randy Yudistira; Gatot Rusbintardjo; Faiqun Ni’am
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

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Abstract

In flexible pavement, base course is the layer immediately under the wearing surface layer. Because the base course lies close under the pavement surface, it is subject to severe loading. It follows the materials in a base course must be of extremely high quality. To get high quality of base course, research on treated base course with Buton Natural Rock Asphalt (BNRA) have been conducted. Amount of 10, 15, 20, 25, 30, and 35% BNRA by weight of base course aggregate are mixed in the base course aggregate. California Bearing Rasio (CBR) and direct shear test are performed to the mixed of BNRA-base course and also to the original base course to konw how far the influence of BNRA to improve the strength or quality of the base course. The test results show that with BNRA 25% the CBR value can increase from 52.30% to 98%, and cohesion change from 0.127 for original become 0.199 for base course treated BNRA, as well as angle of internal friction (φ) increase from 210 to 430. It can be concluded that BNRA is suitable to use as material for treated base. Keywords: Buton-Natural Rock Asphalt, Treated, Base Course, Improve, Strength.
Co-Authors Ahmad Hidayawan Gatot Rusbintardjo Lalu Ardian Bagus Nugroho Rahmat Akbar Badaru Randy Yudistira S Imam Wahyudi Soedarsono Soedarsono