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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL J-Sil (Jurnal Teknik Sipil dan Lingkungan)
Yanuar Chandra Wirasembada
Program Studi Teknik Sipil dan Lingkungan, Sekolah Pascasarjana IPB
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Transportation

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Penerapan Zero Runoff System (ZROS) dan Efektivitas Penurunan Limpasan Permukaan Pada Lahan Miring di DAS Cidanau, Banten Wirasembada, Yanuar Chandra; Setiawan, Budi Indra; Saptomo, Satyanto Krido
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 23, Nomor 2, DESEMBER 2017
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (916.23 KB) | DOI: 10.14710/mkts.v23i2.15983

Abstract

Runoff is one of flood and erosion causal factor in Indonesia. Runoff occurred when rainfall cannot be infiltrated and flowed on the ground surface. Cidanau watershed has quite high rainfall average (2573 mm/year) so it has high runoff potential. Zero Runoff System (ZROS) is one of water conservation way which can infiltrate runoff to the ground using permeation structures. ZROS’s successful parameter in order to decreasing runoff rate can be observed by the soil water content differences before and after ZROS application. Soil water content estimation was conducted by water balance model with and without runoff and then it is compared with soil water content from measuring. The simulation results indicated that soil water content in the research field before and after ZROS application is 0.476 and 0.569 m3/m3 respectively. The simulation is also conducted for past 10 years (2004-2013) and resulted higher soil water content if ZROS were applied. This results indicates that ZROS capable to decrease and permeate runoff to the ground and then increase soil water content level. Water balance model with and without runoff has coefficient of determination (R2) 0.606. It means that this model could simulate the soil water content differences before and after ZROS application valid relatively.
Pendugaan Reliability Waduk Nadra Krenceng PT. Krakatau Tirta Industri Wirasembada, Yanuar Chandra; Saptomo, Satyanto Krido; Saputra, Muhamad Budi
Jurnal Teknik Sipil dan Lingkungan Vol. 1 No. 2: Agustus 2016
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.1.2.101-110

Abstract

The increasing of high population rate, plus there was a new steel industry named PT. Krakatau Posco in Cilegon has made higher demand of  clean and raw water. The Volume of Nadra Krenceng reservoir used by PT. Krakatau Tirta Industri is still doubted to fulfill water demand in Cilegon. The purpose of this research  to analyze how much the reservoir volume capacity that will always be available and makes the program with Visual Basic Application in Microsoft Excel. The reliability calculation of Nadra Krenceng reservoir was conducted using three methods; F.J Mock, NRECA dependable discharge, and simulation the result of both methods use Weibull Method. The simulation result of Weibull Method shows for F.J Mock dependable discharge with probability of 95%, 90%, 80% and 50% are 5,023,095 m3; 5,733,905 m3; 7,215,525 m3; and 11,600,385 m3 respectively. For NRECA Method simulation, the result with the same series probabilities are 3,831,718 m3; 4,531,326 m3; 5,930,542 m3; and 10,128,191 m3 respectively. The Probabilities used by PT. KTI to guarantee the water availability in Nadra Krenceng reservoir is 80%. To conclude, the available volume of Nadra Krenceng reservoir now 7,215,525 m3 for F.J Mock Method and 5,930,542 m3 for NRECA Method. Both of calculation of water availability of Nadra Krenceng reservoir could achieve good enough accuracy. The R2 values for F.J Mock Methods is 0.685 and 0.653 for NRECA method.
PERENCANAAN TANGKI SEPTIK KOMUNAL DI DESA SUWARU, KECAMATAN PAGELARAN, KABUPATEN MALANG, JAWA TIMUR Setjo, Teguh Budiaji; Saptomo, Satyanto Krido; Wirasembada, Yanuar Chandra
Jurnal Teknik Sipil dan Lingkungan Vol. 1 No. 3: Desember 2016
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.1.3.159-173

Abstract

Environmental sanitation problems that occurred in Suwaru is septic tanks build too close to water sources such as wells and domestic waste disposal directly into the river. The purpose of this study is to determine the communal septic tank to achieve optimum and effective placement for the people in Suwaru, while also making the design communal septic tanks and leach fields communal septic tanks. The exact location of the study conducted in Suwaru, Pagelaran, Malang. The communal septic tank designed by four steps. These steps are estimating the population, calculating the dimensions of communal septic tanks, land mapping at the site plan and creating detailed engineering design (DED) of a communal septic tank. Septic tanks planned split into two service areas taking into account the difference in elevation of the service area. According to population projections, draining time (N) 5 years. Dimensions to accommodate the volume of waste that must be provided, with a height assumption of the septic tank is 4.5 m, obtained length is 10 m and width is 5 m to both septic tank.  
Co-Authors Budi Indra Setiawan Saputra, Muhamad Budi Satyanto Krido Saptomo Setjo, Teguh Budiaji