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Riyanto Haribowo
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Badan Penerbitan Jurnal Fakultas Teknik Universitas Brawijaya Jln. MT. Haryono No.167, Malang, Jawa Timur – Indonesia, 65145 Telpon. (0341) 587710 / Fax. (0341) 551430
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Civil and Environmental Science Journal (CIVENSE)
Published by Universitas Brawijaya
ISSN : -     EISSN : 26206218     DOI : https://doi.org/10.21776/ub.civense
Core Subject : Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science
Civil and Environmental Science Journal (Civense) is an international journal, peer-reviewed research publication covering new concepts, theories, methods, and techniques related to science and engineering. The journal will cover, but is not limited to, the following topics: 1. Structural engineering 2. Construction management 3. Environmental engineering 4. Water resources and hydrologic engineering 5. Geotechnical engineering 6. Information technology 7. Coastal and harbor engineering 8. Surveying and geo-spatial engineering 9. Transportation engineering 10. Tunnel engineering 11. Construction materials
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 77 Documents
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Determining Infiltration Rate from Infiltration Measurement with Flooding Method by Turftech Infiltrometer Khaerudin, D Noorvy; Primantyo, Andre; Rahardika, Ryan
Civil and Environmental Science Journal (CIVENSE) Vol 2, No 1 (2019)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2019.00104

Abstract

The density of the soil in this study estimate parameters with a dry bulk density. variation of soil density based on urban land us and then grouped into heavy, medium, and high-density soil. the rate of infiltration testing is performed by using turftech infiltrometer. and then analyzed with an infiltation horton modification models. the specification of turftech double ring infiltrometer are 6.03 cm for inner ring diameter and 10.79 cm for outer ring diameter. the result of infiltration rate observations is infiltration rate for higher density soil and land slope had low influences. the results showed that the turftech ifiltrometer that is used produced well results with 87% accuracy compared with the horton equation infiltration rate model. for the measurement results feasibility, then the turftech infiltrometer unable to represent for the land slope and density, because from the regression test the relationship between land slope and density toward infiltration rate was not significant and obtained average of 38% from the obtained r2.
Analysis of Runoff Coefficient Value on Retention Ponds in Flores Island Krisnayanti, Denik Sri; Bunganaen, Wilhelmus; E. Hangge, Elsy; Munaisyah, Farah; A. Nursyam, Nurul; Khaerudin, Dian Noorvy
Civil and Environmental Science Journal (CIVENSE) Vol 2, No 1 (2019)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2019.00102

Abstract

Flores Island is one of four big islands in NTT province with an area ±13,540 km divided into 8 districts. The area is included in areas with unequal distribution of rainfall. Therefore, the amount of water availability during the dry season is relatively low then require to attempts of rainwater harvesting. One of the alternatives is by building a retention pond. The important parameter in the calculation of water availability is the value of runoff coefficient. The purpose of this research is to invent the runoff coefficient value of 30 retention ponds in 8 districts of Flores Island. In this study use rainfall data, climatology and technical of retention basin for the analysis of run off coefficient. The analysis method uses the Penman modification for evapotranspiration calculation and method F.J. Mock for discharge calculation. The result in graphical model uses monthly rainfall data and land slope data. Based on the analytical calculation method, the value of run off coefficient for each district in Flores was ranging 0.00 - 0.72. The minimum value of runoff coefficient happened in November was ranging from 0.00 - 0.39, and the maximum value of runoff coefficient happened in January was ranging from 0.48 - 0.72.
Bed-Shear Velocity Measurement in Curved Open Channel Sumiadi, Sumiadi; Kironoto, Bambang Agus; Legono, Djoko; Istiarto, Istiarto
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 1 (2021)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2021.00401.9

Abstract

Generally, the condition of the rivers in Indonesia are alluvial rivers which had meanders, where the change in the river bed topography often occur. One of the parameters associated with changes in the river bed topography is bed-shear velocity, or Reynolds stress. The bed-shear velocity can be calculated by the Reynolds stress distribution method and the Clauser method which commonly used in straight channels. In fact, on natural channel there is a curve and even a meandering channel. With more complex flow conditions, the use of the Clauser method in curved channels can be questioned, is it still accurate or not. In this paper, both methods will be discussed by comparing the measurement data in the laboratory using 180 curved channel with flat bed. The results of data analysis show that the use of these two methods in curved channels produces an average difference of around 19.81%, where the Clauser method gives greater results and better tendencies. Apart from the differences in the results given, it can be said that the Clauser method as well as the Reynolds stress distribution method can still be used to calculate the bed-shear velocity in the curved channel. 
Calibration of surface runoff parameters with the hydrologic tank model using recursive digital filter and master recession curve Suryoputro, Nugroho; Suhardjono, Suhardjono; Soetopo, Widandi; Suhartanto, Ery
Civil and Environmental Science Journal (CIVENSE) Vol 2, No 2 (2019)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2019.00202.6

Abstract

There are two basic methods to calibrate the hydrological model: (1) the trial and error procedure; (2) the automatic calibration. The problem in the calibration method is the determination of the initial value of the parameters. This poses a problem for beginner model users. This paper presents the calibration results of surface runoff parameters in the hydrological tank model using recursive digital filter method and the master recession curve. The results indicate that the Recursive Digital Filter as a surface runoff separation method can be used for the initial approach to calibrate the tank model parameters
Drainage management study of the city of Merauke towards inundation by rainfall Kusumabrata, Luffi; Andawayanti, Ussy; Suhartanto, Ery
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 2 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00302.2

Abstract

One problem that is often faced by the City of Merauke as an urban area is inundation, which disrupts socio-economic activities and damages infrastructure in areas affected by inundation. The aim of this case study is to find ways to deal with inundation that occurs due to rainfall with return periods of 2 years, 5 years, 10 years, and 25 years. The inundation volume for the 2-year return period is zero, for the 5-year return period is 12.58 m3/sec with a height of 23.35 cm, for the 10-year return period is 18.57 m3/sec with a height of 25.63 cm, and for the 25-year return period is 20.22 m3/sec with a height of 27.75 cm. With the Microsoft Excel application, hydrological analysis was performed; spatial analysis using Geographic Information Systems (GIS) resulted in a map of the characteristics of the case study area, and with the Storm Water Management Model (SWMM), hydraulics analysis was performed on existing drainage channels along with simulated management.
Rainwater Harvesting as Alternative Source for Wudlu Water in Indonesia Susilo, Gatot Eko
Civil and Environmental Science Journal (CIVENSE) Vol 1, No 2 (2018)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2018.00102.3

Abstract

Indonesia is the country with the largest Muslim population in the world. And as a country with Muslim big population clean water for wudlu or purification must be available. Rainwater holds potential as an alternative source of wudlu water. Rainwater harvesting (RWH) for religious water supply is still very rare studied. Based on this, the research in this paper aims to calculate the potential supporting capacity of rainwater as an alternative sourceof wudlu water. Supporting capacity of rainwater harvesting (SCRWH) in this study was calculated by simulating inflow and outflow behavior at a rainwater harvesting facility in a mosque. Case study takes place at Nurul Iman Mosque in Southern Lampung. The mosque has an area of 168 m and able to accommodate 300 worshipers. Research show that the most effective reservoir size in the RWH facility in the observed mosque is between 15 to 30 m2 with SCRWH for wet years between 65% and 70% and for dry years between 44% and 53%, respectively. The availability of wudlu water in a mosque basically cannot be expected 100% comes from rain water only. In the application of RWH in a mosque the maintenance of theRWH facility must be undertaken well.
A Study of Irrigation Performance Index and Real Cost Value of Irrigation Operations and Maintenance in Surak Irrigation Area Prayogo, Tri Budi; Wahyuni, Sri; Iqbal, Muhammad
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 1 (2021)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2021.00401.4

Abstract

Irrigation Asset Management is required to maintain the value of irrigation asset function and condition. Surak Irrigation Area is located in Lawang Sub-District, Malang Regency. After resurveying in 2020, 21 points of damage were found in Surak Irrigation Area. Irrigation performance index was found to be 77.56% (moderate condition) for which the physical infrastructure aspect is 39.1%, the water availability aspect is 5.4%, the planting index aspect is 4.4%, the supporting facilities for operation and management aspect is 7.8%, the organizational and personnel aspect is 10.8%, the documentation aspect is 3.8%, and the Water User Association aspect is 6.3%. Priority calculation utilized the ranking method, which ranks asset values from the lowest to the highest. The result was that 24 assets are in moderate condition, 43 assets are in good condition, and 146 are in very good condition. The real cost value of irrigation operations and maintenance was calculated to be IDR 1,561,741,648, with IDR 208,506,890 for operating costs and IDR 1,353,234,758 for maintenance costs. For rehabilitation, it was found that 24 assets need regular maintenance and repair, 24 assets need regular maintenance, and 146 assets need routine maintenance
The analysis of rainwater harvesting carrying capacity on water domestic supply for dwelling areas in Indonesia Susilo, Gatot Eko; Jafri, Muhammad
Civil and Environmental Science Journal (CIVENSE) Vol 2, No 1 (2019)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2019.00106

Abstract

This research aims to promote the method to design rainwater harvesting facilities in Indonesian dwelling areas. The estimation of rainwater harvesting (RWH) carrying capacity is undertaken using a simulation involving rainfall, inflow, and outflow data. The research was undertaken in Natar sub-district, Southern Lampung, Indonesia. Daily rainfall data from Branti Airport from 2013 to 2017 are used for the simulation. Research shows that houses in the study area can supply approximately 35% of their domestic water needs by applying RWH. This means that the support capacity of rainwater harvesting in the study area revolves around that value. The research also shows intensity of rainfall will greatly affect the carrying capacity of RWH. In addition to rainfall, the economic ability of a family plays an important role in planning the dimensions of a RWH facility in a house. Finally, maintenance of RWH facilities on a regular basis is important to ensure the operational effectiveness of RWH.
The Dynamics of Flow Discharge and Suspension Flow Discharge in Volcano Watershed with Agroforestry Land Cover Hadini, La Ode; Sartohadi, Junun; Setiawan, Muhammad Anggri; Mardiatno, Djati
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 2 (2021): IN PRESS
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The suspension flow from the upper part of a volcano watershed, which has a very thick soil condition, is sensitive to landuse form. Agroforestry is the dominant landuse form in the volcanic landscape of Indonesia. There is a lack of detailed studies about suspension flow in the upper watershed where agroforestry is the land cover. This research, performed in agroforestry area, covered the correspondence between flow discharge and suspension flow discharge, the time lag of initial rain events and the formation of suspension flow; and the characteristics of the grain size of the suspensions during the flow. The suspension flow was measured at the outlet of a gully in key watershed areas, which yielded a total of 436 suspension data. The measurement analysis was conducted at every rain event in the field and in the laboratory. The crop characteristics in the rain catchment area were recorded in details during the field survey. The characteristics of the channels converging toward the gully system were observed during the field survey. There were three relationship patterns between the peak flow discharge and the peak suspension discharge, namely (1) the peak flow discharge corresponded to the peak suspension discharge, (2) the peak flow discharge preceded the peak suspension discharge, (3) the peak flow discharge occurred after the peak suspension discharge. The average time interval between the rain events and the occurrence of suspension flow was 17.7 minutes. The peak suspension content varied from 0.0016 g/L up to 4.71 g/L with an average of 1.03 g/L. The grain size of the suspension was dominated by 71-76% of clay fraction with an average of 73% at the rising phase and 68-71% of clay fraction with an average of 69% at the falling stage.
Application of Sediment Runoff Model to the Wlingi Reservoir Watershed, Indonesia Rahman, Kurdianto Idi; Sisinggih, Dian; Asmaranto, Runi
Civil and Environmental Science Journal (CIVENSE) Vol 3, No 1 (2020)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2020.00301.2

Abstract

Sedimentation is the main problem in Wlingi reservoirs. They are suffering from severe watershed erosion and a heavy load of volcanic ash ejected from the eruption of Mount Kelud. Wlingi reservoir is significantly affected by recurrent volcanic activities of Mount Kelud. After the 2014 eruption, the capacity of Wlingi reservoirs decreased by 82.5% or only 3.70 million m3 from the initial capacity of 24 million m3. To analyze the impact of volcanic eruption disaster on reservoir sedimentation an integrated numerical model of sediment is required. The Fujiyama model is an integrated sediment runoff model using a basin model composed of unit channels and unit slopes. The model seems suitable for a mountainous basin. The simulation results from the model explain that the mechanism of transporting sediment into the Wlingi Reservoir can be explained based on the type of sediment transport. The movement of sediment originating from Kelud Mountain in Kali Lekso is strongly influenced by rainfall duration compared to the intensity of the rainfall. Also, the simulation model results explained that the mechanism of sediment transportation is dominated by suspended load or bed load which when large discharges will move with the mechanism of suspended load sediment transport.

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