bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estimation of aquifer parameters using pumping tests: case study of hotel Makassar paradise
Authors: Suprapti A , Pongmanda S 
Published: February 2020

Abstract
The purpose of this study was to determine the aquifer parameters and the condition of groundwater in the study location, namely the continuity coefficient (Transmissivity, T), water retention (Storativity, S) and permeability coefficient (Hydraulic Conductivity, K). This aquifer parameter is very necessary, especially in the project to be excavated for basement construction, where the high groundwater is one of the problems that must be overcome when the excavation of the soil. This pumping test was carried out by making 10 investigation well points, namely 1 point of the pump well (TW) and 9 points of observation well (OW1-OW9). Thus the pump well (TW) is installed to a depth of 20 m, the end is 2 meters into the hard consistency clay layer. While 9 points of observation well (OW1 - OW9) were installed to a depth of 15 m, so that all the pipes were in a layer of the fine sand relative density of moderate just above the very stiff consistency clay layer. Based on calculations with the Theis method obtained: a) The cross-section A-A has a value of Transmissivity (T) ranging between 124.27 - 966.58 m2/day, Hydraulic Conductivity (K) ranges between 0.012 - 0.094 cm/s, Storativity (S) ranges between 0.084 - 0.472. b) The cross-section B-B has a value of Transmissivity (T) ranging between 230.14 - 621.37 m2/day, Hydraulic Conductivity (K) ranges between 0.022 - 0.060 cm/s, Storativity (S) ranges between 0.125 - 0.416.
Modeling of a healthy river boundary
Authors: Firdaus M , Selintung M , Lopa R T , Thaha M A 
Published: February 2020

Abstract
The concept used in river management as an effort to prevent flooding is one of them with the concept of hydraulic engineering, namely non-structural river management through efforts to restructure river banks as inundation areas. This concept is carried out by integrating the ecological and hydraulic components of the river. Ecological components on river banks can be used as hydraulic retention components that hold water flow so that flooding occurs on river banks. With the presence of puddles on the banks of the river, the ecological quality of the river can be maintained. Develop a river boundary determination model by optimizing the width of river banks. Maros River boundary with a distance of 50 meters from the edge of the riverbed which is the River Utilization Area. There is a meander or river bend that is quite sharp, that is, at Sta. 20 + 00 to Sta. 23 + 00 so the determination of the alignment follows the outer arch.
Preliminary sediment modeling at the confluence of the Mahakam and Karang Mumus River
Authors: Nur A , Hatta M P , Thaha M A , Suriamihardja D A 
Published: February 2020

Abstract
The sedimentation process can move slowly and continuously during sediment transportation is still ongoing from the mainland. The sediment evidence has been done by pairing the current bathymetric measurement of the previous data from the bathymetric map of the DISHIDROS of the Indonesian Navy 2011 in the confluence of the Mahakam and Karang Mumus River. Initially, the tidal measurements were carried out on 15-29 January 2019 while the bathymetry measurements were measured on 21-22 January 2019 during spring tide was over 800 m from upstream to downstream river confluences. Contour modeling measured using Software Surfer while the tidal is using the Admiralty method., to get discharge sediment performed contour coupling from both using AutoCAD software. The results of tidal analysis at the confluence of this river type Mixed Tide, Prevailing Semi Diurnal with MSL119 cm, HHWL 275 cm and LLWL-29 cm. Besides, the results of the sedimentation calculation showed an increase of 251,621.52 m3 in the tempo of 8 years from different Years of measurement. Most of the deposits occur on the opposite side of the Karang Mumus River, and this may be due to the small current velocity of the inner side of the Mahakam River that is curved towards the Karang Mumus River. Further research should also be modeled on current patterns and numerical modeling to ensure the morphological changes of the confluence of the present river.
The effect of wave reflection coefficient to the breaker parameter on OWEC breakwater
Authors: Puspita A I D , Pallu M S , Thaha M A , Maricar F 
Published: February 2020

Abstract
OWEC breakwater is a coastal structure with an integrated concept of the breakwater and overtopping wave energy converter. This breakwater WEC concept (OWEC breakwater) model has a reservoir at the rear of the breakwater peak. This reservoir serves to catch and collect overtopping waves that overflow through the top of the breakwater. The amount of overtopping discharge is influenced by many factors, one of them is the characteristics of the incoming wave, including the characteristics of the breaking wave on the surface of the structure, named the breaker parameter. The effect of wave reflection coefficient to the breaker parameter on OWEC (overtopping wave energy converter) breakwater is investigated experimentally as a preliminary study. The study is carried out in wave flume with regular waves. The OWEC breakwater model is simulated with slope variations and freeboard variations. The result showed that most of the breaker parameter types obtained are plunging (0.4 < 𝜉 < 2) and surging (𝜉 > 2), the result also showed that the higher the value of reflection coefficient, the higher the value of the breaker parameter.
Water security of river basins in West Java
Authors: Hatmoko W , Radhika  , Firmansyah R , Fathony A 
Published: February 2020

Abstract
West Jawa is a very important province in Indonesia. There are six river basins in West Jawa, namely: Ciliwung-Cisadane, Citarum, Cimanuk-Cisanggarung, Cisadea-Cibareno, Ciwulan-Cilaki, and Citanduy. The capital city of Jakarta is in the Ciliwung-Cisadane River basin, but the public water supply is supplied mostly from the Citarum River basin, which has three hydropower reservoirs and irrigates 240,000 hectares of rice field. Water security in West Jawa plays an important part in the sustainable development of the nation. This paper formulates and computes the water security for river basins in West Jawa. The method of constructing water security dimension is adapted from the Asian Water Development Outlook, having five dimensions of 1) household water security; 2) economic water security; 3) urban water security; 4) environmental water security; and 5) resilience to water-related disasters. At the river basin level, the water security indices are designed to be effective, simple, widely available, having no ambiguity, and directly related to the progress of infrastructure development. The water security results are presented as a radar diagram, and spatially in the thematic map. It is concluded that the overall water security score in West Java is “capable” (score of 3). The weakest security is Ciliwung-Cisadane and Citarum as “engaged” (score of 2). Both river basins are suffering from “hazardous” environmental water security.
Model management assessment of building waste material on impact cost during construction stage (case study in Makassar city)
Authors: Thoengsal J , Latief R U , Hamzah S , Rahim I R 
Published: February 2020

Abstract
The progress of multi-story building construction in Indonesia especially in developing regions such as Makassar City during the last ten years has experienced significant development. Where the proportion of overcast contributions due to the emergence of remaining material during building construction ranges (3-13.5)% which of course directly impacts the overall construction costs. The purpose of this study is to identify the remaining management factors of construction materials that are ideal for implementation by construction operators, conduct control assessments on the relationship of the effect of the application and potential management of the remaining construction materials to the impact of construction cost performance. The method used in this study was carried out by determining the population and sample number of building construction projects currently underway and a survey of the number of contractor representatives in Indonesia then collecting primary data in the form of distributing questionnaires to construction organizers, especially to experienced contractors, then subsequently. The expected results of this study are to obtain a management model concept for the remaining cost of building construction materials in the ideal construction stage that can be applied by the construction operators in this case to the implementing parties/contractors.
Practical production of lightweight concrete floor tiles
Authors: Faslih A , Kadir I , Umar M Z 
Published: February 2020

Abstract
The quality of concrete is influenced by fine aggregate. Lightweight concrete contains only fine aggregates. Tiles are one of lightweight concrete. The physical characteristics of fine aggregate need to be understood if you want to make a tile. For tiles to re-compete and attractive to use as home flooring, it is necessary to study to make light and aesthetic concrete tiles strong and aesthetic. This research is intended to make lightweight concrete based tiles. This research used the exploration method. The data begins with the selection of materials, work tools, and stages of manufacture. Information from various sources is captured and interpreted into a creative idea. The basic concept is done and developed pragmatically on the shape of the tile. The process of analysis is done qualitatively, so we get the form of tile. The tile shape is transformed from the parameters to the lightweight concrete-based tiles. This study concluded that the lightweight concrete-based tile material is made with the following stages: Preparation of work tools and work materials, basic coating, top-coating, printing, fresh tile removal, drying, polishing, as well as the application of resin oil.
Structural ductility of RBS on castellated beam subjected to cyclic loading
Authors: Aswad N H , Parung H , Irmawaty R , Amiruddin A A , Fakhruddin  
Published: February 2020

Abstract
RBS placement on a castellated beam on exterior connection structure with RBS position from column face refers to Prequalified Connection for Special and Intermediate Moment Frames for Seismic Application AISC 358-10, Article 5.8. The column beam test aims to evaluate structural ductility of the RBS on the castellated beam flange from the column face. The study was expected to explain the effect on column beam joints to provide input for planning earthquake-resistant building structures. The results show that the castellated test beam with RBS could withstand a load of 12.05 kN with a value of 4.2 structural ductilities.
Study and overview of the occupational health and safety management in the construction industry
Authors: Arifuddin R , Rahim I R , Aprianti E , Radiatullah A 
Published: February 2020

Abstract
The Occupational Health and Safety Management System is a part of the company’s risk management system for the creation of a safe, efficient and productive workplace. Construction Project in addition to paying attention to the timeliness, quality, and cost, also need to attention safety and health work. The regulation used as a reference for the implementation of OSH scope of the ministry of PUPR is No.05/PRT/M/2014. This research aims to analyze the influence of the policy of PUPR Regulation No.05/PRT/M/2014 on the improvement of OHS Management System performance in the construction project, and to formulate the improvement strategy that needs to be done in OHS Management System policy setting in the construction project. Data processing in this research is used smartPLS 2.0 program and Statistical Product and Service Solution version 22. Data analysis technique uses validity, reliability, normality, regression and descriptive analysis. The result of the regression analysis shows that every improvement of the policy variable will be followed by the improvement of OHS performance in the construction project. From the result of descriptive analysis, it is found that dominant elements have an effect and improvement strategy that can be done, that is the difference between OHS system and Safety Plan, the regulation concerning the potential of OHS hazard, and the importance of firmness to eliminate safety Plan document. The results of this study can be used by the government related to the policy improvement strategy so as to facilitate the related parties in implementing the OHS Management System in Construction Project.
Assessing effects of temporal changes in River water temperature on stratification in the Ariake Sea
Authors: Arifin A N , Yano S , Lando A T 
Published: February 2020

Abstract
The upward trend of river water temperature due to climate change has recently been confirmed. However, its effects on thermal stratification in coastal waters are not clear. Therefore, targeting the Ariake Sea – a semi-enclosed bay in the island of Kyushu, Japan – we continuously monitored river water temperature during and after August 2015 at the discharge observation stations of Class-A rivers that feed the sea, located in the non-tidal areas of the rivers and closest to the respective river mouths. Numerical simulations were performed on the density stratification in the Ariake Sea using the obtained hourly river water discharge and temperature data, to assess the effects of temporal changes in river water temperature on thermal stratification. It was shown that during a summer flood, river water temperature could influence the reproducibility of the development of thermal stratification depending on the river water temperature used, and the reproducibility of the base water temperature differed during the transition to the mixing period. Effects of river water temperature on the water temperature structure of the sea were indicated.
Development of eco-friendly paving block incorporating co-burning palm oil-processed tea waste ash
Authors: Caronge M A , Lando A T , Djamaluddin I , Tjaronge M W , Runtulalo D 
Published: February 2020

Abstract
The present study explores the development of eco-friendly paving block incorporating co-burning palm oil-processed tea waste ash (POPTA). POPTA was collected from the local tea processing plants and used to manufacture paving block at a local paving block industry with dosages ranging from 10 to 60% by cement weight. The properties of the paving block were investigated, including bulk density and compressive strength. Results show that the POPTA produced a lighter weight paving block. It also decreased the compressive strength of the paving block. Incorporating up to 40% of POPTA as cement replacement satisfied the minimum standard compressive strength requirements for the Class D paving block according to SNI-03-0691-1996. Utilization of POPTA in production paving block could mitigate the landfilling of this by-product and lead to the development of eco-friendly and economical construction materials.
Eco-drainage system planning with SWMM model: a case study of Sawah Liat drainage, Kuranji watershed in Padang City, Indonesia
Authors: Junaidi A , Putra H , Istijono B , Nurhamidah N , Utama M 
Published: February 2020

Abstract
Sawah Liat drainage is one area of drainage that the flow of water discharged into the Kuranji River in Padang City. It is a very vulnerable area to the flooding. Flooding was caused by high rainfall, land-use change, and river flooding. This area does not yet have a drainage network system. This research is to plan a new drainage system using the eco-drainage concept of adding a retention pond in the drainage network system. EPA-SWMM model was used to simulate the planned drainage network model and assisted with Global Mapper and ArcGIS for spatial analysis. Six simulation models are performed by combining two models of the drainage network, two land cover models, and two models of rainfall. The results showed that the drainage network models with retention ponds are more effective against controlling flooding. With simulation using a 5-year rainfall return period, there was no flood. For simulations using rainfall data on March 22, 2016, the depth of flooding could be decreasing from 0.2 m to 0.9 m. The retention pond can reduce the 5-year flood volume of 120,200 m3 or 59% of the total 203,710 m3
Effectivity of constructed wetland using Typha angustifolia in analyzing the decrease of heavy metal (Fe) in acid mine drainage
Authors: Zubair A , Abdullah N O , Ibrahim R , Rachma A R D 
Published: February 2020

Abstract
Coal mining in Indonesia mostly done by open mining. The most severe problem in open mining activities is Acid Mine Drainage (AMD) production. Acid mine drainage contains heavy metal (Fe) that will impact now and future living creatures. One of the increasing of acid mine water treatment after the mining process is by using a constructed wetland method. This research aims to analyze constructed wetland effectiveness with rate variation, the number of plants, and material composition (compost, gravel, and limestone). The aims are also to examine local plant of Tifa (Typha angustifolia) ability on decreasing heavy metal (Fe) of acid mine drainage according to Kaltim Regulation Number 02 the year 2011 on water quality standard of coal industries. The study used the method of constructed wetland using a surface flow system, and a vertical ascending flow operated continuously using the elevation. The built wetlands design uses an intermediate bulk container tank with 100 cm x 100 cm x 100 x cm reactor dimension. The result shows that the decrease of the efficiency acid mine water on surface flow constructed wetland for Fe as follows in a row 70.88% (reactor 4), 57.88% (reactor 2). The best Fe metal content absorption is obtained on plant amount 15 treatment with 0.001 L/s rate, with iron content absorption 3294 ppm (40.11%). Fe metal content decrease on compost is obtained to 20% compost treatment with 0.001 L/s rate, with iron content decrease 8728 ppm (89.23%).
Effects of change of density stratification due to Isahaya Sea-Dyke on the fate of anoxic water in the Ariake Sea
Authors: Tadokoro M , Yano S , Peizhi Q , Orrheim L 
Published: February 2020

Abstract
In this study, we aim to investigate the possibility that the construction of the Isahaya Sea-Dyke significantly causes anoxic water development in the bottom layer in the Ariake Sea, Japan. We numerically compared the vertical distribution of dissolved oxygen (DO) in the water column between two cases with the dyke and without it. As a result of this research, the followings are clarified: 1) DO totally decreased in Isahaya Bay due to construction of Isahaya Sea-Dyke; 2) The effect is relatively small during neap tide, but is larger in spring tide; and 3) The effect is not shown in the main body of the Ariake Sea.
Performance evaluation of sewage treatment plants in the building of Gowa Engineering campus
Authors: Mangarengi N A P , Selintung M , Zubair A , Mujahid N 
Published: February 2020

Abstract
One of the severe problems caused by anthropogenic activities is wastewater that is not appropriately treated. Faculty of Engineering Campus in Gowa, for instance, is one of the areas in Makassar City that has implemented an integrated sanitation system, namely STP (Sewage Treatment Plants). The type of research used in this study is quantitative analysis based on the evaluation. The research aims to evaluate the efficiency of the STP in the Engineering Faculty of Gowa by testing some parameters such as Total Suspended Solids (TSS), Biological Oxygen Demand (BOD), pH, Chemical Oxygen Demand (COD), oil and Grease from inlet and outlet samples. The purpose of the study is also comparing the evaluation results with the standard of Governor of South Sulawesi no. 69 of 2010 regarding quality standards and criteria for environmental damage in Makassar. Based on the evaluation results, all the parameters of STP in the Centre of Scientific (CSA) building, Classroom, Architecture, Civil, Naval, and Geology have met the quality standards. However, only in the COT building, some parameters do not meet the quality standard, which is TSS, BOD, and COD. It shows that the performance of STP in the faculty of engineering campus has worked well but not ideal.
The capability of green open space in absorbing carbon monoxide and carbon dioxide emissions in Balai Kota Makassar
Authors: Aly S H , Zakaria R , Kondorura C F 
Published: February 2020

Abstract
The economic growth will increase the transportation sectors roles in supporting the achievement of development goals. But transportation activities have negatives impact, where one of the negative impact of transportation activities is the high levels of pollutants due to emissions or release of smoke from motor vehicles. This study aims to determine the capability of green open space that exists, especially in the ability of trees and shrubs in absorbing carbon monoxide and carbon dioxide emissions generated by motor vehicles operating in Balai Kota Makassar. The research is qualitative. All data required for the analysis of the research are primary data or data obtained directly in the field. Primary data in this research are data obtained by counting the number of vehicles and the area cover by vegetation canopy. In this research, zonation system is applied because each area has different green open space requirement based on the emission load generated by motor vehicles passing in the area so that the research location is divided into 4 zones. To calculate the vehicle’s emission, it applies the equation of emission strength, and to calculate the emission absorption by vegetation is use vegetations area covers. The results showed in zones 1, zone 2 and zone 3, green open space existing already can absorb 100% carbon dioxide emissions and carbon monoxide. But in zone 4, green open space existing cannot absorb 100% carbon dioxide emissions and carbon monoxide.
Utilization of reject material in raw grinding mill unit as industrial wastewater adsorbent
Authors: Husain H , Abdullah N O 
Published: February 2020

Abstract
The technology of handling industrial wastewater adopted by the industry is quite expensive with high costs in its operation, so that wastewater treatment technology that is cheap and easy to adopt and under strict environmental regulations is an important thing to consider. Innovative adsorption-based technology developed using industrial waste and agricultural waste offers an easy and economical solution for polluted environments. Raw grinding mill as one part of the cement industry production equipment serves to grind or soften cement raw material, some waste material which is known as reject material during the process and has not been used optimally. This research aims to determine the effect of reject material as an adsorbent on decreasing metal content and pH of industrial wastewater. The method used in processing, namely the wastewater sample, is put into a reservoir (tub I), then flowed continuously into tub II, which is filled with reject material as an adsorbent. The sampling technique was carried out after the wastewater flowed from tub II and then collected in a storage container and ready to be analyzed for heavy metal content and pH of wastewater in the laboratory. The results of the research showed that reject material of Raw Grinding Mill as an adsorbent of PT. Bosowa cement can reduce metal material PO4 = 94.63%, NO3 = 81.82%, NH3 = 22.41%, As = 76.67%, Zn = 73.23%, Ni = 100%, Ag = 60%.