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Journal of Civil and Environmental Engineering

ISSN: 2165-784X

Open Access

Current Issue

Volume 11, Issue 4 (2021)

    Research Article Pages: 1 - 9

    "EVALUATION OF THE PERFORMANCE OF HIGH-RESOLUTION SATELLITE BASED RAINFALL PRODUCTS FOR STREAM FLOW SIMULATION."

    Dawit Girma and Belete Berhanu

    Precipitation data is an intrinsic parameter of rainfall-runoff simulation, since it is strongly hooked into the accuracy of the spatial and temporal representation of the precipitation. In areas where rainfall gauging stations are scarce, additional data sources could also be needed. Satellite platforms have provided as a satisfactory alternative because of their global coverage. Although a good range of satellite -based estimations of precipitation is out there, not all the satellite products are suitable for all regions. In addition, in data-scarce areas where interpolation schemes are applied, it becomes difficult to get an accurate performance assessment; another comparison method is required as rainfal l-runoff models. Remotely-sensed estimates are to get realistic and reliable data to be accessed in water resource assessments. Therefore, there is a requirement to evaluate the accuracy of remote sensing techniques. Inter comparison between Satellite rainfall product and observed data were done using point to grid method selecting representative metrological stations. Inter comparison between Satellite rainfall product and observed data were done using point to grid method selecting representative metrological stations. TAMSAT shows the average value of R=0.87 and NS =0.764. Considering four categorical index POD, FAR, FB and HSS, the average value 0.71, 0.22, 0.92, and 0.66 respectively. For CHRIPS average R and NS are 0.88 and 0.755 respectively and categorical index POD, FAR, FB and HSS were 0.8,0.05, 0.85 and 0.81) respectively. The study model stream flow using both CHRIPS and TAMSAT rainfall products by using the SWAT model from 1983 to 2017. The model was calibrated from 1998 to 2003 and validated from 2004 to 2007 using SUFI-2 algorithm embodied in the SWAT-CUP. The Nash-Sutcliffe Efficiency (NSE), linear correlation coefficient (R) and BIAS indices were used to benchmark the model performance and shows very good result (having R2 and NS=0.71- 0.95 during calibration and 0.72-0.97 during validation.

    Editorial Pages: 1 - 1

    Earthquake Engineering

    Sushma Pullela

    The objective of earthquake engineering research is to advance the state of knowledge by conducting fundamental and applied research to assist decision-makers in reducing seismic risks. All entities and organisations influencing the planning and design/construction process, such as planning or regulatory agencies, owners, investors, and insurers, as well as the engineers who protect them through earthquake-resistant design are considered decision-makers.

    Editorial Pages: 1 - 1

    Engineering Informatics and Simulation

    Sushma Pullela

    Traditional obstacles to introducing and incorporating new technology in the design and construction industry have included the threat of lawsuits, government legislation, code limitations, and the high cost of insurance.Furthermore, unlike other manufacturing industries, the “one-off" development climate imposes a lack of mass production opportunity in the civil engineering market. As a result, there is a particular need for creativity in design procedures and construction techniques unique to this industry. Computers have the potential to be a major enabler of future progress in the design and construction industries.

    Editorial Pages: 1 - 1

    Structural Engineering

    Sushma Pullela

    Structural engineering is the branch of engineering that deals with a buildings or structure's structural integrity and power. Structural engineering is a structural engineering specialty that ensures buildings are secure, stable, and do not collapse when loaded. It is primarily concerned with the structure's study and design.A thorough examination of the wind speed that can bear structural loads, as well as the building's overall capacity and usefulness, offers additional details. The framework will be analysed using structural engineering principles to ensure that it complies with all of the relevant design codes.

    Editorial Pages: 1 - 1

    Editorial note : Sustainable Development

    Sushma Pullela

    Sustainable development is described as "meeting current needs without jeopardising future generations' ability to meet their own needs." Sustainable development refers to the use of a natural resource in a way that does not deplete or eradicate their value for future generations, such as coal, crude oil, and forests.

    Volume 11, Issue 5 (2021)

      Editorial Pages: 1 - 1

      Editorial on Hazardous-waste Management

      Sushma Pullela

      Hazardous-waste management refers to the collection, treatment, and disposal of waste that, if managed improperly, can endanger human health and safety as well as the environment. Hazardous wastes might be solids, liquids, sludge’s, or confined gases, and they are primarily produced by chemical, manufacturing, and other industrial processes. They can cause damage if they are not properly stored, transported, treated, or disposed of. Improper hazardous-waste storage or disposal regularly pollutes surface and groundwater resources, as well as being a cause of hazardous land pollution. People who live near old and abandoned trash disposal sites may be especially exposed.

      Editorial Pages: 1 - 1

      Editorial On Waste Treatment Using Plasma Arc Gasification

      Sushma Pullela

      Plasma arc gasification (PAG) is a waste-treatment method that uses a mix of electricity and high temperatures to convert municipal waste (garbage or trash) into useable by-products without the use of combustion (burning). Although plasma gasification is sometimes associated with incinerating or burning trash, it does not combust the garbage like incinerators do. Instead, it turns organic waste into a gas that retains all of its chemical and thermal energy, while inorganic waste is converted into slag, an inert vitrified glass. The method can reduce the amount of waste delivered to landfills while also producing electricity.

      Editorial Pages: 1 - 1

      Editorial On Soil Stabilization

      Sushma Pullela

      Soil stabilization is the process of altering engineering features of soil, such as strength parameters, in order to increase the soil's carrying capacity. It’s usually done when the subgrade soil isn't strong enough to support the structural loads. Soil stabilization improves the soil's shear strength while also lowering the permeability and compressibility of the mass. Soil compaction and drainage are the most basic soil stabilisation techniques. Soil stabilisation is critical for pavement construction. The shear strength capability of the pavement is constantly emphasised, as it must be sufficient to resist shear forces and prevent layer deflection due to fatigue. The soil stabilisation process can improve several soil properties.

      Editorial Pages: 1 - 1

      Editorial On Segregation Of Concrete

      Sushma Pullela

      Segregation of concrete is the separation of concrete ingredients so that their distribution in the concrete mix is not uniform. Over-vibration or compaction of concrete can also cause segregation, with cement paste rising to the top and particles sinking to the bottom. Concrete segregation has an impact on construction strength and durability. All concrete aggregates are equally coated with sand and cement paste in good concrete, resulting in a uniform mass.

      Editorial Pages: 1 - 1

      Editorial on Coastal Engineering

      Sushma Pullela

      Coastal engineering is a discipline of civil engineering that deals with the unique challenges of building near or on the coast, as well as the development of the coast itself. The hydrodynamic influence of waves, tides, storm surges, and tsunamis, as well as the (often) harsh environment of salt seawater, are common issues for coastal engineers, as are morph dynamic changes in the coastal topography, which are induced by both natural and man-made changes. Ocean and sea coasts, seas, marginal seas, estuaries, and large lakes are all regions of interest in coastal engineering. Coastal engineers are frequently involved in integrated coastal zone management, in addition to the design, construction, and maintenance of coastal infrastructure.

      Volume 11, Issue 3 (2021)

        Editorial Pages: 1 - 1

        Editorial on Geotechnical Engineering

        Sushma Pullela*

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        Editorial Pages: 1 - 1

        Micro Plastics In Wastewater Treatment Processes

        Sushma Pullela*

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        Editorial Pages: 1 - 1

        Computational Fluid Dynamics

        Sushma Pullela

        The method of mathematically modelling a physical phenomenon involving fluid flow and solving it numerically using analytical prowess is known as computational fluid dynamics (CFD). Aerodynamics plays an important part in the manufacturing phase when an architect is tasked with developing a new vehicle, such as a winning racing car for the coming season. Aerodynamic processes, on the other hand, are difficult to quantify during the concept stage. Physical checks on product samples are typically the only way for an inventor to refine his designs.

        Editorial Pages: 1 - 1

        Transportation Engineering

        Sushma Pullela

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        Volume 11, Issue 9 (2021)

          Case Report Pages: 1 - 5

          Maintenance Strategy and Decision Making Using Analytic Hierarchy Process (AHP) Method

          Tumsifu Mparanyi Justin*

          Maintenance has evolved and now plays a vital part in all types of industrial businesses, with an endless number of functions. Numerous sorts of multi-criteria challenges exist in industries or machines, which require a multi-criteria decision-making procedure to be addressed. Each form of maintenance method has its advantages, disadvantages, and benefits. The performance of a machine will be affected by the maintenance tactics utilized to keep it running. These machines needed to be well maintained because a malfunction could result in production losses. Due to issues such as safety, cost, productivity, and customer satisfaction, the maintenance approach utilized on each machine may differ from one to the next. AHP approach is used in this paper to model maintenance strategy and pick possible priorities of maintenance plan utilizing expert decision-making. After safety (38.2%), value added (20%), implementation cost (13.2%), performance measurement (5%), implementation capability (8.2%), support system integration (11.5%) and stock and material management (3.9%) are the next greatest priority considerations on implementation. AALRT system corrective maintenance is the least of our concerns as a result of this. For AALRT's introduction, Total Productive Maintenance (TPM) is advocated. AHP is a multi-criteria decision-making approach for selecting a maintenance plan, which is superior to the traditional experience-based method.

          Review Pages: 1 - 4

          Commercial Operation of 2.82 mw Pakpattan Hydropower Plant in Punjab Pakistan

          Mazhar Hussain Mahu*

          The 2.82 MW Pakpattan Hydropower Project (PHP) lies on Pakpattan Canal, achieved commercial operation on December 2016. Construction of the power plant began in May 28, 2012 and was completed at a cost of US $10.64 million in December 30, 2016. It is capable of generating enough electricity to power approximately 35,000 homes in Punjab Province and will offset more than 2500t of greenhouse gases annually. The hydroelectric facility successfully completed the 72-hour testing period required to achieve the Commercial Operation Date (COD). This paper highlights details of testing required to achieve commercial operation of the project.

          Research Article Pages: 1 - 5

          Performance Evaluation of Water Supply Distribution System the Case of Gudo Bahir, Bahir Dar, Ethiopia

          Yordanos Getnet* and Sisay Demeku

          This thesis focused on performance evaluation of water supply distribution system: case study Gudo Bahir, Bahir Dar, Ethiopia. The main objective of this study is to check the hydraulic performance of Gudo Bahir water distribution system by assessing losses of water, hydraulic performance of water distribution modeling and water supply and demand gap. Hydraulic network of the study area is simulated using Bentley Water GEMS V8i by using the data on the water distribution network of the area and master plan map of the town. The hydraulic simulation in the existing network system to satisfy the reliability of hydraulic parameters such as the pressure at a junction, head loss at each pipe material and flow of water were modeled. The water demand and supply of Gudo Bahir were not balanced. The daily water consumption of the area was 41 l/c/day used daily for different domestic activities with the billed water amount 1,619,591 m3/year was produced and 1, 087,704 m3/year was consumed and around 32.67% water was considered to be non-revenue (NRW). The level of connection in the study area was found 72.7%. The other observed big problem in Gudo Bahir area were intermittent water supply, pipe leakage, and one borehole creates a problem with the water distribution system line because it is directly joins the water distribution line without any disinfectants.

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Citations: 1255

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