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918 articles for “top-down”
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Liability of Photovoltaic-Thermoelectric Hybrid Devices
Abstract: Photovoltaic (PV) modules suffer from the exalted temperature in case of outdoor performance. The losses are about more than 25% depending on the arrangement of the materials on the top. If thermoelectric (TE) converter is integrated with the PV modules, then we can form PV-TE hybrid module where TE converter can produce additional electricity due to the difference of the temperature. Nowadays, it is possible to enhance the efficiency by …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 1, 2017 · pp. 12–17 Read article
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Solutions to Overcome SQ Limits for Modelling Efficient Solar Cell and Introduction to Novel QD-MJSC Design
Abstract: AbstractHarnessing the solar power with maximum energy conversion efficiency can fulfill every electrical demand of the world. Depending on the designing of models, the commercial solar cell is being tested. To harness the entire energy on optimum cost, the material is selected in such a way that the overall outcome become beneficiary. In recent market available solar cell, there are still more criteria to be taken care of to improve …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 3, 2019 · pp. 37–46 Read article
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Development and Performance Assessment of a Prototype Zeer-Pot Refrigerator
Abstract: AbstractThe energy deficient rural areas in several parts of the world are not yet fully electrified are devoid of facilities like refrigeration and thereby limiting the applicability of refrigeration and allied processes. Development of a refrigerator or refrigeration method that needs little to no electricity has been an interesting topic of concern for researchers all over the world and the various investigations among them has reported the effect of evaporative …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 2, 2020 · pp. 41–45 Read article
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Different Types of Control Grid in Solar System
Abstract: This paper gives a concise prologue to photovoltaic (PV) systems, with an emphasis on those that interface with the current electrical grid. The solar modules, intersection box, on-grid inverter, principal board, AC separate, net meter, and electrical grid are only a portion of the parts examined. It represents the qualities of the numerous assortments of solar cells utilized in PV transformation, including monocrystalline, polycrystalline, and undefined silicon cells, and their …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 14, Issue 2, 2024 · pp. 1–7 Read article
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Factors Affecting Building Construction Tendering Costs: Studies of Saudi Arabia
Abstract: AbstractThis study is conducted to assess and rank factors affecting cost at the pre-tender stage for building construction projects in Saudi Arabia. 43 factors affecting opponent cost estimate were identified through literature review and discussion with some construction specialists. The factors were tabulated in a questionnaire form and a questionnaire survey including 32 consultants and 21 owners was performed. The study finds a strong agreement between owners and consultants in …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 1, 2018 · pp. 26–33 Read article
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STUDY OF GEO-POLYMER CONCRETE MADE BY USING NATURAL RIVER SAND WITH DIFFERENT POZZOLANIC MATERIAL – A REVIEW
Abstract: Geo-polymer is a new research topic in the construction industry in which cement is fully replaced by pozzolanic materials like fly ash, Ground Granular blast furnace slag, Rice husk ash, silica fume and alccofine etc. activated by highly alkaline solutions to act as a binder in the concrete mix. The result of previous experimental work reveals that normal concrete manufactured with natural river sand replaced up to optimum percentage by …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 3, 2018 · pp. 42–50 Read article
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Adoption of Building Information Modeling (BIM) in the Philippines’ AEC Industry: Prospects, Issues, and Challenges
Abstract: Building Information Modeling (BIM) is a modern approach and process used in the architecture, engineering, and construction (AE&C) industry that enhances planning, design, and construction of facilities. In fact, BIM is considered one of the most promising advancements in the AE&C industry. Its usage in other countries has become prevalent and the benefits are remarkable in terms of reduction of time, cost, and material wastage. The Philippines, on the other …
Published in Journal of Construction Engineering, Technology & Management · Vol. 9, Issue 2, 2019 · pp. 8–20 Read article
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Effect of Construction Load on RC Floor Slab
Abstract: In reinforced concrete building structures, floors are added from bottom to top sequentially.The load due to construction of new floor is transferred to the lower floor slab through shoring. Different construction practices are adopted at work sites for the transfer of this load. The effect of construction practices was reviewed. The threshold value for bending moment under construction load is marked to provide the caution against the possible failure of …
Published in Journal of Construction Engineering, Technology & Management · Vol. 7, Issue 2, 2017 · pp. 41–49 Read article
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Building Material Selection Ideology for Sustainability in India
Abstract: Buildings are largest share of consumer of energy and also one of the major producers of greenhouse gases. Buildings are a topic of discussion on an international platform. Sustainability is one of major demands. It may be true that in the current phase, it is just a demand of academicians and people concerned for sustainable development but sooner or later every client will be demanding for sustainable buildings. It will …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 3, 2016 · pp. 43–53 Read article
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Monitoring and Forecasting in Construction Projects Using Time Buffer
Abstract: The key to project management is effective performance monitoring and forecasting. The existing methods using input- output cash flow, earned value, etc. do not differentiate between work done on the critical path and work done on non-critical paths. Such methods mask the real situation and mislead the project team because progress on one path often compensate for the delay in other. The paper proposes a more effective method to facilitate …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 9–16 Read article
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Finite Element Modelling of Rollcrete Concrete Pavement
Abstract: The present study carried out to find the characteristic compressive Strength of Rollcrete (RCC) by using accelerated curing method so as to satisfy the required target mean strength in one day and comparing the same results with the normal curing strength at 28 days.Further, the study is undertaken to design of rollcrete pavements using finite element approach and evaluated the benefit of rollcrete pavement. Considering rutting as a failure criteria, …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 62–66 Read article
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Maintenance Management in Iraqi Government Buildings
Abstract: Due to the fact that the buildings in general and government buildings in particular, is considered as a national real estate wealth of high value, and to maintain these building, must carry out maintenance work to them. And the reality of the maintenance of government buildings in Iraq is not going according to the real system of management and lack of specialized cadres to carry out the tasks required in …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 67–74 Read article
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Current Trends and Modernization of Construction Industry in Pakistan
Abstract: The construction industry is the second largest industry of the country after agriculture. However, contrary to its share in local economic market, the development in this sector is not at par with market demands. Though the use of various new technologies and deployment of project management strategies has made it possible to undertake projects of mega scale yet the industry direly needs a developmental strategy that could maintain its competitiveness …
Published in Journal of Construction Engineering, Technology & Management · Vol. 6, Issue 2, 2016 · pp. 116–129 Read article
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Time Overrun Causes in Public Construction Projects in Saudi Arabia: Contractors’ View
Abstract: The time schedule in construction projects is one of the prime measures for project success. However, the construction industry worldwide is full of projects that were completed with significant time overrun. This problem is critical and has negative effects on construction parties in terms of growth in adversarial relationships, mistrust, litigation, arbitration and cash flow problems. This study aims at identifying the time overrun causes in public construction projects in …
Published in Journal of Construction Engineering, Technology & Management · Vol. 3, Issue 3, 2013 · pp. 67–75 Read article
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Behaviour of Staggered Opening Shear wall in Tall buildings
Abstract: Now a days we are seeing a rapidly increasing the cost of land not only in India even all over the world and also we need to preserve our important agricultural productive land too. All contributed towards both residential and commercial structures growth in vertical direction that is high rise structure. Behavior of these high rise structures especially with shear walls during hazards like earthquake, wind and lateral loads due …
Published in Journal of Construction Engineering, Technology & Management · Vol. 11, Issue 1, 2021 · pp. 35–44 Read article
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Analysis of Proposed Diagrid Geometry Using Golden Ratio in Non-linear Regime of Material
Abstract: Lateral loads are critical in the design of high-rise structures. The buildings need to have high stiffness and must be able to resist lateral deformations and torsional rotations without having discomfort to the user. Diagrid structural system is one of the systems used in resisting lateral forces. In this study, diagrid geometry is generated using the ‘Golden Ratio’ concept and used to model 40, 50, and 60 story structures. Two …
Published in Journal of Construction Engineering, Technology & Management · Vol. 11, Issue 2, 2021 · pp. 1–11 Read article
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A Review on Sustainable Building with Recycled Concrete
Abstract: There are various advantages of using high strength concrete as it not only reduces the structural dimension but also help in gaining cost cutting and more profits in high rise structure with reduction of dead load, and self-weight of the structure, also help in reducing the formwork area and cost saving due to smaller foundations beds. Beside this rise in construction industry with the help of concrete, there are huge …
Published in Journal of Construction Engineering, Technology & Management · Vol. 12, Issue 1, 2022 · pp. 7–11 Read article
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Review on Impact of Factor Affecting Cost Estimation Corresponding with Stakeholder’s Prospective View
Abstract: For project planning and finance, it is essential to make very accurate cost estimates for construction projects early on in the project development process. Before purchasing a site and committing to build, construction clients need timely and accurate cost advice in order to make an informed decision about whether to proceed with the project or not. The accuracy of a cost estimate, however, could be impacted by numerous variables. The …
Published in Journal of Construction Engineering, Technology & Management · Vol. 12, Issue 3, 2022 · pp. 37–43 Read article
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CONSTRUCTION SAFETY ANALYSIS OF INDIA: EXPLORING THE FEASIBILITY OF IMPLEMENTING INTERNET OF THINGS AS A PLATFORM TO PROTECT WORKER SAFETY & HEALTH
Abstract: Construction safety has become a major problem in India. Obtaining a proper solution is becoming a contemporary issue. In spite of spending money towards procuring personal protective equipment and incorporating other traditional safety measures, worker safety is not ensured in construction projects. According to an international report and national news and magazine reports, almost 48000 workers are subject to die due to fatal accidents taking place in India in which …
Published in Journal of Construction Engineering, Technology & Management · Vol. 13, Issue 1, 2023 · pp. 16–27 Read article
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A Comparative Investigation of the Speed Regulation Capabilities of Electric Drives for Domestic and Agricultural Applications
Abstract: Performance enhancement of electric drives is an area of major concern in present day applications. In domestic sector and agricultural applications, conventional type of motors like Single Phase Induction Motors (SPIM) are still used, the dynamic performance and efficiency of which are poor. Replacing such motors with highly efficient Switched Reluctance Motor (SRM) will improve the performance as well as conserve the energy. This paper mainly focuses on the speed …
Published in Journal of Control & Instrumentation · Vol. 9, Issue 1, 2018 · pp. 1–9 Read article