iosr-JMCE   Volume-17 ~ Issue-6 ~ Nov. – Dec. 2020

Abstract: This paper presents static structural behaviors of cable-stayed bridges with two new cable systems: the overlapping stay system and the hybrid cable system. The static analysis is carried out for four cable-stayed bridge models with three different patterns of live load consisting of the train and vehicle loads. The live load distributed in the mid-span gives larger deflection for all four models. The overlapping stay system and the hybrid cable system can significantly reduce the displacements of the girder and bending moment of the towers due to live loads. The deflection of the girder with the overlapping stay system due to the train loads decreases by 9.5% and the hybrid cable system decreases by 10% in comparison with the conventional cable system. The deflection of the new cable systems are within the allowable value specified for the Japanese bullet train, confirming that serviceability limit is satisfied.

[1]. Okamoto Y. and Nakamura S.: Static and Seismic Studies on Steel/Concrete Hybrid Towers for Multi-span Cable-stayed Bridges, Journal of Constructional Steel Research, Elsevier, Vol.67, No.2, 203-210, 2011.
[2]. Miyachi K. and Nakamura S.: Ultimate Strength and Collapse Process of Cable-Stayed Arch Bridges, Journal of Bridge Structures, Vol.10, No.2, 63-75, 2014.
[3]. Okamoto Y., Nakamura S., Tanaka H. and Moriya Y.: Study on steel box girder bridges partly stiffened by CFT arch ribs, Journal of Constructional Steel Research, Elsevier, Vol.70, 28- 35, 2012.
[4]. Hussain N., Carter M., Kite S. and Minto B.: Forth replacement crossing – Concept design, IABSE Symposium in London, 2011.
[5]. Kite S., Carter M, Hooton M. and Minto B.: Forth Replacement Crossing - Design Criteria, IABSE Symposium in London, 2011..

Abstract: Urbanization and speedy growth of population results on the increasing demand for construction of building. Resource, energy, technology and manpower play a key role for the challenges of this demand. Sustainable development is a great challenge to overcome these issues. Environment-friendly technology can be reached by cost effectiveness and improving the life style of the inhabitant. So, a new approach should be introduced with in affordable cost in construction industry. Generally, the construction part plays two essential terms, such as structural and non-structural element. Mostly non-structural elements depend on the brick and it's by product. Beyond the significance of brick production, most of kilns are outdated and highly contaminating. This leads to harmful impact on environment and to the human health. Now it is appropriate time to replace the brick as per use as non-structural element which.......

Key Word: Eco-friendly, Sustainability, Environment, Brick, Ferrocement

[1]. BSTI (Bangladesh Standards and Testing Institute). Standards for Common Building Clay Bricks. BSD 2008:2002 (2nd Revision). BSTI.
[2]. Dhaka.
[3]. BUET (Bangladesh University of Engineering and Technology). 2007. Small study on air quality of impacts of the North Dhaka brickfield
[4]. cluster by modeling of emissions and suggestions for mitigation measure including financing models. Prepared by the Chemical Engineering Department.
[5]. CBTIA (China Brick and Tile Industry Association). 2005. Development Plan of the Brick and Tile Industry for the 11th FYP, Brick and Tile World, Issue 3.

Abstract: The current paper presents an experimental investigation to study the performance of simply supported reinforced concrete beams with ground blast furnace steel slag (GBFS) as coarse and fine aggregates. Two different concrete mixes were prepared to evaluate the mechanical characteristics of the modified concrete. One mix was contained GBFS as fine and coarse aggregate instead of natural aggregate, the other mix was contained natural aggregate by using crushed stone for coarse aggregate and sand for fine aggregate. The results showed that the compressive strength , splitting tensile strength and flexural strength were enhanced by 119.20%, 120.0% and 123.70% respectively in the case of using GBFS in the concrete mix. Nine beams were cast and tested to study the performance of the reinforced concrete beams with GBFS......

Key Word: Reinforced concrete beams, Ground Blast furnace steel slag , Strengthening, flexural behavior and Cement

[1]. Devi, S., Shahrukh, Meena, S., Joshi, S., Sharma, S.K., 2016. Utilization of foundry slag as a partial replacement of cement and sand. SSRG Int. J. Civ. Eng. (SSRG-IJCE) 3 (5). IJCE, volume 3, issue5.
[2]. R Karolina, A L A Putra , 2018 "The effect of steel slag as a coarse aggregate and Sinabung volcanic ash a filler on high strength concrete", Materials Science and Engineering 309 (2018) 012009 doi:10.1088/1757-899X/309/1/012009
[3]. Doia Arribasa, Amaia Santamaríab, Estela Ruizc, Vanesa Ortega-Lópezd, Juan M. Manso, 2015 "Electric arc furnace slag and its use in hydraulic concrete", Construction and Building Materials 90 (2015) 68-79.
[4]. Takayuki Miyamoto, Koichi Torii, Kenichi Akahane and Sachiko Hayashiguci,2015" Production and Use of Blast Furnace Slag Aggregate for Concrete" Nippon Steel & Sumitomo Metal Technical Report No. 109 JULY 2015
[5]. D.Suresh, and K. Nagaraju, 2015 "Ground Granulated Blast Slag (GGBS) In Concrete –A Review" IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 4 Ver. VI (Jul. -Aug. 2015), PP 76-82.

Abstract: Fluid flows via path curvature pipe can increase the efficiency of transfer of heat. Spiral coils are frequently used for the heat exchangers, electronic cooling, chemical reactors, food industry, health industry and so on. They are compact & their heat transfer rate is much higher as especially in comparison to straight tubes of the very same length.. It is a well-known fact that heat transfer in Spiral coil is higher than in straight pipe. This study summarizes and discusses critically the studies published in the literature about the characteristics of pressure drop & flow in spirally coiled tubes. Consequently, the aim of this analysis is to provide educational and industrial researchers with a realistic overview of the related correlations and supporting Method for measuring the characteristic of pressure drop & flow in Spiral pipe tubes

Key Word: Curved Tubes; Spirally Coiled tube; Curvature ratio; Newtonian fluids

[1]. J.H. Grindley, A.H. Gibson, On the frictional resistance to the flow of air through a pipe, Proc. R. Soc. An 80 (1908) 114-139.
[2]. V. Kubair, N.R. Kuloor, Flow of Newtonian fluids in Archimedean spiral tube coils: Correlation of the laminar, transition and turbulent flows, Indian J. Technol. 4 (1966) 3-8.
[3]. Anthony Bowman, Hyunjae Park, 2004, CFD study on laminar flow pressure drop and heat transfer characteristics in Toroidal and spiral coil systems, ASME International Mechanical Engineering Congress and Exposition California USA, 1-9.
[4]. W.R. Dean, Note on the motion of fluid in a curved pipe, Philos, Mag. Ser.4 (20) (1927) 208-223.
[5]. W.R. Dean, The stream-line motion of fluid in a curved pipe, Philos, Mag. Ser.5 (1928) 673-695.

Abstract: Development of 33 KVA porcelain insulator using Nsu clay was carried out to determine the suitability of local raw materials for production of standard porcelain insulators. The clay, with other materials after characterizations were used to compose seven samples (A to G) and shaped using jigger jollying machine. The physical properties investigated after sintering at 1400 oC shows that samples A to G had percentage linear shrinkage ranging from 3.9 % to 8.9 % with cold crushing strength ranging from 20.13 MPa to 29.18 MPa respectively. The investigation revealed that samples A to G as stated above had percentage water absorption ranging from 0.71 % to 0.41 % with corresponding values of 0.023 % to 0 % after glazing respectively. The apparent porosity indicated that samples.....

Key Word: Porcelain, Nsu clay, Insulator, Flash over Voltage

[1]. . Kikuhi, T., Nishimura, S., Nagao M., KIzumi M., Kubota Y. and Sakata M. Survey on the Use of Non-Ceramic Composite Insulators, IEEE Transactions on Dielectric and electrical insulation., 1999, 6, 548- 556.
[2]. Hall, J. F. History and Bibilography of Polymeric Insulators," IEEE Transactions on Power Delivery., 1993, 8, 376-385.
[3]. Reuben H. Outdoor HV Composite Polymeric Insulators," IEEE Transactions on Dielectric and electrical insulation, 1999, 6, 557-585.
[4]. Kunikazu, I. and Kenzo K. Applications of Polymeric Outdoor Insulation in Japan," IEEE Transactions on Dielectric and electrical insulation, 1999, 6, 595-604.
[5]. Idenyi, N. E. and Nwajagu, C. O. Non-metallic Material Technology, Enugu Ohcon Publication. 2013, 1-10

Abstract: With the growing demand for water reserves due to the implantation of new allotments and horizontal condominiums, the metallic tanks started to have internal physical divisions (vertical cells) so that the upper cell has the height of the bottom suspended at a height that guarantees the necessary pressure gauge for meet the NBR 12.218-1994 standard. This standard prescribes that the water distribution network has a minimum dynamic pressure of 100 kPa. Due to the lack of specific Brazilian technical standards for storing water in a metallic tank, the AWWA D100-05 has been used as a sizing parameter for metallic reservoirs with several vertical water storage cells, or only partially, mainly due to efforts axials on the sides (shells) to determine permissible stresses in buckling (FL). This article addresses choosing the most suitable type of vertical metal tank suspended bottom and compares the results of five different types of bottoms, sized according to the AWWA D100-05 standard. Within the typology of the five analyzed bottoms, the most economical bottom was the segmented spherical one

Key Word: Metallic tank, AWWA D100 standard, Elevated bottoms, Autodesk Simulation Mechanical 2008

[1]. AWWA – American Water Works Association, AWWA D100-05, Welded Steel Tanks for Water Storage. Edição atualizada. Denver, Colorado. 2005.
[2]. PEREIRA, P. M. F. Análise dos conjuntos habitacionais do programa Minha Casa, Minha Vida na cidade de Monte Alegre de Minas- MG. Dissertação de mestrado. Faculdade de Geografia. Universidade Federal de Uberlândia, 2017.
[3]. ABNT – Associação Brasileira de Normas Técnicas, NBR 12.218, Projeto de rede de distribuição de água para abastecimento público. Rio de Janeiro, 1994.
[4]. TREES, M. J. Design of elevated steel tanks. Thesis. University of Illinois, Urbana-Champaign, 1911.
[5]. VISAL, B. & SIBIN, B. Design and analysis of storage tanks. International Journal of Innovative Research in Science, Engineering and Technology. Vol. 6, Issue 5. 2017.