iosr-JMCE   Volume-15 ~ Issue-6 ~ Nov-Dec 2018

Abstract: A high rate project abandonment due to cost over-run has really defaced the most cities. Among the success parameters of construction project namely: cost, quality and time, the project cost was the most significant among the professionals in the construction industry. The sample size of 50 was used for the study. The field data were subjected to statistical analysis using the multiple regression analysis. Among the five independent variables only construction project quality control and the construction methods/techniques indicated significant statistical relationship to the cost control methods adopted for construction project. While the others project design control, socio-economic factors, laws and regulations governing construction projects showed insignificant relationship to the control of the cost of construction projects.

Keywords -Cost Control, Project Design, Cost Over-run, Project Quality, Construction Regulations

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Abstract: This study aims at investigating the performance of a 50 MW capacity Diesel engine power plant run mostly byHFO (heavy fuel oil). The plant consists of six identical Diesel engines of 20 cylinders in each, arranged in V-shape. The variations in capacity factor, plant availability, plant reliability, BSFC (Break Specific Fuel Consumption), Generator efficiency have been analysed in different periods of a year. During January to March, BSFC has a minimum value of 217.72 g/kWh& it reaches at the peak (221.92 g/kWh) between July & September. During April to June, both plant availability (96.67%) & capacity factor (25.64%) have their highest magnitudes. Generator efficiency.........

Key Words: Availability,BSFC,Capacity factor, Exergy, Generator efficiency, Reliability, Turbocharger Nomenclature

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Abstract: There are several factors which have made it compulsory for our nation and the world to go for highrise structures and the skyscrapers. One of such factors is rapidly increment in population in urban areas. But it is a big challenge to build a highrise structure as number of aspects to be considered in it are more as compared to lowrise structures such as lateral stability. To deal with the lateral (wind and earthquake) froces acting on a structure, several lateral force resisting systems have been introduced such as the Braced tube, Shear wall frames, Diagrid, Space truss and Outrigger structural system etc. In this paper, the most effective outrigger structural system i.e. conventional outrigger-belt truss is compared with Virtual outrigger System. Also, Concrete and steel are used to carry..........

Keywords -Belt truss, Convectional, Virtual, Response Spectrum, Time History, Zone

[1]. Nair R. S., Belt trusses and basements as virtual outriggers for tall buildings, Engineering Journal AISC, Fourth Quarter, 140-146, 1998
[2]. Andrew J. Horton, "Virtual Outriggers in Tall Buildings"
[3]. Suresh, B. Bhanupriya, A. Ramakrishnaiah, Influence of Concrete and Steel outrigger and belt truss in high rise Moment Resisting Frames, International Research Journal of Engineering and Technology, Vol. 04, Issue 11, 2017
[4]. Abdul Karim Mulla, Srinivas B. N., A Study on Outrigger System in a Tall R.C Structure with Steel Bracing, International Journal of Engineering Research & Technology(IJERT), 2015
[5]. Syed Rizwan Nasir, Amaresh S. Patil, Lateral Stability Analysis of High Rise Building with the Effect of Outrigger and Belt Truss System, International Journal for Innovative Research in Science & Technology, Vol. 3, Issue: 03, August 2016

Abstract: In this paper, a kind of cable-locking device is proposed, which replaces the motor driving device of the former cable-driving manipulator, and makes the cable-driving manipulator become a passive manipulator which can be applied in limited space, has larger workspace and has larger load-carrying capacity. The device has the characteristics of compact structure, good adaptability and strong versatility. The Integral structure and each part of this device are introduced. As the key part of this device, the detail structure and working principle of the cable-locking unit are proposed in this paper. Mechanical calculation of the force amplificatory structure is proposed in this paper to ensure that sufficient locking force can be provided..

Keywords -cable-driven manipulator; cable-locking device; force Amplificatory structure; mechanical design

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Abstract: Heating, Ventilation, and Air Conditioning (HVAC) systems are critical for maintaining indoor air quality and thermal comfort in hospitals, industries, and commercial infrastructures. Over time, dust accumulation, microbial growth, and corrosion inside air ducts reduce airflow efficiency and increase health risks. Conventional cleaning methods are labor-intensive and often ineffective in confined duct environments. This paper presents the design, development, and experimental validation of a wireless air duct cleaning and inspection robot for rectangular HVAC ducts......

Keywords -HVAC, Duct Cleaning Robot, ESP8266, Indoor Air Quality, Wireless Control, Mechanical Brushing.

[1] Y. Wang, "Autonomous air duct cleaning robot system", Aug 2019 Texas A&M University, Texas.
[2] Wootae Jeong, "Force Control of duct cleaning Robot Brush Using Compliance Device ", 2012 University of Science and Technology, Daejeon, korea.
[3] Woo Jin Jang, "Control System Design of Duct Cleaning robot Capable of Overcoming L and T Shaped ducts", June 2020, Department of Mechanical design and robot engineering, Seoul National University of Science and Technology, Korea.
[4] Siamak Ghorbani Faal, M.Sc, "Design and Analysis of a Robotic Duct Cleaning", 2011 Sharif University of Technology, International Campus, Kish Island.
[5] Aditya Pratap Singh, "Duct Inspection and Cleaning Robot", Feb 2016 Mechanical and automation Department, Amity University, Uttar Pradesh.