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Design and Analysis of Various Homogeneous Interconnected Scaffold Structures for Trabecular Bone
Published in C. S. P. Rao, G. Amba Prasad Rao, N. Selvaraj, P. S. C. Bose, V. P. Chandramohan, Mechanical Engineering for Sustainable Development, 2019
V. Phanindra Bogu, M. N. Madhu, Y. Ravi Kumar, K. Asit Kumar
Tissue engineering aims to produce patient-specific biological substitutes to overcome the limitations of conventional clinical therapies. Fabrication of scaffolds using additive manufacturing techniques has more popular advantages like control over the pore size, establishment of homogeneous structures, and interconnected pores. Custom-made scaffolds could be developed by appropriate incorporation of a computational model and rapid prototyping (RP) technology. The microstructure of the scaffold determines the cell adhesion and tissue vascularization. Properties such as compressive strength (to ensure the mechanical stability of the scaffold structure) and permeability4,5 (to ensure the required transportation of nutrients, gases, and allow cell proliferation) of scaffolds are considered for a successful design of scaffolds.
Annotated Dictionary of Construction Safety and Health
Published in Charles D. Reese, James V. Edison, Annotated Dictionary of Construction Safety and Health, 2018
Charles D. Reese, James V. Edison
The employer must assure that each employee who performs work while on a scaffold is trained by a person qualified in the subject matter to recognize the hazards associated with the type of scaffold being used, and to understand the procedures to control or minimize those hazards. The training shall include the following areas, as applicable: The nature of any electrical hazards, fall hazards, and falling object hazards in the work area.The correct procedures for dealing with electrical hazards, and the procedures for erecting, maintaining, and disassembling the fall protection and falling object protection systems being used.The proper use of the scaffold, and the proper handling of materials on the scaffold.The maximum intended load, and the load-carrying capacities of the scaffolds used.Any other pertinent requirements or information.
The ephemeral robustness: Structure for temporary constructions
Published in Paulo J.S. Cruz, Structures and Architecture: Bridging the Gap and Crossing Borders, 2019
A. Bernabeu Larena, J. Gómez Mateo, J. Bernabeu Larena
A scaffold is a temporary structure used as an auxiliary system of construction to support materials and work crew. The main system is the tube and clamp or tube and coupler scaffold that is formed of steel tubes and standardized clamps. There are several classes of scaffold supporting different levels of weight (UN-EN 12810, 2005; UN-EN 12811, 2005). Joints between tubes and the support of the systems are the main aspects that must be analyzed carefully. The joint permits multiple angles between tubes and the supports must ensure the leveling of the set and the adaptations to different ground conditions.
Investigation of non-fatal occupational accidents and their causes in Turkish shipyards
Published in International Journal of Occupational Safety and Ergonomics, 2023
Fatih Burak Izci, Orhan Gökyay, Baris Barlas
A significant portion of the work accidents in shipyards occur during the work done on the ship. Occupational accidents are seen intensely during the works carried out on the ship due to both the structural features of the ships and the inconvenience of the working area. The steep stairs inside the ship, rough areas and closed narrow environments make it more difficult to take adequate occupational safety precautions. The shipyard production area is the place where assembling the block parts of the ship takes place. In these areas, carrying parts with a forklift or crane and working in a high place, sharp surfaces are the most vital cause of non-fatal occupational accidents. In the shipyard, other areas include the place for blasting, grinding and welding. The crane area is another dangerous place for accidents. An object falling and crashing accidents may occur during the carrying of loads. Crane operations must be carried out carefully under supervision. In the factory part of the shipyards, there are machines and workbenches such as computer numerical control (CNC), and a casting bench. During the use of the machines, accidents such as jamming and cutting accidents have been observed. Scaffolds are usually used in shipyards for reaching high places in painting and sandblasting operations. Also, small scaffolds can be attached to tanks, machine rooms, etc. Working on scaffolds can cause falling accidents. Lastly, ship tanks and shipyard offices were also included in the occupational accidents.
Identification of factors on the possibility of bamboo as a scaffolding and a formwork material in Ethiopia
Published in Cogent Engineering, 2022
Ermias A. Amede, Ezra K. Hailemariam, Leule M. Hailemariam, Denamo A. Nuramo
A scaffold is a temporary structure used to support people, materials, and systems under construction and maintenance. It is indispensable for different processes in a building project (R. Wong, 2015). It presents an essential part in construction especially building operations at height. It is used in new construction, alteration, routine maintenance, renovation, painting, repairing, and removal activities. Scaffolding offers a safer and more comfortable work arrangement than leaning over edges, stretching overhead, and working from ladders. Scaffolding provides employees with secure access to work locations, levels, stable working platforms, and temporary storage for tools and materials to perform immediate tasks (United States Department of Labor, 2016).
Risk assessment of probable human errors in the scaffold erection and dismantling procedure: a fuzzy approach
Published in International Journal of Occupational Safety and Ergonomics, 2022
Sepideh Abbaszadeh, Mehdi Jahangiri, Maryam Abbasi, Sean Banaee, Payam Farhadi
Among temporary structures, scaffolds are the most common ones used in the construction industry. A scaffold is a temporary structure mainly used to support workers, materials and equipment to provide access to difficult positions at higher levels while constructing or repairing buildings and other constructs [7,8]. About 2.3 million construction workers (65% of the construction industry) work on different types of scaffolds. Meanwhile, scaffolding violations still rank second in the Occupational Safety and Health Administration (OSHA) top 10 most frequently cited violations [9].