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Lifting and Rigging Study for Precast Volumetric Modular Construction in Nunavut
In this study, a preliminary design of a lifting and rigging system for a modular construction company, Nunafab/Illu was conducted. The company is in the process of building affordable, high-quality, durable and energy-efficient total precast concrete modular houses in Nunavut. The Off-site Construction Research Centre (OCRC) at the University of New Brunswick evaluated lifting and rigging options for the modules and recommended ways to improve the lifting and rigging process. Therefore, first, the weight and centre of gravity (CoG) of the different modules were calculated. While the heaviest module was considered for the design, the CoG location of every module was considered in the calculation of lifting sling lengths. The length and angle of each sling were calculated in such a way to facilitate lifting from the CoG and optimize the load applied on each sling. Then the possibility of different lifting scenarios was evaluated considering the capacities and limitations of the concrete and lifting accessories. The most limiting condition was the strength of concrete and the availably of lifting inserts. Finally, suggestions were made to the company to be able to use more efficient lifting and rigging methods. The first suggestion was reducing the weight of the module in order to use fewer lifting inserts. That will reduce the number of levels of spreader bars, improves the lifting tree assembly process and time, and reduces divergence from the CoG. Second suggestion was designing and manufacturing of a customized lifting frame instead of using a lifting tree.
Lifting and Rigging Study for Precast Volumetric Modular Construction in Nunavut
In this study, a preliminary design of a lifting and rigging system for a modular construction company, Nunafab/Illu was conducted. The company is in the process of building affordable, high-quality, durable and energy-efficient total precast concrete modular houses in Nunavut. The Off-site Construction Research Centre (OCRC) at the University of New Brunswick evaluated lifting and rigging options for the modules and recommended ways to improve the lifting and rigging process. Therefore, first, the weight and centre of gravity (CoG) of the different modules were calculated. While the heaviest module was considered for the design, the CoG location of every module was considered in the calculation of lifting sling lengths. The length and angle of each sling were calculated in such a way to facilitate lifting from the CoG and optimize the load applied on each sling. Then the possibility of different lifting scenarios was evaluated considering the capacities and limitations of the concrete and lifting accessories. The most limiting condition was the strength of concrete and the availably of lifting inserts. Finally, suggestions were made to the company to be able to use more efficient lifting and rigging methods. The first suggestion was reducing the weight of the module in order to use fewer lifting inserts. That will reduce the number of levels of spreader bars, improves the lifting tree assembly process and time, and reduces divergence from the CoG. Second suggestion was designing and manufacturing of a customized lifting frame instead of using a lifting tree.
Lifting and Rigging Study for Precast Volumetric Modular Construction in Nunavut
Lecture Notes in Civil Engineering
Gupta, Rishi (editor) / Sun, Min (editor) / Brzev, Svetlana (editor) / Alam, M. Shahria (editor) / Ng, Kelvin Tsun Wai (editor) / Li, Jianbing (editor) / El Damatty, Ashraf (editor) / Lim, Clark (editor) / Rizaee, Samira (author) / Lloyd, Alan (author)
Canadian Society of Civil Engineering Annual Conference ; 2022 ; Whistler, BC, BC, Canada
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2022 ; Chapter: 29 ; 385-396
2024-01-13
12 pages
Article/Chapter (Book)
Electronic Resource
English
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