Abstract
Prefabricated construction has gained increasing popularity to meet the needs of rapid city development in recent years. Installation quality check is a critical task in prefabricated construction, and currently mostly still carried out manually, which is slow and ineffective. To provide an efficient and practical quality check method to replace the current manual method, this paper elaborates on an approach for checking prefabricated wall panels using laser scanning. The approach is validated in an actual case study. A common laser scanner BLK 360 is adopted to collect onsite 3D scenes after panel installation. The point clouds collected are co-roistered, classified, and segmented. Geometric parameters such as angles and distances allow for determining whether the installation meets the quality requirement. The outcome is compared with the quality check results using the conventional manual method. The results show that the panels, which need rectification, are correctly identified by the proposed approach. The major contribution of this study is determining the set of segmentation parameters to be adopted in similar quality check-up procedures. A practical and efficient quality check process is also proposed and can be readily implemented for certain prefabricated elements in many construction cases.
Highlights
In recent years, prefabricated construction is recognized as a more efficient construction method, and has a wide range of benefits in improving the industry’s productivity, sustainability, quality, and health and safety [1,2,3,4]
The validation results demonstrated that the proposed laser scanning method could correctly identify the prefabricated wall panels (PWPs) need to be rectified
Installation quality check is a critical task in prefabricated construction, and currently mostly is still carried out by the manual method, which is slow and ineffective
Summary
In recent years, prefabricated construction is recognized as a more efficient construction method, and has a wide range of benefits in improving the industry’s productivity, sustainability, quality, and health and safety [1,2,3,4]. In contrast to conventional construction, there are additional lifting and installation processes for prefabricated elements, which have direct impacts on the overall project quality [5,6]. One of the most common and important procedures is to ensure that prefabricated wall panels (PWPs) are accurately installed. The conventional installation and quality check procedures of PWPs are shown in Figure 1; there are six major steps, including lifting to position, installation, checking horizontal alignment and verticality during installation, and re-checking horizontal alignment and verticality after installation. The selected selected prefabricated prefabricatedproject projectis is located in Pudong district, Shanghai, China. Located in Pudong district, The of this project is more 14with ha with. The building is a work-in-progress building and is and selected for thefor case study this in this research
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
