Quality Assessment
Scanning technology (3D laser scanner technique) measures the dimension of a precast concrete panel using extraction algorithms to measure boundary points with a compensation model to increase measurement accuracy (Kim et al., 2013). 3D laser scanning converts CAD models into BIM, which identifies scanned objects by ensuring precision for rebar mapping before actual drilling as well as rebar detailing for installing rebar cages (Hajian & Brandow, 2012). Before shipping precast concrete elements, dimensional quality assurance (DQA) is carried out to ensure that there are no dimensional defects using a scanner in an automated process that saves time and labor input ( ...
