Findings-As a result, the BIM-based

Findings-As a result, the BIM-based approach shows higher
QTO accuracy (95%) than the manual-based approach (less
than 89%). BIM also has other advantages such as allowing
partial calculation, re-calculation, and design changes during
production stage. Moreover, because design changes are
calculated automatically by the BIM operation, drawing
omissions and cost estimation errors can be reduced
significantly