| Title |
The Impacts of Reduced Labor Hours on the Construction Period and Cost of Tunnel Project |
| Authors |
Park, Taeil ; Kim, Kyunghoon ; Shin, Eun-Young |
| DOI |
http://dx.doi.org/10.6106/KJCEM.2019.20.2.037 |
| Keywords |
Construction Period ; Reduced Labor Hour ; Tunnel Project |
| Abstract |
After the new standards for labor hours has been released, various problems come up in construction field, such as income reduction of employees, extension of construction period and increased construction cost. Although it is expected that the impact of the new standard on the construction industry is more worse than other industries form the view of productivity, not much works have been done to identify those impacts. Thus, this research proposes the standard construction processes, excavation cycle, and unit construction period for NATM tunnel project based on 'Construction Standard Production Rates.'The study also investigated the impact of reduced labor hours on the management of work crews, construction periods and costs of tunnel projects. The results showed that under the 52 labor hour standard, the construction periods for the excavation work and whole project was increased by 20% and 8.9%, respectively, but the construction costs for the excavation work and whole project was decreased by 1.4% and 0.6%, respectively. |