| Title |
Comparative Analysis between RSMeans and Standard Estimating System for Selective Finish Demolition in Remodeling Projects |
| Authors |
Kim, Kyung-Hwan ; Baik, Hwa-Sook |
| DOI |
http://dx.doi.org/10.5659/JAIK_SC.2015.31.3.73 |
| Keywords |
Remodeling ; Standard Estimating System ; Demolition ; Productivity |
| Abstract |
The demand for building remodeling is increasing because of its reduced waste, cost, and duration compared to reconstruction. As the predecessor of new construction in a remodeling project, selective demolition significantly affects the cost and duration of the overall project. However, the standard estimating system (SES) in Korea provides only limited items for selective demolition in remodeling projects. Hence, for many items that are not on the SES list, one has to adopt a similar item from the SES or employ another rule that may not be standardized. Focusing on ceilings, flooring, and walls, this study analyzes problems in the similar-item application for those missing items through comparison among SES, RSMeans, and real project data. It has been found that: the numbers of items in SES are far lower than those of RSMeans and real project data: the similar-item application has serious shortages because of production rate variance: and the production rates in SES are lower than those of RSMeans. In addition, arranging laborers in a team for a job is difficult for some works because of the laborers-per-unit work system that SES applies. In order to overcome these problems, the number of work items should be expanded with more practical production rates, and a new standard structure, such as daily output per team, should be introduced. |