| Title |
Estimating Recyclability Based on Relocation Timing in Steel Modular School Facilities |
| Authors |
이세연(Lee, Se-Yeon) ; 장활제(Jang, Hwal-Je) ; 안용한(Ahn, Yong-Han) ; 박성준(Park, Sung-Jun) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.12.359 |
| Keywords |
Modular School; Relocatable Modular; Recycling Rate; Economic Analysis |
| Abstract |
This study examines the long-term economic feasibility of steel modular school facilities under different relocation strategies, using life cycle
cost (LCC) analysis that excludes end-of-life costs. A 32-classroom expansion case at an elementary school in Daejeon serves as the basis for
evaluation from two stakeholder perspectives: the school operator and the modular unit owner. Ten scenarios were assessed. Results show that
relocatable modular models (RM) generally outperform permanent reinforced concrete models (PM), with RM1-1 and RM2-3 achieving the
lowest LCCs by aligning relocation timing with major repair cycles. Sensitivity analysis, covering discount rates from 0 percent to 7.5
percent, confirmed the economic advantage of RM models, with RM1-1 remaining the top choice even at the standard public evaluation rate
of 4.5 percent. In contrast, PM models ranked lower due to repeated construction costs. These findings suggest that flexible relocation
strategies aligned with demographic shifts improve long-term cost efficiency and help retain asset value. RM models, especially when timed
strategically, offer a strong alternative to traditional school construction in dynamic educational settings. |