This study is objected to investigate the repairing method and the modification period of rafters via the transformation traces left in the superciliums, where repair process takes places frequently. This is the basic research of analyzing the architectural features of Deokkeori, one of the additional-rafter methods. Deokkeori method can be described as using Deokdori in the top section of Hayeon, and placement of Sangyeon above it. This method was started to be used since middle of the Joseon dynasty period(middle 18th Century) and mainly used at 19th Century to resist the transformation caused by repairing. It had been gradually developed from non-application stage to application stage including additional usage of complement.

Abstract 
1. 서론 
2. 이형적 배치방식의 등장 
3. 덧걸이방식의 변화과정과 구조적 특성 
4. 덧걸이 방식의 사용원인 
5. 맺음말 
References

• 홍은기 | Hong Eun Ki
• 장헌덕 | Jang Hun Duck Corresponding Author