This study aims to examine the cutting traces remaining on the bracket tie beams of Sungnyemun gate, identifying the tools employed during the late Goryeo to early Joseon periods by specific processes, and deliberating on the timber shaping techniques utilized in advanced architectural construction during the late Goryeo to early Joseon eras. Through the research, it was confirmed that in the production of Sungnyemun Gate's bracket tie beams during the 14th to 15th centuries, both the timber splitting and ripsawing methods were used in conjunction. Moreover, the wood finishing process revealed the use of a plane. It can be inferred that the characteristics of the plane used during that time were not significantly different from those observed in the later period of the Joseon dynasty. The ripsawing and plane finishing techniques were evident in various parts of the bracket tie beams of Sungnyemun gate across the reigns of king Taejo and Sejong, indicating that the techniques involving ripsaw and plane were already prevalent in the late Goryeo period. Consequently, it can be inferred that the ripsawing and plane finishing techniques might have been applied in the construction of prominent government buildings in Hanyang(Seoul), including Gyeongbokgung Palace, and in the residences of royalty and nobility after the establishment of the Joseon dynasty.

려말선초 혼란기에 불교는 타락하고 활발했던 조영의 분위기는 침체기에 빠져들었다. 그런 가운데 우리나라 사찰건축의 명맥을 유지된 몇 가지 중요한 원인을 가지고 있었다. 첫째, 건물짓는 기술자가 바로 승장 대목 자신들이라는 점과 혼란기를 틈타 엄격함으로부터 어느 정도 자유스럽게 영조할 수 있었다는 점이다. 이러한 인식의 변화는 그대로 건물에 나타나게 된다. 이러한 대표적인 사례가 사찰 전각 측면공포에 대한 등간격배열방식이다. 그 동안 이 문제에 대해 심도갚은 연구가 진행되지 않은 상태에서 서둘러 규정짓는 자세에 문제가 있었다고 본다. 본 연구는 이러한 문제점을 제기하면서 보다 심도있는 연구가 되기를 바라는 마음에서 고찰되었다.