본 연구에서는 창호철물 공사의 하자발생 원인을 제도(System), 설계, 시공 3가지 측면에서 제도 미비(공사시방서 작성능력 부족등), 창호철물의 중요성에 대한 사회적 인식부족, 설계도면 작성 기술력 부족, 설계비 저가등 7가지를 도출하였다. 도출된 7가지 원인 중 창호철물 공사의 하자 발생에 높은 영향을 미치는 원인은 제도 미비(공사시방서 작성능력 부족), 설계도면 작성 기술력 부족이 각각 1순위, 2순위로 나타났다. 또한 이러한 하자발생 원인이 실제프로젝트에서 건축사사무소와 시공사의 규모에 따라 어떻게 분포하는지와 시공품질에 미치는 영향을 분석·제시함으로써 향후 창호철물공사 하자방지 방안 마련을 위한 기초 연구를 수행하였다.

For this study, a series of interviews with engineers in the Korean construction industry was carried out through a formal workshop format to analyze the causes of the inferior quality of builders’ hardware. The authors established the causes of defects in window hardware construction in relation to the three aspects of system, design, and construction as involving the following seven factors: lack of system (including low ability to create construction specifications); low social awareness of the importance of window hardware; low technical capability to create design drawings; low design costs; small manufacturing capacity; low construction cost; and short duration of construction. Among the seven causes, the biggest cause of defects in window hardware construction is the lack of a system (low ability to create construction specifications), followed by low technical capability to create design drawings. In addition, this study carried out basic research to create measures to prevent defects in window hardware construction by analyzing how such causes of defects are distributed depending on the scale of architectural firms and construction companies during actual projects.