제1장 사업개요............................................25 1.실측배경 및 목적....................................25 2.실측범위 및 방법....................................26 3.실측조사지침 .........................................27 4.조사방법..................................................32 5.조사일정 및 관계자.................................33 6.관련 회의.................................................34 제2장 연혁 및 주변 현황.............................37 1.연혁..........................................................37 2.주변 현황.................................................41 제3장 도성의 수계와 다리............................47 1.도성의 수계..............................................47 2.도서의 다리..............................................51 3.청계천의 다리...........................................52 제4장 성곽의 수문형식.................................63 1.홍예교의 형식...........................................63 2.성곽의 수문 .............................................64 제5장 청계천의 오간수문 구조 및 형식........71 1.오간수문의 개요........................................71 2.기초............................................................72 3.교대 및 교각.............................................77 4.상판형식.....................................................86 5.부대시설.....................................................87 제6장 유구해체 이전 및 실측조사 .................91 1.해체전 현황.................................................91 2.해체 이전 작업준비 및 순서........................93 3.상돌 해체 이전 및 실측조사........................96 4.상단 바닥석 해체 이전 및 실측조사............99 5.잡석층 해체 이전 및 실측조사.....................104 6.교각 해체 이전 및 실측조사.........................105 7.고대 해체 이전 및 실측조사..........................116 8.중단 바닥석 해체 이전 및 실측조사..............123 9.하단 바닥석 해체 이전 및 실측조사..............127 10.지정말목 조사..............................................130 11.부대시설.......................................................131 제7장 기타조사....................................................137 1.삼차원 스캐닝 조사........................................137 2.석재조사..........................................................147 3.목재 수종 및 연륜연대조사.............................178