�1���
�Scope�
�2��� �References�
�3��� �Definitions��
�4��� �Abbreviations and acronyms��������
�5��� �Conventions�����
�6��� �Methods
for inspecting and repairing underground plastic ducts�����
������ �6.1��� �Inspection methods for
underground ducts��
������ �6.2��� �Repairing methods for underground ducts���
Appendix I � Korean experience��� �
������ �I.1��� ��� Inspection methods����������
������ �I.2���
��� Repairing methods�����������
Bibliography��� �