Design Standard of Common Duct Article 4

While planning the Common Duct system under the jurisdiction in accordance with Article 8 of this Act, the competent authority shall plan the settings of main duct and supplier duct based on road status, related projects of public works, and coordinating plan proposed by utility agencies (or organizations).Main ducts shall be installed under the road median or underneath the lanes, the supplier ducts underneath the sidewalk or both sidelanes.