Nothing in this subchapter shall prohibit any person from maintaining by virtue of any law, ordinance or permit any pipe or conduit in any highway or from making such excavation as may be necessary for the preservation of life or property when such necessity arises during such hours as the office of the Director of Public Works is closed, if the person making such excavation obtains a permit therefor within one day after the office of the Director of Public Works is first open subsequent to the making of such excavation.
('64 Code, § 19-17) (Ord. 164, passed 12-20-60)