Section 25-13 shall not apply in the following cases:
(1) When work is only for the purpose of repairing or installing a sidewalk and a permit has been obtained for such work.
(2) When work is only for purposes of removing or changing a curb or installing or repairing a driveway and a permit has been obtained for such work.
(3) When work is done for municipal purposes by public works department or under a contract administered by the department of public works.
(4) When, in an emergency, it is impractical to obtain a permit before work is done. The police department shall be immediately notified and a permit shall be obtained within forty- eight (48) hours thereafter.
(Ord. No. 2657, § 1, 10-19-64)