(a) 
It shall be unlawful for any person to make any excavation or embankment in any street, avenue, alley or public easement in the city, other than for the purpose of erecting utility poles, towers and fixtures, without first applying for and obtaining a written permit from the building official.
(b) 
Public utility companies may perform emergency work during the nighttime or at times during which the city hall is closed, without the permit required by this section, but it will be necessary for any such public utility company to obtain the permit the next day following such work, or the next day the city hall is open for business.
(1977 Code, sec. 19-2)
When any part of any street, avenue, alley or public easement shall be excavated, torn, dug or taken up for any purpose, or when an embankment is placed thereon, the person doing the same shall, immediately upon the completion of such work, and within ten (10) days after the completion thereof, repair or replace such street, avenue, alley or public easement to the same condition in which it existed prior to any such excavation or work, and such replacement or repair shall be done in a skillful and permanent manner to the satisfaction of the building official and in accordance with the codes, specifications and ordinances of the city.
(1977 Code, secs. 19-3)
It shall be unlawful for any person to make any excavation of whatsoever kind in the city in, along or near any street, sidewalk, alley or highway without placing proper guardrails and signal lights or other warnings at, in or around the same, sufficient to warn the public of such excavation and to protect all persons using reasonable care from accident on account of the same.
(1977 Code, secs. 19-4)