It shall be unlawful for any person, as principal or agent, to make any improvement in any of the streets of the city, by or under private contract, unless permission from the City Engineer therefor is first secured and unless the deposit provided for in this chapter is made. The term
IMPROVEMENT, as used in this chapter, shall be deemed and is hereby declared to include the grading or regrading, the macadamizing or re-macadamizing, the graveling or re-graveling, the oiling or re-oiling, and the paving or repaving of any street, or the construction or reconstruction in any street or sidewalks, crosswalks, driveways, curbs or gutters.
(`83 Code, § 12.04.010)