As used in this chapter, “public project” means:
- (a) A project for the erection, improvement, painting, or repair of public buildings and works.
- (b) Work in or about streams, bays, waterfronts, embankments, or other work for protection against overflow.
- (c) Street or sewer work except maintenance or repair.
- (d) Furnishing supplies or materials for any such project, including maintenance or repair of streets or sewers.