Under the supervision, direction and control of his superiors, the City Engineer shall:
(1) Act as engineering advisor for the Mayor, Council and Municipal agencies, commissions and boards unless otherwise provided by law or ordinance;
(2) Provide the engineering services for the City in the construction, purchase and maintenance of its facilities, public works, and equipment, except such services for the City as are performed by independent contractors or assigned to other offices, departments or agencies of the City, and, to the extent that any such services are performed by independent contractors, to inspect and certify, prior to acceptance and payment, the satisfactory performance of all work done for the City by independent contractors.
(3) Supervise and regulate the issuance of permits for and the inspection of buildings, building construction, electrical, plumbing, elevator and other building installations; and
(4) Maintain, as custodian for the City, all records, plats, maps, specifications, and similar documents pertaining to the public works, property, improvements and streets, and to furnish upon request at such fee as may hereafter be established by ordinance, copies, certified or not, of any such material held as custodian.