A building or premise shall be used only for the following purposes:

There may be any use, except that:

(1)

There may be no building for residential use and no trailers, except quarters for caretakers and similar personnel;

(2)

Junkyards, salvage and scrap operations, and automobile wrecking yards must be screened by a solid wall at least six (6) feet six (6) inches high located within building lines; and

(3)

The following uses must be given separate approval by the city council before a building permit is issued:

Acid manufacturing.

Cement, lime, gypsum or plaster of Paris manufacturing.

Distillation of bone.

Explosives manufacturing or storage.

Fat rendering.

Fertilizer manufacturing.

Gas manufacturing.

Garbage, offal or dead animals, reduction or dumping.

Glue manufacturing.

Petroleum, or its products, refining of.

Smelting of tin, copper, zinc or iron ores.

Stockyards or slaughter of animals.

Before granting such separate approval, the city council shall refer applications to the chief of the division of fire and/or the city planning and zoning commission for study, investigation and report. If no report is received in thirty (30) days, the city council may assume approval of the application.

(Code 1962, § 11-9-1)

There are no height and area regulations for nonresidential uses.

(Code 1962, § 11-9-2)

Off-street parking space shall be provided in accordance with the requirements for specific uses set forth in section 30-226.

(Code 1962, § 11-9-3)

Residential uses existing within an I District at the time of adoption of this chapter or subsequent designation of an I District shall not be considered as nonconforming uses. The reconstruction, alteration, repair or expansion of any such residential use shall comply with the area regulations and height regulations as set forth in the R-M District Regulations. No reconstruction, alteration, repair or expansion of any existing or destroyed single-family residence or two-family residence shall increase the number of dwelling units upon a lot in excess of the quantity present at the time such lot became subject to the I District regulations.

(Code 1962, § 11-9-4)