Loading Space. Every building or part thereof erected or occupied for retail business, service, manufacturing, storage, warehousing, hotel, mortuary, or any other use similarly involving the receipt or distribution by vehicles of materials or merchandise shall provide and maintain on the same premises loading space in accordance with the following requirements:
1.
In the "B-1" General Business District and the "B-2" Central Business District and in the "I-1" Light Industrial District: one (1) loading space for each ten thousand (10,000) square feet, or fraction thereof, of floor area in the building.
2.
In the "I-2" Heavy Industrial District: one (1) loading space for the first five thousand (5,000) to fifteen thousand (15,000) square feet of floor area in the building and one (1) additional loading space for each fifteen thousand (15,000) square feet, or fraction thereof, of floor area in excess of fifteen thousand (15,000) square feet.