The purpose of this section is to alleviate or prevent congestion of the public streets and so promote the safety and welfare of the public, by establishing minimum requirements for the off-street parking and loading and unloading of motor vehicles in accordance with the use to which property is put.

(Ord. No. 2001-26, § 1(3-1), 10-8-2001; Ord. No. 2005-20, § 2(3-1), 9-12-2005)

(a)

Procedure. An application for a building permit for a new or enlarged building, structure or use, shall include therewith a plot plan, drawn to scale and fully dimensioned, showing any parking or loading facilities to be provided in compliance with the requirements of these suggested standards.

(b)

Scope of regulations. The off-street parking and loading provisions herein shall apply as follows:

(1)

When the intensity of use of any building, structure, or premises shall be increased through addition of dwelling units, gross floor area, seating capacity (18 inches per seat), or other units of measurement specified herein for required parking or loading facilities, parking and loading facilities herein shall be provided for such increase in intensity of use. However, no owner of a building or structure lawfully established prior to May 1, 1990, shall be required to provide such additional parking or loading facilities unless and until the uses established increase the parking requirements by 15 percent or more measured by the requirements, existing on May 1, 1990, in which event parking or loading facilities as required herein shall be provided for the total increase.

(2)

Whenever the existing use of a building or structure shall hereafter be changed to a new use, parking or loading facilities shall be provided as required for such new use. However, if the said building or structure was erected prior to May 1, 1990, additional parking or loading facilities are mandatory only in the amount by which the requirements for the new use would exceed those for the existing use if the latter were subject to the parking and loading provisions herein.

(c)

Existing parking and loading facilities. Accessory off-street parking or loading facilities that are located on the same lot as the building or use served, and that were in existence on May 1, 1990, or were provided voluntarily after such effective date shall not thereafter be reduced below, or if already less than, shall not further be reduced below the requirements of this chapter for a similar new building or use.

(d)

Permissive parking and loading facilities. Nothing in this chapter shall be deemed to prevent the voluntary establishment of off-street parking or loading facilities to serve any existing use of land or buildings provided that all regulations herein governing the location, design, improvement, and operation of such facilities are adhered to.

(e)

Damage and destruction. For any conforming or legally nonconforming building or use which is in existence on May 1, 1990, which subsequent thereto is damaged or destroyed by fire, collapse, explosion, or other cause, and which is reconstructed, re-established, or repaired, off-street parking or loading facilities equivalent to any maintained at the time of such damage or destruction shall be restored or continued in operation. However, in no case shall it be necessary to restore or maintain parking or loading facilities in excess of those required by this chapter for equivalent new uses or construction.

(Ord. No. 2001-26, § 1(3-2), 10-8-2001; Ord. No. 2005-20, § 2(3-2), 9-12-2005)

(a)

Use of parking facilities. Off-street parking facilities accessory to residential use and developed in any residential district in accordance with the requirements of this section, shall be used solely for the parking of passenger automobiles and not more than one truck of not more than 1¼ tons capacity used by occupants of the dwelling structures to which such facilities are accessory. Under no circumstances shall required parking facilities accessory to residential structures be used for the storage of commercial vehicles or for the parking of automobiles belonging to the employees, owners, tenants, visitors, or customers of business or manufacturing establishments.

(b)

Joint parking facilities. Off-street parking facilities for different buildings, structures, or uses, or for mixed uses, may be provided collectively in any zoning district in which separate parking facilities for each constituent use would be permitted, provided that the total number of spaces so located together shall not be less than the sum of the separate requirements for each use.

(Ord. No. 2001-26, § 1(3-3), 10-8-2001; Ord. No. 2005-20, § 2(3-3), 9-12-2005)

(a)

Applicability. The following design and maintenance standards shall apply to all accessory parking facilities and to all commercial or public parking facilities built as a primary land use.

(b)

General on-site circulation design standards.

(1)

There shall be an adequate, safe, and convenient arrangement of pedestrian circulation facilities, roadways, driveways, off-street parking, and loading space.

(2)

For access, each required off-street parking space shall open directly upon an aisle or driveway of such width and design as to provide safe and efficient means of vehicular access to such parking space. All off-street parking facilities shall be designed with appropriate means of vehicular access to a street or alley in a manner which will least interfere with traffic movements.

(3)

Roads, pedestrian walks, and open space shall be designed as integral parts of an overall site design. They shall be properly related to existing and proposed buildings and appropriate landscaping.

(4)

Buildings, vehicular circulation, and open spaces shall be arranged so that pedestrians moving between buildings are not unnecessarily exposed to vehicular traffic.

(5)

Landscaped, paved, and comfortably graded pedestrian walks shall be provided along the lines of the most intense use, particularly from building entrances to streets, parking areas, and adjacent buildings.

(6)

The materials used in the design of paving, lighting fixtures, retaining walls, fences, curbs, and benches shall be of good appearance, easily maintained, and indicative of their function.

(7)

Ramps shall be provided giving access from parking areas to the building served for disabled persons utilizing wheelchairs.

(c)

General on-site parking and loading design standards.

(1)

A site plan shall be submitted to the city engineer for approval when the required off-street parking is for more than three parking spaces.

(2)

Parking facilities shall be landscaped and screened from public view to the extent necessary to eliminate unsightliness and monotony of large concentrations of parked cars.

(3)

Parking facilities shall be designed with careful regard to orderly arrangement, topography, landscaping, ease of access, and shall be developed as an integral part of an overall site design.

(4)

Any above grade loading facility shall be screened from public view to the extent necessary to eliminate unsightliness.

(5)

Adequate parking spaces shall be specially designated for the parking of vehicles of disabled persons. Such spaces shall be located close to the building entry. All parking spaces for the physically handicapped shall comply with the standards set forth by the Americans with Disabilities Act, Title III: Public Accommodations.

(d)

Sizes of parking spaces. The following schedule of parking space and layout standards shall apply to all parking facilities in the city, in accordance with this article:

(e)

Parking surface, drainage, and maintenance. All open off-street parking areas shall be improved with a compacted select gravel base surfaced with an all-weather, dustless material suitably designed for the intended use to a standard approved by the city engineer. Parking and loading facilities shall be provided with adequate stormwater drainage facilities to prevent damage or inconvenience to abutting property and/or public streets and alleys. Parking and loading areas shall be maintained in a clean, orderly, and dust-free condition at the expense of the owner or lessee.

(f)

Marking. All parking spaces shall be marked by durable painted lines at least four inches wide and extending the length of the space or by curbs or other means to indicate individual spaces. Signs or markers located on the surface within a parking lot shall be used as necessary to ensure efficient and safe traffic operation of the lot.

(g)

Lighting. Lighting shall be provided to illuminate any off-street parking or loading spaces to be used at night. If provided, the lighting shall be arranged and installed to deflect, shade, and focus lights away from adjacent properties. The height, type, spacing, and degree of cut-off of a light standard may be further regulated by the city engineer in relation to specific site conditions or types of development. Standards to be used shall be in accordance with the Illuminating Engineering Society of North America's publication entitled "Lighting for Parking Facilities."

(h)

Screening and landscaping. All parking and loading areas shall be properly screened and landscaped as set forth in this article. It is the purpose and intent of this article to require adequate protection for contiguous property against undesirable effects from the creation and operation of parking or loading areas, and to protect and preserve the appearance and character of the surrounding neighborhoods and of the city through the screening effects and aesthetic qualities of such landscaping.

(1)

The landscaping shall include to the extent necessary to further the intent of this section, berms, shrubs, bushes, hedges, trees, decorative walls, or fencing as set forth below.

(2)

The frontage along the entire parking or loading area adjacent to any public or private street shall be landscaped and protected so as to separate and screen any parking area from the adjacent streets.

(3)

When off-street parking or loading uses and other areas zoned for any use except one-family and two-family residential districts, are located adjacent to a residential district or to any lot upon which there is a dwelling as a permitted use, there shall be provided along the lot line a continuous, solid fence, a masonry wall, or a densely planted compact hedge, to a height adequate to prevent the direct light from automobile headlights being cast on adjacent residential units both with a minimum height of four feet and not more than six feet except that the height of such fence or wall shall not exceed three feet within any front yard setback.

(4)

In addition to any landscaped front, back, or side yard areas required by this or any other section, a minimum of ten square feet of interior landscaped area for each parking space, shall be provided within a parking lot which has 30 or more parking spaces. The landscaping shall be in one or more areas so as to minimize and reduce the apparent size of parking areas.

(5)

All interior landscaped areas provided in accordance with subsection (h)(4) of this section, shall be raised and curbed and shall have a minimum area of 30 square feet and a minimum width of five feet. The ends of parking rows abutting a circulation aisle shall be defined by interior landscaped areas whenever feasible.

(6)

No landscaped hedge shall be less than two feet in height, and three feet in spread; however, no hedge, wall, or berm shall exceed three feet in height within ten feet of any driveway opening. The individual plants used in the development of such a hedge shall be placed so as to be not more than 24 inches on center.

(7)

Interior planting bed areas, which are used for the planting of trees, or which are used for landscaping treatment generally, may be treated with either grass and/or other types of ground cover or open spaced pavers on a sand and gravel base located beneath the surrounding trees and shrubs.

(8)

All landscaping shall be permanently maintained in good condition with at least the same quality and quantity of landscaping as initially approved.

(9)

A perimeter landscaped buffer strip shall be provided and maintained at a width of not less than five feet between a parking lot or driveway and the abutting property line at a side or rear yard. The landscaped strip shall be at least five feet in width along any front or side property line abutting a public or private street. More restrictive standards for yards or buffering shall govern where required by this chapter.

(10)

All landscaped areas in parking areas or adjacent to parking or loading areas, or that can be encroached upon by a motor vehicle, shall be provided with an adequate permanent curb as approved by the city engineer to restrict the destruction of the landscaped areas by vehicles.

(i)

Number of entrances and exits to parking lots. There shall be not more than one entrance and one exit or one combined entrance and exit along any street unless same is deemed necessary by the plan commission and/or city engineer for the alleviation of traffic congestion and interference of traffic movement along such street. The maximum width for entrances and exits shall be 35 feet for commercial and industrial and 30 feet for residential.

(j)

Maintenance. Any persons operating or owning a parking lot shall keep it free, as may be practical, of dust and loose particles and shall promptly remove the snow and ice from the surface of the parking lot. Such persons shall also keep all adjacent sidewalks free from dirt, ice, sleet, and snow and shall keep the sidewalks in a safe condition for use by pedestrians. All signs, markers, or any other methods used to indicate direction of traffic movement and location of parking spaces shall be maintained in a neat and legible condition. Likewise any walls, landscaping, including trees and shrubbery, as well as surfacing and curbing of the parking lot, shall be maintained in good condition throughout its use for parking purposes. The city shall have the authority to prohibit use of the area for parking purposes unless and until proper maintenance, repair, or rehabilitation is completed, including the replacement of any landscaping material which may die from time to time, or the failure of the landscape irrigation or surface drainage system within the parking area.

(Ord. No. 2001-26, § 1(3-4), 10-8-2001; Ord. No. 2005-20, § 2(3-4), 9-12-2005)

(a)

Extent of control. Off-street automobile parking facilities shall be located as hereinafter specified; where a distance is specified, such distance shall be walking distance measured from the nearest point of the parking area to the nearest entrance of the building that said parking area is required to serve:

(1)

For one- and two-family dwellings, on the same lot with the building they are required to serve.

(2)

For three-and four-family dwellings not over two stories in height, on the same lot or parcel of land as the building they are required to serve. For the purpose of these suggested standards, a group of such uses constructed and maintained under single ownership or management shall be assumed to be on a single lot or parcel of land.

(3)

For apartment houses containing four or more dwelling units, on the same lot or parcel of land as the building they are required to serve, or on a separate lot or parcel of land not more than 300 feet from the nearest entrance to the principal building being served, provided the lot or parcel of land selected for the parking facilities is located in an apartment district or a less restricted district.

(4)

For roominghouses, lodginghouses, clubs, hospitals, sanitariums, orphanages, homes for the aged, convalescent homes, dormitories, sorority and fraternity houses, and for other similar uses, the off-street parking facilities required shall be on the same lot or parcel of land as the principal building or buildings being served, or upon properties contiguous to the zoning lot upon which is located the building or buildings they are intended to serve.

(5)

For uses other than those specified above, off-street parking facilities shall be provided on the same lot or parcel of land as the principal building being served, or on a separate lot or parcel of land not over 1,000 feet from the entrance of the principal building, measured from the nearest point of the parking area, provided the separate lot or parcel of land intended for parking facilities is located in the same district as the principal permitted use or in a less restricted district.

(b)

Control of off-street parking facilities. When required parking facilities are provided on land other than the zoning lot on which the building or use served by such facilities is located, they shall be and remain in the same possession or ownership as the zoning lot occupied by the building or use to which the parking facilities are accessory. No such off-site parking facilities shall be authorized and no occupancy permit shall be issued where the plans call for parking other than on the same zoning lot until and unless the zoning board of appeals has reviewed the plans and heard the applicant and has made findings that the common ownership or possession of the zoning lot and that the site of the parking facilities will be maintained at all times during the life of the proposed use or building. A covenant to this effect shall be recorded with the DeKalb, LaSalle, or Kendall County Recorders.

(Ord. No. 2001-26, § 1(3-5), 10-8-2001; Ord. No. 2005-20, § 2(3-5), 9-12-2005)

For the following uses, accessory off-street parking spaces shall be provided as required hereinafter. Parking spaces required on an employee basis shall be based on the maximum number of employees on duty or residing, or both, on the premises at any one time.

(1)

Residential uses, as follows:

a.

One-family dwellings and two-family dwellings: Two parking spaces shall be provided for each dwelling unit.

b.

Buildings containing more than two dwelling units:

1.

Efficiency and one bedroom units: 1½ parking spaces.

2.

Two bedroom units: two parking spaces.

3.

Three or more bedroom units: 2¼ parking spaces.

c.

Motels and inns: One parking space shall be provided for each guest room, plus one space for the manager and two additional spaces for each three employees.

d.

Hotels: One parking space for each guest room and one parking space for each employee shall be provided.

e.

Lodginghouses, roominghouses, and boardinghouses: One parking space shall be provided for each lodging room, plus one space for each employee.

f.

Private clubs and lodges (with sleeping facilities for guests): One parking space shall be provided for each lodging room, plus parking spaces equal in number to 75 percent of the capacity in persons (exclusive of lodging room capacity) of such club or lodge.

g.

Mobile home parks: Two parking spaces shall be provided for each mobile home space.

h.

Community residences: Two parking spaces shall be provided for each community residence.

(2)

Retail and service uses, as follows:

a.

Retail stores and banks: One parking space shall be provided for each 200 square feet of floor area. Drive-in banks or other similar drive-in establishments shall provide six stacking spaces per teller or customer service window.

b.

Automobile service stations: One parking space shall be provided for each employee, plus three spaces for each service stall.

c.

Bowling alleys: Five parking spaces shall be provided for each alley, plus such additional spaces as may be required for affiliated uses, bars, restaurants, and the like.

d.

Car wash: Ten stacking spaces shall be provided for each wash rack, plus one parking space for each employee.

e.

Establishments dispensing food or beverages for consumption on the premises: One parking space shall be provided for each 100 square feet of floor area.

f.

Furniture and appliance stores, household equipment, or furniture repair shops: One parking space shall be provided for each 600 square feet of floor area.

g.

Theaters (indoor): For single or double screen, one parking space shall be provided for each two seats; for three or more screens, one parking space shall be provided for each 3½ seats.

h.

Undertaking establishment, funeral parlors: 25 parking spaces shall be provided for each chapel or parlor, plus one parking space for each funeral vehicle kept on the premises.

(3)

Office-business, professional, and governmental: One parking space shall be provided for each 200 square feet of floor area.

(4)

Medical or dental clinics: Eight parking spaces shall be provided for every doctor or one space for every 200 square feet of floor area, whichever is greater.

(5)

Wholesale establishments (but not including warehouses and storage buildings other than accessory): One parking space shall be provided for each 600 square feet of floor space.

(6)

Manufacturing uses or any establishments engaged in production, processing, cleaning, servicing, testing, or repair of materials, goods, or products: One parking space shall be provided for each employee as related to the working period when the maximum number of employees are employed on the premises, plus one parking space for each vehicle used in the conduct of the enterprise. But in no case less than one parking space per 600 square feet of floor space.

(7)

Warehouses and storage buildings: One parking space shall be provided for each employee, plus one space for each vehicle used in the conduct of the business.

(8)

Community service uses, as follows:

a.

Church, school, college, and other institutional auditoriums: One parking space shall be provided for each four auditorium seats. Adequate space shall also be provided for buses used in connection with activities of the institution, and all loading and unloading of passengers shall take place upon the premises.

b.

Colleges, universities, and business, professional, and trade schools: One parking space shall be provided for each employee and one parking space shall be provided for each student based on the maximum number of students attending classes on the premises at any one time during any 24-hour period.

c.

Health centers, government operated: Eight parking spaces shall be provided for every doctor or one space for every 200 square feet of floor area, whichever is greater.

d.

Hospitals: Two parking spaces shall be provided for each three hospital beds, plus one parking space for each employee, plus one parking space for each doctor assigned to the staff.

e.

Libraries, art galleries, and museums, public: One parking space shall be provided for each 500 square feet of floor area.

f.

Municipal or privately owned recreation buildings or community centers: One parking space shall be provided for each employee, plus spaces adequate in number, as determined by the plan commission, to serve the visiting public.

g.

Public utility and public service uses: One parking space shall be provided for each employee, plus spaces adequate in number, as determined by the plan commission, to serve the public, plus one space for each service vehicle.

h.

Schools, nursery, elementary: One parking space shall be provided for each employee plus one for each 20 students.

i.

High school: One parking space shall be provided for each employee plus one space for each three students.

(9)

Places of assembly: Stadiums, arenas, auditoriums (other than church, college, or institutional school), convention halls, dance halls, exhibition halls, skating rinks, and other similar places of assembly: Parking spaces equal in number to one for every two persons shall be provided.

(10)

Miscellaneous uses, as follows:

a.

Fraternities, sororities, and dormitories: One parking space shall be provided for each three active resident members, plus one parking space for the manager thereof.

b.

Rest homes, nursing homes, and institutional care facilities: One parking space shall be provided for each four beds, plus one parking space for each employee, plus one parking space for each doctor assigned to the staff or one parking space for every 500 square feet of floor area, whichever is greater.

c.

Private clubs and lodges (without sleeping facilities for guests): Parking spaces equal in number to 40 percent of the capacity in persons shall be provided.

d.

Theaters, automobile drive-in: Reservoir parking space equal to ten percent of the vehicle capacity of such theaters shall be provided.

e.

For the following uses, parking spaces shall be provided in adequate number, as determined by the city engineer, to serve persons employed or residing on the premises as well as the visiting public:

1.

Airports or aircraft landing fields; heliports.

2.

Convents and monasteries.

3.

Crematories or mausoleums.

4.

Implement dealer, machinery, and automobile sales.

5.

Outdoor amusement establishments, fairgrounds, permanent carnivals, kiddy parks, and other similar amusement centers.

6.

Penal and correctional institutions.

7.

Rectories and parish houses.

8.

Swimming pools.

(11)

Mixed uses: When two or more uses are located on the same zoning lot within the same building, parking spaces equal in number to the sum for the most similar listed use, or as determined by the city engineer.

(12)

Other uses: For uses not listed heretofore in this schedule of parking requirements, parking spaces shall be provided on the same basis as required for the most similar listed use, or as determined by the city engineer.

(Ord. No. 2001-26, § 1(3-6), 10-8-2001; Ord. No. 2004-12, §§ 2(3-6-4), 3(3-6-8), 4-12-2004; Ord. No. 2004-27, § 3(3-6-10), 6-14-2004; Ord. No. 2005-07, § 9(3-6-1), 4-11-2004; Ord. No. 2005-20, § 2(3-6), 9-12-2005)

(a)

Location. All required loading berths shall be located on the same zoning lot as the use served. No loading berth for vehicles over two tons' capacity shall be closer than 50 feet to any property in a residence district, unless completely enclosed by building walls, or a uniformly painted solid fence or wall, or any combination thereof, not less than six feet in height. No permitted or required loading berth shall be located in any front or side yard. No permitted or required loading berth shall be located within 25 feet of the nearest point of intersection of any two streets.

(b)

Size. Unless otherwise specified, a required loading berth shall be at least ten feet in width by at least 25 feet in length, exclusive of aisles and maneuvering space, and shall have a vertical clearance of at least 14 feet.

(c)

Access. Each required off-street loading berth shall be designed with appropriate means of vehicular access to a street or alley in a manner which will least interfere with traffic movement.

(d)

Surfacing. All open off-street loading berths shall be improved with a compacted base of Number 8 crushed stone, not less than eight inches thick, and surfaced with not less than two inches of asphaltic concrete or six inches of Portland cement concrete with pavement mesh on a compacted subgrade or equal.

(e)

Repair and service. No motor vehicle repair work or service of any kind shall be permitted in conjunction with loading facilities provided in any residence or business districts.

(f)

Loading berths not used for parking. Space allocated to any off-street loading berth shall not, while so allocated, be used to satisfy the space requirements for any off-street parking facilities or portion thereof.

(g)

Loading berths provided for special uses. For special uses other than prescribed for hereinafter, loading berths adequate in number and size to serve such uses, as determined by the city engineer, shall be provided.

(h)

Receiving facilities for off-street loading. Uses for which off-street loading facilities are required herein, but which are located in buildings of less floor area than the minimum prescribed for such required facilities, shall be provided with adequate receiving facilities off of any adjacent alley, service drive, or open space on the same lot which is accessible by motor vehicle.

(Ord. No. 2001-26, § 1(3-7), 10-8-2001; Ord. No. 2005-20, § 2(3-7), 9-12-2005)

For the uses listed in this section, off-street loading berths shall be provided on the basis of gross floor area of buildings or portions thereof devoted to such uses in the amounts shown herein:

(1)

Hospitals, sanitariums, and other institutional uses: One berth plus one additional berth for each 100,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(2)

Hotels, clubs, and lodges except as set forth in subsection (3) of this section One berth for each structure over 15,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(3)

Hotels, clubs, and lodges when containing any of the following: retail shops, convention halls, auditoriums, exhibition halls, or business or professional offices (other than accessory): One berth for each structure 20,000 to 100,000 square feet plus one berth for each additional 100,000 square feet or fraction thereof of gross floor area. Minimum horizontal dimensions are ten feet by 50 feet.

(4)

Retail stores: One berth for each structure over 10,000 square feet of gross floor area plus one berth for each additional 100,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(5)

Establishments dispensing food or beverages for consumption on the premises: Two berths for each structure over 10,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(6)

Motor vehicle and machinery sales: One berth plus one additional berth for each 25,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 50 feet.

(7)

Wholesale establishments (but not including warehouse and storage buildings other than accessory): Three berths for each structure 40,000 to 100,000 square feet of gross floor area plus one berth for each additional 100,000 square feet or fraction thereof of gross floor area. Minimum horizontal dimensions are ten feet by 50 feet.

(8)

Auditoriums, convention halls, sports areas, stadiums, and halls: One berth plus one additional berth for each 100,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(9)

Bowling alleys: One berth plus one additional berth for each 100,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 50 feet.

(10)

Banks and offices, business, professional, and governmental: One berth for each structure of 10,000 square feet of gross floor area plus one berth for each additional 100,000 square feet or fraction thereof of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(11)

Manufacturing uses of any establishment engaged in production, processing, cleaning, servicing, testing, or repair of goods, materials, and products: One berth for each structure plus one for each 60,000 square feet of gross floor area over 40,000 square feet. Minimum horizontal dimensions are ten feet by 25 feet for the first berth; additional berths shall be ten feet by 50 feet.

(12)

Warehouses and storage buildings: One berth for each structure plus one for each additional 100,000 square feet of gross floor area. Minimum horizontal dimensions are ten feet by 50 feet.

(13)

Theaters: One berth for each structure 8,000 to 25,000 square feet of gross floor area plus one for each additional 50,000 square feet or fraction thereof of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(14)

Undertaking establishments and funeral parlors: One berth for each structure 8,000 to 100,000 square feet of gross floor area plus one for each additional 100,000 square feet or fraction thereof of gross floor area. Minimum horizontal dimensions are ten feet by 25 feet.

(Ord. No. 2001-26, § 1(3-8), 10-8-2001; Ord. No. 2005-20, § 2(3-8), 9-12-2005)