Section 3112. Greenhouses

3112.1 General.

Structures with glazed surfaces that are used for horticulture are classified as greenhouses. These structures must be independent and separated from other buildings on the same lot. All greenhouses must conform to the requirements of this Code for exits and for materials.

3112.1.1 Commercial greenhouses.

Commercial greenhouses are classified as Group S-2, Low Hazard Storage Buildings, and must comply with § 503 {"General Building Height and Area Limitations"} and Tables 601 {"Fire-Resistant Rating Requirements for Building Elements"} and 602 {"Fire-Resistant Rating Requirements for Exterior Walls"} of this Code.

3112.1.2 Residential greenhouses.

Greenhouses that are located on a lot zoned for residential use are classified as Group U, Utility and Miscellaneous Structures.

3112.1.2.1 Height.

Residential greenhouses may not exceed 20 feet (6.10 m) above grade.

3112.1.2.2 Size.

The floor area of a residential greenhouse must conform to the requirements of the Baltimore City Zoning Code.

3112.1.2.3 Location.

Residential greenhouses must be located at least 36 inches (914 mm) from any property line or other structure.

3112.2 Accessibility.

Greenhouses must be accessible in accordance with the Maryland Accessibility Code, COMAR 09.12.53.

3112.3 Structural design.

Greenhouses must comply with the structural design requirements for greenhouses in Chapter 16 {"Structural Design"} of this Code.

3112.4 Glass and glazing.

Glass and glazing used in greenhouses must comply with § 2405 {"Sloped Glazing and Skylights"} of this Code.

3112.5 Light-transmitting plastics.

Light-transmitting plastics are permitted in lieu of plain glass in greenhouses and must comply with § 2606 "Light-Transmitting Plastics"} of this Code.

3112.6 Membrane structures.

Greenhouses that are membrane structures must comply with § 3102 {"Membrane Structures"} of this Code.

3112.6.1 Plastic film.

Plastic films used in greenhouses must comply with § 3102.3 {"Type of construction"} of this Code.