Manufactured home standards are governed by subsection (4) of this section and not by the standards in subsection (1) of this section. (2) Nonresidential construction. With the exception of critical facilities, outlined in of this Code, new construction and substantial improvements of any commercial, industrial, or nonresidential structure shall either have the lowest floor (including basement or crawl space), electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities (including ductwork), elevated to one foot above the base flood elevation or, together with attendant utility and sanitary facilities, be designed so at one foot above the base flood elevation the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A licensed Colorado Professional Engineer or architect shall develop and/or review structural design, specifications, and plans for the construction, and shall certify the design and methods of construction are in accordance with accepted standards of practice as outlined in this subsection. Such certification shall be provided to the floodplain administrator prior to issuance of a certificate of occupancy. (3) Enclosures. New construction and substantial improvements, with fully enclosed areas below the lowest floor that are usable solely for parking of vehicles, building access, or storage in an area other than a basement and which are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must either be certified by a licensed Colorado Professional Engineer or architect or meet or exceed the following minimum criteria: a. A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided. b. The bottom of all openings shall be no higher than one foot above grade. c.
Manufactured home standards are governed by subsection (4) of this section and not by the standards in subsection (1) of this section. (2) Nonresidential construction. With the exception of critical facilities, outlined in of this Code, new construction and substantial improvements of any commercial, industrial, or nonresidential structure shall either have the lowest floor (including basement or crawl space), electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities (including ductwork), elevated to one foot above the base flood elevation or, together with attendant utility and sanitary facilities, be designed so at one foot above the base flood elevation the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. A licensed Colorado Professional Engineer or architect shall develop and/or review structural design, specifications, and plans for the construction, and shall certify the design and methods of construction are in accordance with accepted standards of practice as outlined in this subsection. Such certification shall be provided to the floodplain administrator prior to issuance of a certificate of occupancy. (3) Enclosures. New construction and substantial improvements, with fully enclosed areas below the lowest floor that are usable solely for parking of vehicles, building access, or storage in an area other than a basement and which are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must either be certified by a licensed Colorado Professional Engineer or architect or meet or exceed the following minimum criteria: a. A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided. b. The bottom of all openings shall be no higher than one foot above grade. c.
aurora-municipal-code-chapter-70-floods.docx