Sec. 19-2. - Definitions.
As used in this chapter the following words and terms shall have the following meanings unless the context of their usage clearly indicates another meaning:
0.2 percent flood elevation or flood level means the elevation above mean sea level that floodwaters have been calculated to have a 0.2 percent chance of reaching in any given year.
Addition means any alteration to an existing structure that increases its footprint.
AO, AH, or VO Zones (areas of shallow flooding) means those areas designated on the flood insurance rate map with a one percent or greater chance of flooding to an average depth of one to three feet, where a clearly defined channel does not exist, where the path of flooding is unpredictable, and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow.
Areas of combined probability means an area subject to both riverine and coastal flooding the limits of which are identified on the Flood Insurance Study profiles.
Base flood means a flood having a one percent chance of being equaled or exceeded in any one year.
Base flood elevation (BFE) or base flood level means the elevation above mean sea level that floodwaters have been calculated to reach during the base flood at a specific location.
Basement means any area of a building having its floor subgrade (below natural ground elevation) on all sides.
Breakaway wall means an open wooden lattice, insect screening or any other suitable building material approved by the city engineer that is not part of the structural support of the associated structure and that is intended to collapse under wind and water loads without causing collapse, displacement or other structural damage to the elevated portion of the structure or damage to the structural integrity of the structure on which breakaway walls are used. In addition, breakaway walls must be designed so that if carried downstream they will not cause damage to any other structure. Breakaway walls must have a design safe loading resistance of not less than ten and not more than 20 pounds per square foot. Use of breakaway walls that exceed a design safe loading resistance of 20 pounds per square foot (either by design or when so required by city or state codes) may be permitted only if a professional engineer, licensed in the State of Texas, certifies that the designs proposed meet the following conditions:
(1) Wall collapse shall result from a water load less than that which would occur during the base flood; and
(2) The elevated portion of the building and supporting foundation system shall not be subject to collapse, displacement, or other structural damage due to the effects of wind and water loads acting simultaneously on all building components (structural and nonstructural). Maximum wind and water loading values to be used in this determination shall each have a one percent chance of being equaled or exceeded in any given year (one hundred-year mean recurrence interval).
Certificate of Compliance means a document issued and filed in the Real Property Records by the city engineer indicating that a property owner has resolved a violation, temporary permit or substantial damage determination that caused a Certificate of Non-Compliance to be issued.
Certificate of Non-Compliance means a document issued and filed in the Real Property Records by the city engineer indicating that a property is in violation one or more provisions of this chapter; has been issued a temporary permit; or for which a substantial damage determination has not been resolved within six months from the date of the first notice of violation.
Coastal high hazard area—See definition of V1 through V30 Zones, VE Zones or V Zones.
Conveyance means, unless otherwise determined by the city engineer, the flow of water during the base flood with a velocity that is greater than one foot per second or a depth that is greater than one foot.
Critical facilities means facilities that materially affect the public health and welfare. Such facilities include, but are not be limited to:
(1) Hospitals, nursing homes, blood banks, health care facilities including those storing vital medical records, and housing likely to contain occupants who may not be sufficiently mobile to avoid death or injury during a flood;
(2) Police stations, fire stations, vehicle and equipment storage facilities, and emergency operations centers that are needed for flood response activities before, during, and after a flood;
(3) Public and private utility facilities that are vital to maintaining or restoring normal services to flooded areas before, during and after a flood;
(4) Structures or facilities that produce, use, treat, store, or dispose of highly volatile, flammable, explosive, toxic, and/or water-reactive materials;
(5) Drinking water plants and facilities, and wastewater treatment plants and facilities; and
(6) Schools, colleges, universities, and day care centers.
Development means any man-made change to improved or unimproved real estate, including, but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation, or drilling operations or storage of equipment or materials.
Elevated floor construction means an engineered foundation system that is not constructed on natural grade, but uses a combination of vertical and horizontal members to support a structure above natural grade.
Elevation certificate means a statement from an engineer or surveyor licensed by the State of Texas on the most current FEMA form certifying that the lowest floor of the structure has been elevated at least as high as required by this chapter.
Federal Emergency Management Agency (FEMA) means the federal agency under which federal floodplain regulations and related programs are administered.
Fill means any material that is placed in an area and increases the elevation of that area or displaces water volume.
Flood means a general and temporary condition of complete or partial inundation of normally dry land areas from:
(1) The overflow of inland or tidal waters;
(2) The unusual and rapid accumulation or runoff of surface waters from any source; or
(3) A combination of (1) and (2).
Flood insurance rate map (FIRM) or effective FIRM means the official flood insurance rate map promulgated by the federal insurance administrator of FEMA that delineates both the special flood hazard areas and the risk premium zones applicable to the city, as amended and supplemented from time to time. Under certain circumstances as provided in section 19-4 of this Code, the effective FIRM may be supplemented with additional flood elevation data for purposes of the administration of this chapter.
Flood insurance study (FIS) means the effective report provided by FEMA containing current flood profiles of the water surface elevations of the base flood as well as the flood boundary-floodway map.
Floodplain development permit means a permit issued under the provisions of this chapter for any development of a site located within a Houston special flood hazard area. The term shall also include a permit for the placement of a recreational vehicle for more than 180 days in a Houston special flood hazard area.
Floodproofing means any combination of structural and nonstructural additions, changes or adjustments to structures which reduce or eliminate flood damage to real estate or improved real property, water and sanitary facilities, structures and their contents.
Floodproofing certificate means a certificate issued by a registered professional engineer licensed in the State of Texas which states that he has developed and/or reviewed the structural design, specifications, and plans for the construction of a structure or improvement covered by the certificate and that the design and methods of construction are in accordance with accepted standards of practice for meeting the following requirements:
(1) The floodproofing methods used are adequate to withstand the flood depths, pressures, velocities, impact and uplift forces and other factors associated with the 0.2 percent chance flood; and
(2) Together with attendant utility and sanitary facilities, the structures are designed so that below the 0.2 percent chance flood level the structures are watertight with walls impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy.
Floodway means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than the height specified for the site in the flood insurance study.
Floodway conveyance offset volume means the volume of material that must be excavated and removed from the special flood hazard area to provide an equivalent storage volume necessary to reduce loss of conveyance associated with development within the floodway.
Functionally dependent use means a use which cannot perform its intended purpose unless it is located or carried out in close proximity to water. The term includes only docking facilities, port facilities that are necessary for the loading and unloading of cargo or passengers, and ship building and ship repair facilities, but does not include long-term storage or related manufacturing facilities.
General appeals board means that board organized and created under the provisions of the Construction Code.
Highest adjacent grade means the highest natural elevation of the ground surface next to the proposed walls of a structure immediately prior to construction.
Historic structure means any structure that is:
(1) Listed individually in the National Register of Historic Places or preliminarily determined by the Secretary of the Interior as meeting the requirements for individual listing on the National Register;
(2) Certified or preliminarily determined by the Secretary of the Interior as contributing to the historical significance of a registered historic district or a district preliminarily determined by the Secretary to qualify as a registered historic district;
(3) Individually listed on the Texas Inventory of Historic Places; or
(4) Other historic designation acceptable to the city engineer.
Houston special flood hazard area means the land in the special flood hazard area and in the floodplain within the city that is subject to a 0.2 percent or greater chance of flooding in any given year and is designated as unnumbered A Zones, AE Zones, AO Zones, AH Zones, A1 through A99 Zones, VO Zones, V1 through V30 Zones, VE Zones, V Zones, or X Shaded Zones.
Lake Houston means, for purposes of this chapter, the shoreline of an area bounded on the south by the Lake Houston Dam, on the northwest by the West Lake Houston Parkway Bridge and on the northeast by an imaginary line running generally east to west that intersects the confluence of Luce Bayou and the East Fork of the San Jacinto River, and is more particularly described as beginning at a point located at 30° 2′ 31.67″ N, 95° 7′ 12.09″ W and running generally west to 30° 2′ 32.02″ N, 95° 7′ 36.14″ W.
Lowest floor means the lowest floor of the lowest enclosed area (including basement) of a structure. An unfinished or flood-resistant enclosure, used solely for parking of vehicles, building access or storage, in an area other than a basement area, is not considered a building's lowest floor, provided that such enclosure is not built to render the structure in violation of the applicable design requirements of this chapter or any other state or federal statute, rule, or regulation.
Manufactured home means a structure, transportable in one or more sections, which is built on a permanent chassis and is designed for use with or without a permanent foundation when connected to the required utilities including, but not limited to, a manufactured home as defined in section 29-1 of this Code.
Manufactured home park or subdivision means a parcel (or contiguous parcels) of land divided into two or more manufactured home lots for rent or sale including, but not limited to, a manufactured home park or manufactured home subdivision as defined in section 29-1 of this Code.
Market value means the value of a structure as established by one of the following:
(1) The improvement value assigned to the structure by the central appraisal district for the county in which the structure is located;
(2) The computed actual cash value as determined by the FEMA-approved Substantial Damage Estimator (SDE) methodology;
(3) An appraisal performed by a certified real estate appraiser licensed by the Texas Appraiser Licensing and Certification Board; or
(4) Any other similar method acceptable to the city engineer.
Market value shall not include land value.
Mean high tide means the average of all recorded high tides as recorded and reported by the National Weather Service.
Mean sea level means the National Geodetic Vertical Datum (NGVD) of 1929 or other datum, to which base flood elevations shown on the FIRM are referenced.
Minimum flood protection elevation means the 0.2 percent flood elevation, plus 2 feet.
Modular home means a structure or building module that is manufactured at a location other than the location where it is installed and used as a residence by a consumer, transportable in one or more sections on a temporary chassis or other conveyance device, and designed to be used as a permanent dwelling when installed and placed upon a permanent foundation system. This term shall include the plumbing, heating, air conditioning and electrical systems contained in the structure. This term does not include a manufactured home as defined in this chapter or building modules utilizing concrete or masonry as the primary structural component.
New construction means the initial construction of a structure.
Permit means a floodplain development permit issued under the provisions of this chapter.
Plat means any of the following: a Class II or Class III subdivision plat or a street dedication plat as those terms are defined in chapter 42 of this Code or a manufactured home subdivision plat as that term is used in chapter 29 of this Code.
Recreational vehicle means a vehicle that is:
(1) Built on a single chassis;
(2) Four hundred square feet or less when measured at the largest horizontal projections;
(3) Designed to be self-propelled or permanently towable by a light duty truck; and
(4) Designed primarily not for use as a permanent dwelling but as temporary living quarters for recreational, camping, travel, or seasonal use.
Section 1316 means 42 U.S.C. 4023, as amended, the section of the National Flood Insurance Act of 1968, which provides for the denial of flood insurance coverage for any property the FEMA Administrator finds has been declared by a duly constituted state or local authority to be in violation of state or local floodplain management regulations.
Special flood hazard area means the land in the floodplain within the city, that is subject to a one percent or greater chance of flooding in any given year and is designated as unnumbered A Zones, AE Zones, AO Zones, AH Zones, A1 through A99 Zones, VO Zones, V1 through V30 Zones, VE Zones or V Zones.
Start of construction, for other than new construction or substantial improvements under the Coastal Barrier Resources Act, 16 U.S.C. § 3501 et seq., includes substantial improvement, and means the date the building permit was issued, provided the actual start of construction, repair, reconstruction, placement, or other improvement is or was within 180 days after the permit date. The actual start means either the first placement of permanent construction of a structure on a site, such as the placement of concrete slabs or footings, the installation of piles, the construction of columns, or any work beyond the stage of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, such as clearing, grading and filling; nor does it include the installation of streets and/or walkways; nor does it include excavation for a basement, footings, piers, or foundations or the erection of temporary forms; nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure.
Statement of compliance means a notarized statement, from the applicant for any permit issued under this chapter, to the effect that the applicant has received all permits, licenses, or approvals then required by federal law, statute or regulation, including but not limited to, permits issued under the authority of Section 404 of the Federal Water Pollution Control Act Amendments of 1972, or required by or under any statute, rule or regulation of the State of Texas.
Structure means an edifice or building of any kind or piece of work that is artificially built up or composed of parts joined together in a definite manner, including, but not limited to, a modular home, a manufactured home, or a gas or liquid storage tank when such tank is principally located above ground.
Substantial damage means the damage of any origin sustained by a structure for which the cost of repair or restoration of the structure to its before-damaged condition would equal or exceed 50 percent of the market value of the structure. For the purpose of this definition, the market value refers to the value of the structure immediately prior to the damage.
Substantial improvement means any repair, reconstruction, rehabilitation, addition, or other improvement of a structure, the cost of which equals or exceeds 50 percent of the market value of the structure before the start of construction of the improvement. This term shall include a structure that has incurred substantial damage, regardless of the repair work performed. The term shall not include either:
(1) Any project for improvement of a structure to correct existing violations of state or local health, sanitary, or safety code specifications that have been identified by the local code enforcement official and are the minimum necessary to assure safe living conditions; or
(2) Any alteration of a historic structure provided that the alteration will not preclude the structure's continued designation as a historic structure.
Temporary flood damage repair permit means a permit issued to allow limited repairs to and occupancy of a substantially damaged structure based on requirements and conditions promulgated by the city engineer before it is brought into compliance with the provisions of this chapter.
Utilities means all building utilities including, but not limited to, electrical, heating, ductwork, ventilating, plumbing, air-conditioning equipment, water softener equipment, and other service facilities to a building. For purposes of this chapter only, it does not include pool lighting and equipment, sewer cleanouts, sampling well access, interceptor access, landscaping irrigation systems, or any similar items and equipment not servicing a building, or that are otherwise sealed.
Utility construction permit means a permit issued to a developer under chapter 47 of this Code to construct a water or sewer main.
V1 through V30 Zones or VE Zones or V Zones or coastal high hazard area means those areas subject to high velocity waters, including but not limited to, hurricane wave wash or tsunamis.
Variance means a grant of relief to a person from the requirements of this chapter that allows development in a manner otherwise prohibited by this chapter.
Watercourse means any river, channel or stream for which base flood elevations have been identified in the flood insurance study for the city.
X Shaded Zone means areas subject to a 0.2 percent chance of flooding in any given year; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile, and areas protected by levees from 1% annual chance flood.
X Unshaded Zone means areas of minimal flood hazard, outside of the 0.2 percent chance of flood.
(Ord. No. 2018-258, § 2(Exh. A), 4-4-2018)
