Los Angeles County Unincorporated, California · General provision

22.44.2060-22.44.2102

Dimensional standards

Servicing

Geographic extent
Areas with low slope stability, high potential for landslide, rockfall, debris flow, wave action, tsunami inundation, and other hazards as identified on LUP Hazards Maps.

Extracted standards

17 individual requirements pulled out of this section’s prose, each with the sentence it came from.

Other

  • Deed restriction for hazard risk

    As a condition of approval, property owner shall execute and record a deed restriction acknowledging and assuming risks and waiving claims against the County.

  • Minimum pseudostatic factor of safety1.1 ratio

    New development proposed on landslides, steep slopes, unstable or weak soils shall be permitted only where a factor of safety of 1.5 (static) and a factor of safety of 1.1 (pseudostatic) can be provided.

  • Minimum static factor of safety1.5 ratio

    New development proposed on landslides, steep slopes, unstable or weak soils shall be permitted only where a factor of safety of 1.5 (static) and a factor of safety of 1.1 (pseudostatic) can be provided.

  • Construction or substantial improvement shall not involve the use of fill for structural support of buildings.

  • Fire-resistant construction requirements

    Structures shall be constructed with appropriate features and building materials, including fire-resistant exterior materials, windows and roofing; and eaves and vents that resist the intrusion of flame and burning embers.

  • Flood openings for enclosed areas below lowest floor

    All fully enclosed areas below the lowest floor subject to flooding shall have at least two openings no more than one foot above grade with a total net area of at least one square inch per square foot of flooded area.

  • Allowed uses in floodway

    Open recreation uses, such as public parks; other uses that do not cause cumulative increase in water surface elevation of base flood more than one foot; bridges consistent with subsection A.3 of Section 22.44.1340.

  • Horizontal seismic coefficient for pseudostatic analysis0.15 g

    The effects of earthquakes on slope stability may be addressed through pseudostatic slope analyses assuming a horizontal seismic coefficient of 0.15g.

  • Indemnification for wildfire hazard

    Property owner shall submit a signed document indemnifying the County against liability arising from wildfire hazards.

  • Maximum permanent displacement50 mm

    Seismic analyses may be performed by the pseudostatic method, but in any case shall demonstrate a permanent displacement of less than 50 mm.

  • For mobile or manufactured homes, the structure shall be elevated on a permanent foundation such that the lowest floor is at least one (1) foot above the base flood elevation.

  • Non-residential lowest floor elevation

    For non-residential structures, the lowest floor (including basement) shall be elevated to or above the base flood level.

  • Pilings elevation requirement

    New construction or substantial improvements shall be elevated on pilings or columns such that the bottom of the lowest horizontal structural member is at or above the base flood elevation.

  • Residential lowest floor elevation above base flood elevation1 ft

    For residential structures in Zones A, AE, or AH on a FIRM, the lowest floor (including basement) shall be elevated at least one (1) foot above the base flood elevation.

  • Swimming pool double-wall construction

    All swimming pools shall contain double-wall construction with drains and leak detection systems capable of sensing a leak of the inner wall.

  • Tsunami lateral resistance

    Development shall be constructed to resist lateral movement due to the effect of water loading from the maximum expected tsunami, to the greatest extent feasible.

  • Zone AO lowest floor elevation

    For structures in Zone AO, the lowest floor shall be elevated at least one foot above the depth number indicated on the FIRM; or if no depth number, at least three feet above the highest adjacent grade.

From the ordinance

The provisions of the Hazard Area shall apply to areas with low slope stability, wave action, tsunamis, etc. Development shall comply with hazards evaluation and development standards.
22.44.2060-22.44.2102