CONCRETE BLOCK WALL|RETAINING WALLS CONSTRUCTION:CITY OF THOUSAND OAKS

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»» Retaining Wall Permit Requirements City of Thousand Oaks

Retaining wall is a wall constructed to hold back earth.

Retaining wall is a wall constructed to hold back earth, usually on a slope or hillside. Wall that receives a lateral load or pressure, such as water pressure on a coffer-dam is also a retaining wall.

Concrete Block Retaition-retained wall figure

Wall constructed to hold in place a mass of earth or prevent the erosion of an embankment. Retaining walls that we built in Ventura county are built of concrete with rebar’s, block walls or cinder block walls are built using CMU, rebar, concrete, gravel, drain system and waterproof materials, this type of wall is sometimes referred as “French wall” (SEE IMAGE). In the City of Thousand Oaks the requirement for building a retaining wall is very specific, but there are some limitations of when ,what or how a concrete or block retaining wall will be needing a construction permit in Thousand Oaks City.

Normally when submitting or requesting a retaining wall permit for the City of Thousand Oaks you will need to have prepared a working blueprint or block wall construction plan that includes:

Figure 1 Block Wall in Slope Max. Height
Figure 2 Block Wall Min. Requirements
Figure 3 Block Wall Required Dimensions
Figure 4 Block Wall Footing Details
Figure 5 Block Wall With Set-backs
Figure 6 Block Wall for Thousand Oaks
Figure 7 Block Wall Rebars Requirements
plot plan sections
construction details
excavation details
footing sizes and specifications
address of the property and owners name
north arrow on the plot plan
identification of the drawing’s scale
property lines
dimensions lot size
access location and adjacent streets
identification of specific works
proposed work and existing conditions of structures involved
dimensions showing front, side, rear
setback
Locations of drives, road, etc.
for sloped areas shows ground elevations
distance between all existing and proposed structures
distance to top toe of existing and proposed structures
location of existing property lines, wall, fences
location of any existing septic tanks
label all existing and proposed structures on plot plan
plot plan required for any type of construction such as new or renovation or additions
shows existing an distance from any pools
shows general notes: psi of concrete to be used, block sizes and types, footing depth, rebar sizes, mortar specifications, grout specifications an type, drainage system to be used, material for drainages
Max. retaining wall height must be (if no engineer involved) 4’-0”
minimum depth of footing shall be 30”
specify your documents and match the design of your new retaining wall for the City of Thousand according to the 4 different layout provided by the City of Thousand Oaks such as, Retaining wall located at the bottom of the a slope, retaining wall level grade behind wall located at the bottom of the wall, retaining wall required a permit located at the bottom of a slope or/and retaining wall located on a slope.

City of Thousand Oaks Retaining Wall Permit Requirements

1-Retaining wall with 18” max. Retained height located at the bottom of a slope.
Building permit is not required. Planning and Public Works Department approval may be required.City retaining wall standard can be used. See Figure 1.

2- Retaining wall with 3’-0” max. Retained height and 3’-0” min. of level grade behind wall located at the bottom of a slope.
Building permit is not required. Planning and Public Works Department approval may be required. City retaining wall standard can be used. See Figure 2 and Figure 3.

3- Retaining wall requiring permit located at the bottom of a slope.
Building permit is required if retained height is greater than 3’-0” for level grade or 18” for slopping grade. Planning, Public Works and Building Department approval is required. City retaining wall standard can be used up to 4’-0” retained height. Engineering calculations and details (Wet stamped and signed) are required for retained height over 4’-0”. See Figure 4 and Figure 5.

4- Retaining wall located on a slope
Building permit is required regardless of retained height.
Planning, Public Works and Building Department approval is required. Engineering calculations and details (wet stamped and signed) are required. Letter from a licensed geotechnical engineer, stating that the design is “safe for its intended use”, and indicating the required daylight setback, must be submitted to the Building Division prior to issuance of permit. Plans and details must be we stamped and signed by the geotechnical engineer. See Figure 6 and Figure 7.

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Slope

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Detail

Rebars

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»» Block Wall Products Available

Pavestone Natural Impressions Flagstone Charcoal Tan 12 In. x 4 In. Retaining Wall
Pavestone 12 In. x 8 In. Retaining Wall Block,Tan
Pavestone Red Charcoal 12 In. x 8 In. Retaining Wall Block
Pavestone Natural Impressions Charcoal Tan 12 In. x 4 In. Retaining Wall Cap
6 In. x 16 In. Retaining Wall Block - Tan
Pavestone Tan 16 In. x 8 In. Retaining Wall Block
4 In. x 8 In. Borderstone Retaining Wall Block - Red / Charcoal
12 In. Retaining Wall Block, Charcoal
Pavestone Charcoal 12 In. x 8 In. Retaining Wall Block
Pavestone Holland Sand Brown Charcoal 7.81 In. x 3.88 In. Paver
PAVESTONE Venetian, Sierra Blend 8.14 In. x 5.44 In. 60mm Paver
PAVESTONE Venetian, Sierra Blend 5.44 In. x 5.44 In. 60mm Paver
MS International 18 In. x 18 In. Charcoal Rust Slate Column Kit with Hand Cut Cap
MS International 18 In. x 18 In. Santa Barbara Gold Column Kit with Hand Cut Cap
MS International 18 In. x 18 In. Arctic White Slate Column Kit with Hand Cut Cap
8"L x 4"W Red/Charcoal Holland Paver •Traditional brick shape gives classic, timeless look •Creates a variety of popular patterns like the herringbone and basketweave •Use in conjunction with other products to create a soldier course •Ideal for patio overlays, patios, walkways
12"L Tan Castle Wall
*Traditional, classic look •*Back lip assists with alignment for easy installation *Easily creates straight and curved walls *Ideal for small retaining walls, raised flower beds, garden walls
12"L x 12"W Gray Stepping Stone
*Simple design and shape fits together well *Simple, clean design *Economical option *Ideal for trash can pads, shed floor, grill areas
9"L x 6"W Tan/Charcoal Countryside Paver
*Textured, antiqued pavers create naturally worn look *Use with 6x6 Countryside pavers to create random patterns *Available in earthtone blends *Ideal for patio overlays, patios, walkways *Easy to install *Near Maintenance-free *Permanent weather resistant colors *Environmentally friendly
12"L Gray Castle Wall
*Traditional, classic look *Back lip assists with alignment for easy installation *Easily creates straight and curved walls *Ideal for small retaining walls, raised flower beds, garden walls
12"L x 12"W Red Paver
*Simple design and shape fits together well *Simple, clean design *Economical option *Ideal for trash can pads, shed floor, grill areas *Easy to install *Near Maintenance-free *Permanent weather resistant colors *Environmentally friendly
Oldcastle 16" Tan Rampart Wall
Oldcastle 12"L Tan/Charcoal Chisel Wall

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BuenaHomes Construction is Located in Oxnard California. P.O. Box 7315
Oxnard,CA 93031 Phone: 805-844-3175
Email: BuenaHomes@Gmail.Com
Lic. 825805
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