Retaining Walls

General

All patios and pool decks should include at least 1 row of retaining wall around the perimeter

Need minimum of 6’ of space for geogrid. For instance you can’t have a Stonegate retaining wall less than 6’ away from the pool. The pool will interfere with the geogrid.

Easton wall block can not be used for retaining walls

We need engineering and a building permit for retaining walls 3' and higher

Details

Rows of wall blocks

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Keystone Retaining Wall Drainage Detail

Need 4’ minimum for geogrid. 5’ is ideal

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CMU Retaining Wall

Engineering Details

Follow drainage specifications

Reference engineering details for footer heel width and distance that footer extends beyond the retaining wall

Half a course min. to be buried.

Footings for CMU Retaining Walls should ALWAYS be a minimum of 4” below grade (anywhere between 4"-8" below grade), increments of 4" since that is half of a CMU block.

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Retaining Wall Cross Section & Table.jpg

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Plans for Design Guides

Any project with CMU walls needs to have three pages in the design guide outlining the wall components; one for footer details, one for rebar details, and one for CMU course details. The chart below should be added to every page regarding the CMU walls. The Layout version of this chart can be found in the document linked below as well. Walls taller than 4’-0” will require an amended chart.

Provide elevations to top of block walls and elevations to the top of the concrete footing on Design Guide

Provide Footing Layout/Placement & Footing Elevations on Design Guide. See examples of Justin Dennis and Mahony below.

Link to Example Layout Doc:

https://www.dropbox.com/s/2egxrct389khq2p/CMU%20Retaining%20Wall%20Example.layout?dl=0⁠

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Example Pages

Example Pages

There are no rows in this table

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Reference Material

Common Wall Construction Details

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Duval County Letter

regarding when engineering or a permit is needed for retaining walls or masonry walls

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