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Click Here For the Step By Step Instructions
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What is a Verdura® 30 retaining wall system?
This system combines Verdura® 30 plantable retaining wall blocks & Posi-Dura™ geosynthetic fabric to allow the construction of a wall (reinforced earthen buttress) from 3 to 8 feet in height. An embedment using the same blocks, bu no poured concrete foundation, is necessary. When constructing a wall, based on the Verdura® Retaining Wall Standard Design, you can place block & the reinforcement (Posi-Dura™ geosynthetic fabric) at the same time as backfill. In most cases, a simple drainage system can be used. The design & construction of your Verdura® retaining wall will vary depending upon soil type, slope, & wall dimensions. Here's a good sample project that you can use to better understand the process.
Design Factors |
Examples |
| Uniform Building Code Class of Soil |
Class 4 - (SW, SP, SM, SC, GM, & GC - sand, silty sand, clayey sand, silty gravel & clayey gravel) |
Wall Height*
*including embedment |
8 feet |
Wall Area*
*includuing embedment |
50 feet long x 8 feet high = 400 square feet (s.f.) |
| Number of Blocks = Wall Area (length x height) / area covered by block |
400 s.f. / 1.25 s.f. = 320 blocks |
| Slope Geometry |
level bottom, level top |
| Back Drainage |
50 linear feet (as specified in Standard Design) |
| Posi-Dura® Reinforcement Tail Length |
6.5 feet |
| Approximate Number of Tails = Number of Blocks / 3 |
320 / 3 = 106 |
Here's what you'll need to get started:
- Verdura® 30 Retaining Wall Standard Design
- Determine slope geomtry, maximum wall height & wall area
- Obtain classification of site soils by qualified geotechnical (soils) engineer - this individual can also be retained for soil compaction testing & inspection during construction
- Develop a site plan of your property, identifying proposed elevation & location of the Verdura® 30 retaining wall(s)
- Select a Standard Design for your Verdura®30 retaining wall based upon your site conditions.
- Apply for any necessary permits from your local building authority, using your site plan & Standard Design.
Wall Materials |
Drainage Materials |
Equipment & Tools |
- Verdura® 30 Retaining Wall Blocks
- Posi-Dura™ Geosynthetic Reinforcing Fabric
- Posi-Dura™ Pre-cut PVC pipe
- Planting soil
- Board - 6 ft long 2 X 4 (for rod boarding)
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- Gravel - 3/4"
- Perforated & solid PVC draingage pipe - 4"
- PVC fittings & PVC Glue
- Drainage Filter Fabric
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- Mechanical soil compactor
- Excavator or shovel
- Front-end loader or wheelbarrow
- Scissors or utility knife
- Tamper
- Hammer
- Leveling stakes
- String Line
- Saw
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Click Here For the Step By Step Instructions
Printable Brochure
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