Pisa Smooth™ - Available In

Private Residence<br>Product: Pisa Smooth™ in Granite Blend
Private Residence<br>Product: Pisa Smooth™ in Granite Blend
Pisa Smooth is a modern update on a landscape classic adding a contemporary aesthetic to any landscape project. The ideally sized block provides fast, efficient installation, with great contractor friendly features. Pisa Smooth features the ability for both battered or vertical retaining, for a versatile range of installation options. Easily create garden or large retaining walls, two-sided seat walls, pillars, planters or almost any other vertical element.


Cliffside Grey

Cliffside Grey

Granite Blend

Granite Blend

Special Order Colors
Irish Coast

Irish Coast

Sandy Beach

Sandy Beach

Minimum quantities and special pricing may apply. Contact us for more details.

Custom Options

Custom Colors and Finishes
With so many different options for customization we ask that you contact your local Unilock Representative for more information about customizing this product.
Minimum quantities will apply.

Shapes & Sizes

Pisa Smooth™ Standard Unit


55 cm x 27.5 cm x 8.5 cm

21.625" x 10.875" x 3.375"

Pisa Smooth™ Corner


55 cm x 27.5 cm x 8.5 cm

21.625" x 10.875" x 3.375"

Pisa Smooth™ Coping


55 cm x 35 cm x 8.5 cm

21.625" x 13.75" x 3.375"

U-Grip™ Base Pad

48.2 cm x 35.5 cm x 5.5 cm

19" x 14" x 2.125"


Garden Wall
Retaining Wall
Seat Wall
Surface Texture


Face Feet Per Linear Feet Per Units Per Per Bundle Lbs Per
Stones & Bundling Bundle Unit Bundle Unit Bundle Face Feet Layers Sections Unit Bundle
Standard Unit 24.18 0.503 86.61 1.79 48 6 1 48.14 2311
Corner Unit 24.18 0.503 129.92 1.79 48 6 1 60 2880
Coping Unit 18.12 0.503 64.96 1.79 36 6 1 76.74 2763
U-Grip Base Unit 85.39 1.581 54 9 46 2500

Notes: Sold in full bundles or sections only. For custom options, please contact your Unilock Territory Manager.


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Important Information

Handling & Installation – Maximum height – 36" (under optimum conditions) but can be engineered for walls that require to be higher. Higher walls can be achieved using geogrid reinforcement. Tapered units will allow for a minimum 5ft. outside radius. Automatic setback is ¾" per row. Engineering services are available. Contact your Unilock representative for further information.

Want help calculating your order?
Use our interactive paver calculator to get quick, easy and accurate specifications for your project!

Paver Calculator


ASTM C 1372 Standard Specifications for Dry-Cast Segmental Retaining Wall Units

Unilock meets and exceeds:

  • C140 for Absorption and Compressive Strength > 3000 PSI
  • C1262 for Freeze Thaw Durability <1% mass loss
  • C1372 Overall dimensional variations permissable for width, height and length ± 1/8” (±3.2mm)
  • NCMA Zone 3 Recommendations for de-icing salt exposure with Compressive Strength >5500 psi

Test results available upon request



Materials & Resources: LEED V4:

Building Product Disclosure and Optimization

Sourcing of Raw Materials – Sourcing of Raw Materials and Extraction • 1 point

Sourcing of Raw Materials – Leadership Extraction Practices • 1 point

Material Ingredient Reporting – Material Ingredient Reporting • 1 point

Material Ingredient Reporting – Material Ingredient Optimization • 1 point


If required, summary test data shall be provided with the SRW Design and shall include:

a)SRW Unit shear strength as per ASTM D6916

b)SRW Unit – Geosynthetic Reinforcement connection strength as per ASTM D6638



Pisa Smooth™ HPD

Specification  – Non-Engineered Wall

Specification – Engineered Wall


For more information on specifications for Pisa Smooth™, contact your local Unilock representative.

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