PISA SMOOTH™ | Unilock Contractors
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CLIFFSIDE GREY
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Pisa Smooth is a new segmental retaining wall system providing a linear modern 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 (slight lean) retaining, or completely vertical orientation, 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.
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Shape and size

CORNER
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

CORNER
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

CORNER
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

CORNER
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

STANDARD
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

STANDARD
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

STANDARD
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

STANDARD
550mm x 85mm x 275mm
21 3/4" x 3 3/8" x 10 7/8"

Technologies
Applications
Fire Features
Garden Walls
Outdoor Kitchen
Structural Wall
Water Features
Recommended Equipment
Retaining Wall Clamp
Technical information
  • Packaging
  • Things to know
  • Cross Sections
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Packaging
  • Packaging
  • Things to know
  • Cross Sections
COPING CORNER STANDARD
Layers per Bundle666
Per Bundle Section224
Soldier LnFt Per Section32.4964.9521.66
Lin Ft per Bundle - Soldier64.98129.986.64
Units Per Section182412
Units per Bundle364848
Units per Layer688
Units per FcFt1.991.321.99
Lbs per Layer460.5480385.08
Lbs Per Section1381.51440577.63
Lbs per Bundle276328802310.5
Lbs per Unit76.756048.14
Lin Ft per Layer - Soldier10.8321.6514.44
Lin Ft per Unit - Soldier1.812.711.81
FcFt per Layer3.026.044.03
FcFt per Bundle18.1236.2424.18
FcFt per Unit0.50.760.5
THINGS TO KNOW

PISA SMOOTH™

Applications – Design and build projects such as planters, steps, grill islands, pillars, seat walls and water features. Can be used for straight and curved installations (Radius 5’ is the tightest radius).

Capacity – Gravity walls up to 24” (1m). Geogrid reinforced walls can be built higher with engineering from a professional engineer.

Recommended Base Stabilization – one layer of DriveGrid™ stabilization grid between subgrade and base material. Use under Standard Base or Permeable Base.

Standard Base – Min. 6” – 8” of ¾” Crusher Run gravel (any road base standard in accordance with ASTM-D2940) compacted to 98% Standard Proctor Density (SPD).

Alternative Permeable Base – Min. 6” – 8” of ¾“ clear open-graded stone compacted to achieve full particle lock-up and consolidation. (Clear open-graded does not compact but does consolidate slightly by rattling the particles together.)

Leveling – Leveling retaining wall blocks directly on top of gravel is tedious and generally does not yield the best results. U-Grip Base units or universal base pads are recommended under all Unilock walls for improved accuracy and speedier installation.  Additional benefits include long term structural integrity and an overall better appearance.  Poured concrete leveling pads, reinforced with rebar, are also a great way to accomplish leveling, particularly for larger installations. You must ensure that the concrete is poured and finished perfectly in order to achieve a good visual appearance. 

Connection – features a tongue and groove connection between layers. Use appropriate concrete adhesive for connection between units where the key has been removed or for corners. Always read adhesive manufacturers’ directions prior to gluing.

Handling – Avoid bumping units against each other to prevent chipping.

Coping - This wall requires coping. Choose a manufactured coping such as Pisa Coping, Universal Coping or any of our natural stone coping options. Install with tight joints or 3/16” gap between units and amend with an exterior latex caulking. Cutting may be required; a diamond blade saw is required to cut coping properly. Glue all coping using a specially formulated concrete adhesive that is strong and will not break down over time. Always read adhesive manufacturers’ directions prior to gluing.

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HERE'S WHAT
CONTRACTORS ARE
SAYING
Why Unilock products are top tier

Dave Caroselli from Shearer Patio & Landscape Services explains why being creative in the hardscape industry is something that he enjoys and why he feels that Unilock product is top tier in the industry. He also talks about how the UniLyft system has helped him efficiently complete a project with speed and precision.

Dave Caroselli
Shearer Patio & Landscape Services
Unilock products and service – best in the industry

Leon Raber from Creative Hardscapes talks about the quality and innovation of the Unilock product, and the wide range of color tones available. He also explains how he is most impressed with the contractor service provided by Unilock, and how the support makes him feel like family.

Leon Raber
Creative Hardscapes
Tournoux Landcare on why they choose Unilock

Zack Tournoux, one of the owners of Tournoux Landcare Service, shares why they love Unilock paving stones and walls: Top tier products, exceptional catalog (magazine), great working relationship with Territory Manager.

Zack Tournoux
Tournoux Landcare Service
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