PISA™ EDGE | Unilock Contractors
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PisaEdge stands out as a versatile segmental retaining wall system that delivers a clean, sophisticated look suitable for a range of residential and commercial projects, both large and small in scale. Featuring a built-in tongue and groove system, it enables the creation of battered or vertical retaining walls, as well as garden walls, raised patios, and planters. The user-friendly design allows for easy handling and placement either by hand or using UniLyft, offering an efficient and cost-effective solution for your retaining wall requirements.
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COPING
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING CLOSED END
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING CLOSED END
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING CLOSED END
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING CLOSED END
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

STANDARD
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

CORNER
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

STANDARD
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

CORNER
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

STANDARD
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

CORNER
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

STANDARD
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

CORNER
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

COPING CLOSED END
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

STANDARD
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

CORNER
450mm x 90mm x 260mm
17 3/4" x 3 5/8" x 10 1/4"

Technologies
Applications
Coping
Fire Feature e1632317154571
Fire Features
Garden Wall e1632317150577
Garden Walls
Non structural Wall
Outdoor Kitchen e1632317137972
Outdoor Kitchen
Pillar e1632317122239
Pillars
Water Feature e1632317028508
Water Features
Technical information
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  • Things to know
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Packaging
  • Packaging
  • Things to know
Unit Thickness (mm)
Layers per Bundle
FcFt per Bundle
FcFt per Layer
FcFt per Unit
Units per Bundle
Units per Layer
Lbs per Bundle
Lbs per Layer
Lbs per Unit
(90) COPING Random Bundle
90
6
20.93
3.49
0.44
48
8
2,488.59
414.76
51.85
(90) STANDARD/CORNER Random Bundle
90
6
20.93
3.49
0.44
48
8
2,488.59
414.76
51.85
THINGS TO KNOW

PISA™ EDGE

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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