Theses Dissertations And Cap Stones For Retaining Walls

Who else is using

You'll find Redi-Rock walls at hospitals, schools, shopping centers, sports complexes, neighborhood storm corridors, marinas, and tons of other locations. 

Take a look at what these people are saying about their Redi-Rock retaining walls.

"These blocks solved the engineering problem, they had the aesthetics the homeowners wanted, and they were easy to install."

Torgen Erickson, PE
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"We have found in the past on similar projects that the smaller retaining wall blocks just won't handle the velocity of the water."

Bill Robinson P.E.
City of Tulsa
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Residential / Commercial

VERSA-LOK offers eight attractive segmental retaining wall systems equally suited for residential, commercial and public works applications: Standard, Accent, Cobble, Mosaic, Square Foot, Ultra, Nexus and VERSA-Green, a plantable retaining wall system that becomes a living part of your landscape.

Since 1987, VERSA-LOK has been creating “Solid Solutions” for architects and engineers with the industry’s original solid, top-pinning segmental retaining wall system. Our low-absorption, high-strength, solid concrete units provide not only the long-lasting durability engineers expect, but also the limitless number of design options architects demand.

Create curves, corners, stairs, columns and freestanding walls using Standard, Cobble or Accent VERSA-LOK units, or combine the three to form the random-pattern Mosaic Retaining Wall System. VERSA-LOK wall units are available in the classic split-face texture at all locations and in the vintage Weathered texture at select locations. These products all work with VERSA-LOK cap units.



Our original, most popular unit, the Standard unit is the backbone of VERSA-LOK retaining wall systems. The unit's solid construction and unique pinning system provide an endless array of design options, hardcore durability and the fastest, easiest installation available. Not only straight retaining walls, but also curves, corners, columns, stairs and freestanding walls are possible with the Standard unit, making it a universal favorite among homeowners, contractors and landscape architects and designers alike.  This all-purpose retaining wall block also is available a Weathered texture option at selected dealers.


Create eye-catching designs by combining VERSA-LOK Standard, Cobble and Accent units to form the random-patterned Mosaic Retaining Wall System. Attractive and durable, the Mosaic system uses a four-unit panel (10" x 24")—consisting of one Standard, one Cobble and two Accent units—giving each wall an interesting and visually arresting look and feel. Although they can create seemingly complex patterns, the simple four-unit Mosaic panels are just as easy to install as our Standard, Cobble or Accent Retaining Wall Systems.


About half the size of the VERSA-LOK Standard wall block, Cobble units are perfect for planters, small walls and countless garden-variety projects. Smaller and conveniently lighter than its big brother Standard unit, versatile Cobble wall units retain the same top-down pinning system, saving you time and installation costs.


A slimmed-down version of the Standard wall unit, Accent units measure 4 inches tall by 12 inches wide. They're lighter than Standard units, but engineered with the same high-strength, low-absorption concrete. Easily installed, Accent units draw minimal attention to the wall, saving the spotlight for pools, gardens, and other features of the surrounding landscape.

Cap Units

Cap units can put the finishing touch on your VERSA-LOK retaining wall. They're available in two styles–A and B–and are 3-5/8" tall by 14" wide (at the face). Caps can be used with all types of designs. For straight walls, use both caps alternately. Outside curves require A caps only while inside curves use B caps.

Square Foot

Square Foot is a premium cored unit that covers a full square foot of wall face economically, making it a low-cost alternative for some commercial applications. Its trapezoidal shape and top-pinning system allow for variable bond construction, accurate alignment, tighter vertical joints and easy installation. Square Foot’s unique design enables a near-vertical setback, and its thick face affords greater durability than other cored systems.


The VERSA-LOK Ultra retaining wall system offers VERSA-LOK's renowned durability and stunning looks in a lighter weight unit that opens up a new world of design options, either on its own or in combination with other VERSA-LOK units. Its six-inch height makes it easy to integrate with Standard, Cobble, and Accent units.


When you need to retain a lot of ground economically, the VERSA-LOK Nexus® retaining wall system can meet your project’s design specs and budget and create a great-looking retaining wall. The top-stud design readily accommodates a variable bond, so you can create walls that have a more natural appearance.


The VERSA-LOK® Harmony™ retaining wall system uses Standard and Cobble wall units to create designs limited only by your imagination. Combine the units in countless ways to create a variety of natural-looking designs. At half the width and the same height as Standard units, Cobble units can be set randomly among Standard units or the two types of unit can be set in a repeating ratio.

Plantable Wall Systems


The new VERSA-Green® Plantable Wall System combines the durability and strength of a VERSA-LOK segmental retaining wall with the lush beauty of a hanging garden. Inside each unit is a 6"-deep plantable core for planting and a groove in the top to accommodate irrigation tubing. The result is a functional wall that becomes a living part of your landscape.

Specialty Commercial

In addition to our line of traditional segmental retaining wall systems for residential and commercial applications, VERSA-LOK also produces Brute and Bronco, two products specially designed for select large-scale commercial or agency projects. Brute and Bronco are manufactured to the same industry-exceeding standards as our other products.


The massive size of VERSA-LOK Brute—240 pounds and 1-1/3 square feet face area—makes it the ideal solid solution for unreinforced walls to 8 feet; limited-access sites; sites where extensive excavation isn’t possible or practical; vertical retaining walls; walls subject to impact; or shoreline applications. Brute is installed mechanically in pairs using a special clamp attached to a backhoe or other lifting device and employs VERSA-LOK’s top-pinning design for quick unit alignment and construction versatility. Brute is only offered in certain regions—contact your local VERSA-LOK dealer for availability.


When you’ve got a landscaping job that requires a colossal-size segmental retaining wall (SRW), call for Bronco. Weighing in at 4,500 pounds and displaying 14 square feet of face area, Bronco has the heft and coverage to tackle any job you can throw at it. The heavyweight system builds walls up to 10 feet tall without soil reinforcement, making it ideal for projects with excavation constraints. And with a unique four-panel, natural-stone appearance, Bronco is the most attractive random-pattern large-block SRW system available.

Bronco II

When you’ve got a project that requires a heavy-duty retaining wall, call for Bronco II, the new heavyweight segmental wall system from VERSA-LOK. Weighing in from 1,225 to 3,215 pounds and displaying 6 square feet of face area and a 3.2° batter, Bronco II has the heft and coverage to tackle any job. Alignment knobs molded into the top of units and channels molded into the bottom ensure correct near-vertical positioning and allow for tight joints with variable-bond construction.



The VERSA-Lifter makes it easier to lift and place units, especially on the base course. The two prongs on the lifter are placed into the holes in the VERSA-LOK unit. The action of lifting the handle secures the lifter to the unit and makes for easy, balanced lifting and placement. VERSA-Lifter are available from your local supplier.


VERSA-LOK Fabric is ideal for soil reinforcement of shorter walls. This geotextile is both cost-effective and easy to install. It is available in convenient, ready-to-use roll sizes.


Building a wall that needs geogrid to reinforce the soil and stabilize your wall?

Engineered for durability and long life, VERSA-Grid® geogrid is a high-performance soil reinforcement composed of high-molecular-weight, woven polyester yarns with a polymeric coating. Properly designed VERSA-LOK walls with VERSA-Grid soil reinforcement can be constructed to heights of 50 feet or more.

VERSA-LOK® Concrete Adhesive

A single-component, non-sag elastomer, VERSA-LOK Concrete Adhesive is designed for use in non-traffic bearing joints, including those where structural movement or stress is expected. Each VERSA-LOK Concrete Adhesive cartridge contains enough adhesive to cap approximately 14 lineal feet of wall.


VERSA-LOK’s original, solid pinning system provides a mechanical interlock between retaining wall units and a mechanical connection to geogrid .all Systems. 

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