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Anchor Retaining Walls, Anchor Diamond Pro block

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Minneapolis, MN . . . Estimating and installing retaining walls is easy with Anchor Wall Systems Diamond Pro™ retaining wall block. The face of each block covers a full square-foot, making it a cost-effective system for large commercial, municipal and residential projects.

Flexible Retaining Wall Solutions

The Anchor Diamond Pro combines the advantages of the renowned Anchor Diamond® block with greater square footage per unit and a 1-inch, or 7-degree setback. Anchor Wall Systems offers this block system for architects, engineers, specifiers and contractors to create flexible retaining wall solutions for larger projects.

Anchor Diamond Pro blocks feature an integral rear lip for quick, easy installation, which eliminates guesswork and reduces labor costs to deliver a quick, uniform setback with no pins, clips or mortar. The low-maintenance blocks are available in a variety of design options including warm earthtone colors and natural, rock face textures.

Four Block Styles
The Anchor Diamond Pro is available in two face styles and has two accessory units for creative applications of steps, inside and outside curves, 90 degree corners and terraced walls. Available in three-way beveled and straight face styles and with optional cap or step units, Diamond Pro blocks offer more unique possibilities to traditional retaining wall materials.
Beveled Unit: The beveled unit features a three-way face style and stands eight inches high by 18 inches wide by 12 inches or one foot deep. It weighs approximately 72 pounds and covers one square foot. The batter is seven degrees.

Straight Unit: The straight unit features a traditionally-styled straight face and is eight inches high by 18 inches wide by 12 inches or one foot deep. It weighs approximately 74 pounds, covering one square foot. The batter is seven degrees.

Cap Unit:
The optional Diamond Pro cap unit provides a finished look for retaining wall projects. The block stands four inches high by 17-and-a quarter inches wide by 10 inches deep. It weighs approximately 40 pounds.

Corner Unit: The optional corner unit is ideal for building and landscaping projects with 90 degree inside and outside corners. This unit is eight inches high by 18 inches wide by nine inches deep. It weighs approximately 101 pounds.

No Reinforcement Needed to Three-and-a-Half Feet
Anchor Diamond Pro walls can be built up to 3 1/2 feet exposed height without geosynthetic reinforcement, or climb to limitless heights with professional engineering and geosynthetic reinforcement.

Based in Minneapolis, Minnesota, U.S.A., Anchor Wall Systems designs and licenses flexible, cost-effective, high-quality concrete retaining wall solutions for a wide variety of commercial, municipal and residential landscaping applications worldwide. The company's Anchor Diamond®, Anchor Diamond Pro™, Anchor Vertica®, Anchor Vertica Pro®, Anchor Windsor Stone®, Anchor Sahara Stone® and Anchor Border Stone™ brand retaining wall products are supplied by 45 authorized manufacturer licensees in the United States, Canada, Australia, New Zealand, Japan, the Philippines, Republic of Fiji, China, South Korea, England, Sweden, Northern Ireland, South America, and Portugal. For more information about Anchor products and for the name of a dealer near you, contact Anchor Wall Systems at 1-877-295-5415 or visit

 How to build a retaining wall with Anchor Diamond Pro Block
Information provided by Anchor,

Stake out/remove sod

Begin by staking out the wall. For curved sections, use a garden hose to lay out the wall line. Dig a trench along this line. The width of the trench should be twice the depth (front to back) of the block used. If block is 8 inches deep, make trench 16 inches wide. When using one, two or three courses of block, make the trench deep enough to bury half of the first course plus 2 inches of compacted base material. When using four or five courses of block, make the trench deep enough to bury the full first course plus 2 inches of base material. When using six or more courses of block, bury the full first course plus 4 inches of base material.

Add base material

Remove loose soil and firmly compact the soil in the bottom of the trench with the tamper. Then place base material in the bottom of the trench. Base material can be paver base or an equivalent to ¾-inch minus (with fines) aggregate. Use the appropriate amount of base material for the number of courses you are building.

Level and compact base

Add a 2-inch layer of base material, rake out and firmly compact with tamper. Level the surface from front to back and side to side. Check with a carpenter’s level, checking level every few feet. The more level the base material, the easier it is to level the block. Add another 2 inches of base if needed for the height of the wall (see Step 1).

Lay and level block

Use a hammer and chisel to remove the rear lips from all blocks used for the base course. Use string to align the back edges of the first course. Position the wall units side by side on the prepared base so that front edges touch. Level block in both directions. Check individual units as installed and check units with each other as you install wall. Begin next course by laying a block with the rear lip down and pulling it forward until the lip is securely in contact with the units below. Assemble additional courses by placing units in a staggered relationship to the course beneath running bond.  

Backfill wall

Fill behind each course with drainage aggregate (such as ¾-inch free draining) that extends 6 inches behind the wall. Compact aggregate with tamper. Organic soil or clay-type soil is not recommended for backfill material.

Cut block

To make all blocks fit, you may need to cut wall blocks. Use a circular saw with a masonry blade to cut blocks and caps from the top. Read and understand the operating manual before using a saw.

90° Corner:

For some products, you will need to use a circular saw with a masonry blade. Cut a 45-degree angle on two blocks. Cut from the front corner to the back of the block. Glue pieces together with construction adhesive so two block faces form the finished outside corner.

Mark and cut caps

For capping curves, trim caps to follow the wall radius. Place a cap at the beginning of the curve. Skip a space and place the next cap in the third position. Rest a cap on the top of the original two, aligning its face with the face of the wall. Mark the bottom of the cap along the edges. Use a circular saw with a masonry blade to cut the marked cap. Place the cap. On a 90-degree corner wall, the caps need to be saw-cut to achieve a 45-degree mitered corner. At the end of the wall, cut the cap so the manufactured edge is exposed and the cut edge is against the next cap.

Glue caps

Use an exterior concrete construction adhesive to secure the caps.


Product Overview

Maximum Gravity Wall Height: 3' 4"
System Batter: 7.1°
Minimum Inside Radius: 4'
Minimum Outside Radius: 2'
This product can be used for the following types of projects:
Straight Wall Curved Wall Terraced Wall Corner Steps 

Wall Units

Diamond Pro® Beveled Face Wall Unit


Front Height:
Front Length:
Front Depth:

72 lbs.
1 sf


Diamond Pro® Cap


Front Height:
Front Length:
Front Depth:

Back Length:

40 lbs.
1.22 lf

Diamond Pro® Corner


Front Height:
Front Length:
Front Depth:

Back Length:


 Revised: June 11, 2009 crt