Keystone - Retaining Wall Systems
Ecológica Carmelo is proud to be the official manufacturing partner for Keystone’s products in Puerto Rico, the preferred segmental retaining wall system in the Island.
Available Keystone Products
Keystone Standard

Keystone Standard I ® – Straight Split
The Keystone Standard I Straight Split is a commercial retaining wall solution that provides unrivaled structural stability, efficiency, and is designed with sound engineering in mind. It has a totally flat and rough surface or face. From backyard landscaping to large, load-bearing reinforced structures, the product’s styles, colors, and design possibilities are frequently used by architects, engineers, and contractors.

Keystone Standard® – Tri-plane
The Keystone Standard Tri-plane unit is a commercial retaining wall solution that provides unrivaled structural stability, efficiency and is created with sound engineering in mind. It has a partially flat surface, divided into three sections at different angles. From backyard landscaping to large, load-bearing reinforced structures, the Keystone Standard unit’s styles, colors and design are frequently used by architects, engineers and contractors globally.
Size
Series I: | 8”H x 18”W x 21-1/2”D (203 x 475 x 546 mm) |
Coverage per SF: | 1 sf (p/c) 8” x 18” (203 x 457 mm) |
Supporting Documentation
Keystone Compac

Keystone Compac® – Straight Split
Keystone Compac Straight Split features multiple aesthetic options, cost saving versatility and proven wall performance. It has a totally flat and rough surface or face. Installers prefer its lighter weight and shorter tail design (making it easy to handle) and with the added benefit that it uses a Keystone pin connection system. It is trusted by architects, engineers, and contractors.

Keystone Compac® – Tri-plane
Keystone Compac Tri-plane features multiple aesthetic options, cost saving versatility and proven wall performance. It has a partially flat surface, divided into three sections at different angles. Installers prefer its lighter weight and shorter tail design (making it easy to handle) and with the added benefit that it uses a Keystone pin connection system. It is trusted by architects, engineers, and contractors.
Size
18” L x 12”D x 8”H (457 x 305 x 203 mm) | |
Coverage per SF: | 1 sf (p/c) 8” x 18” (203 x 457 mm) |
Supporting Documentation
Cap Units

Straight Split
Size: | 4”H x 18”W x 10 1/2”D (102 x 457 x 267 mm) |
Coverage per SF: | 5 |

Tri-plane
Size: | 4”H x 18″W x 10 1/2″D (102 x 457 x 267 mm) |
Coverage per SF: | 5 |
Keystone Garden Wall

Size
12” x 9” x 4” (305 x 229 x 102 mm) | |
Coverage per SF: | 3 units / 3 unidades |
Supporting Documentation
Keystone Country Manor




Size
Large | 6”H x 16″/14″W x 10″D (152 x 406/355 x 254 mm) |
Medium | 6”H x 12″/10″W x 10″ D (152 x 305/254 x 254 mm) |
Small | 6” H x 6”/4” W x 10″ D (152 x 152/101 x 254 mm) |
Cap Unit | 3”H x 12″/10″W x 11″D (76 x 305/274 x 254mm) |
Coverage per SF
Large | 1.6 sq/ft |
Medium | 2.2 sq/ft |
Small | 4.8 sq/ft |
Coverage per Linear Foot
Cap Unit | .92 |
Supporting Documentation
Keystone Pins

The Keystone interlocking pin system maximizes design options, improves the installation process, and increases the structural integrity of retaining walls. The interlocking pins are also efficient, allow for a near vertical or setback installation, and improve interaction with geosynthetic textiles. Keystone pins are also virtually weatherproof, helping the wall to withstand weather challenges.
To learn more about Keystone pins visit:
https://www.keystonewalls.com/products/miscellaneous/keystone-pins.
Carmelo also has Keystone’s “High Strength Pins” available. For additional information regarding this product please email info@carmelo.com.
FAQ Videos
Keystone’s Design Aids
KeyEstimator™ Spreadsheet (MS Excel)
The KeyEstimator spreadsheet (in MS Excel) helps create an initial estimate of the square feet of wall and caps, soil reinforcement, draining fill, reinforced fill and base leveling pad materials.
KeyWall®PRO Design Software
A design software created to help contractors render potential project spaces and calculate the amount needed for Keystone products. It helps users design or analyze retaining wall systems and soil reinforced wall sections for all Keystone structural units and most common soil reinforcement materials.
You can now purchase the software for $10.00
Purchase the KeyWall PRO Design Software
Keystone Design Manual and KeyWall®PRO Operating Guide
A useful manual with technical and engineering data and procedures to guide users through the Keystone Retaining Wall Units, Geosynthetic Soil Reinforcement, Retaining Wall Design Theory, The Design Process, and KeyWall®PRO Operating Instructions.
Literature: KSDesign_Manual.pdf
Construction Manuals
English - Literature: KSConstructionManual_2020.pdf
Spanish - Literature: KSConstManual_2016-Spanish.pdf
Local design and construction firms with extensive experience in Keystone Retaining Wall Systems
Design and Engineering | Jorge L. Morales, P.E. Telefono: (787) 645-7701 E-Mail: jlm@msedpr.com |
Design and Wall Installation | JM Caribbean Jose R. Muñoz E-Mail: jmunoz@jmcaribbean.com |
Contractor for Installations | LA Interlocking Ledy Saez Telefono: 787-617-3765 / 787-238-5762 E-Mail: Lainterlocking3765@gmail.com |
Frequently Asked Questions
For more information, contact Ecológica Carmelo through WhatsApp at: 787-251-9474
What is the difference between Keystone Compac and Keystone Standard?
The Compac retaining wall units can be used on properly designed and constructed walls that are up to 60 feet high. This unit weighs around 78 pounds. The Standard retaining wall units have greater stability, especially in high walls it can be used in any type of properly designed wall. This unit weighs around 106 pounds.
How can I request a quote for a Keystone Compac or Standard product?
Although we can provide a rough estimate of the costs for Keystone block materials based on the wall dimensions, the quote and final sale of the product requires the person to have a blueprint designed by a licensed engineer. We create your quote when we receive the blueprint for the project designed by the licensed engineer.
Does Ecológica Carmelo also sell the reinforcing mesh for the project?
The reinforcing mesh for the retaining walls is sold and provided by the local Puerto Rican company JM Caribbean by Jose R. Muñoz. For additional information or a quote regarding mesh products please email jmunoz@jmcaribbean.com.
The reinforcing mesh is an essential part of the retaining wall system and its main objective is to stabilize the system against lateral earth loads and seismic activity.
What colors are available for the wall products?
The wall products are only produced in the standard colors of sand and cement to ease production and inventory. If the architect requests a specific color, a 50% deposit and written approval of the tonality of the block are required prior to manufacturing.
Are these segmental retaining walls designed for landslide control?
Segmental retaining walls have all kinds of uses, including land containment, landslide control, and for architectural usage. It should always be designed by a licensed engineer. For additional questions regarding the purpose of products please contact info@carmelo.com.