Natural Collection

The Tandem® Retaining Wall system designed by Belgard® provides the appearance of natural stone that will complement any commercial hardscape. The versatile Tandem wall system can be used to create attractive, curved, or straight retaining and freestanding walls.


Ashlar Tandem

7 x 13 3/16 x 2 5/8
7 x 15 13/16 x 2 5/8
7 x 18 7/16 x 2 5/8

Tandem Cap

3 ¼ x 24 x 15

Polypropylene Connector


Blended Colors


Technical Resources

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Tandem Alternate Drop Structure Behind Wallapplication/pdfapplication/acad
Tandem Alternate Fence Cross Sectionapplication/pdfapplication/acad
Tandem Capping Detailsapplication/pdfapplication/acad
Tandem Curve Detailsapplication/pdfapplication/acad
Tandem Drain Pipe Through Toe Slopeapplication/pdfapplication/acad
Tandem Drain Pipe Through Wall Fenceapplication/pdfapplication/acad
Tandem Individual Block Detailsapplication/pdfapplication/acad
Tandem Inside Anglesapplication/pdfapplication/acad
Tandem Inside Cornersapplication/pdfapplication/acad
Tandem Outside Anglesapplication/pdfapplication/acad
Tandem Outside Corner Detailsapplication/pdfapplication/acad
Tandem Recommended Install Patternsapplication/pdfapplication/acad
Tandem Reinforced Cross Section with Sidewalkapplication/pdfapplication/acad
Tandem Reinforcement Connection Detailapplication/pdfapplication/acad
Tandem Typical Base Preparationapplication/pdfapplication/acad
Tandem Typical Base Step-Upapplication/pdfapplication/acad
Tandem Typical Cross Section with Parallel Utilitiesapplication/pdfapplication/acad
Tandem Typical Cross Section with Slopeapplication/pdfapplication/acad
Tandem Typical Details for Large Utilities Through Wallapplication/pdfapplication/acad
Tandem Typical Details for Small Utilities Through Wallapplication/pdfapplication/acad
Tandem Typical Details for Utilities Below Wallapplication/pdfapplication/acad
Tandem Typical Drainage Swale Cross Sectionapplication/pdfapplication/acad
Tandem Typical Drop Structure Behind Wallapplication/pdfapplication/acad
Tandem Typical Excavation Oversizingapplication/pdfapplication/acad
Tandem Typical Fence Cross Sectionapplication/pdfapplication/acad
Tandem Typical Gravity Cross Sectionapplication/pdfapplication/acad
Tandem Typical Groundwater Intrusion Cross Sectionapplication/pdfapplication/acad
Tandem Typical Guide Rail Cross Sectionapplication/pdfapplication/acad
Tandem Typical Reinforced Cross Sectionapplication/pdfapplication/acad
Tandem Typical Shoreline Cross Sectionapplication/pdfapplication/acad
Tandem Typical Terrace Cross Sectionapplication/pdfapplication/acad
Tandem Wall Abutting Structureapplication/pdfapplication/acad

Detail Charts

Tandem Wall Design Chartsapplication/pdf

Installation & Maintenance Guides

Estimating Chart for Geosynthetic Reinforcement with Tandem Retaining Wall Systemsapplication/pdf
Tandem Calculation Guideapplication/pdf
Tandem Installation Guideapplication/pdf