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A-1 Structural Soil

A-1 Structural Soil is a gap graded soil uniformly blended of crushed stone, sandy clay loam, organics, Gypsum and PAM
(polyacrylamide/propenoate-propenamide copolymer) which helps prevent the separation of soil and stone during mixing and installation.  A-1 Structural Soil is used to create a solid base under pavement allowing tree roots to grow through the soil pockets resulting in a healthy long life for trees while supporting mases. The mix retains a void to allow for water and air movement and gives room for root growth. (Made on order only.)


A1 Structural Soil Cutsheet



  • Sidewalks
  • Parking Lots
  • Business Parks
  • Shopping Plazas
  • School Campus


A-1 Structural Soil should be installed per construction plans or engineers specifications
*Made when ordered.  Please give us at least 1 weeks notice for us to blend the soil*



  • USDA Soil ClassificationSandy Clay Loam
  • Bulk Density2,986lbs per CY
  • Conversion tons/cy1.5>
  • PH Range 7.0-8.0
  • ECe (Salinity)3.0
  • Sand 40%-50%
  • Silt 20%-30%
  • Clay 25%-30%

Specification data subject to change. Additional data available upon request. 

Limitation of Warranties: Seller makes no warranty of any kind, express or implied, regarding the materials; and all warranties, including any implied warranty of merchantability and any implied warranty of fitness for a particular purpose, are hereby excluded.