#89 Stone (Crushed Granite) spec-aggregate Super Loam: Super Loam is
#89 Stone (Crushed Granite) spec-aggregate Super Loam: Super Loam is#89 Stone (Crushed Granite) The Small Format Spec Stone for Paver Joints & Permeable Bases #89 Stone is the " top crushed granite that contractors specify by name for permeable paver joints, walkway finishes, and tight pack drainage layers. Native Boston area granite, angular, washed, with a tight ASTM C33 AASHTO M43 No. 89 gradation small enough to lock pavers, large enough to drain. If a permeable pavement detail calls for "#89 joint stone," this is
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