#57 Stone (Crushed Granite) raised-bed How Site Loam compares

How Site Loam compares

Plus a compacted base material like our Dense Pack ¾" to minus underneath for structural support

Quality crushed concrete is processed to remove rebar

5" Riverbed as the bottom layer with stones piled into shallow mounds at 4–6" depth

but no surprise rocks or organic chunks that would interfere with seed germination or sod installation

#57 Stone (Crushed Granite) raised-bed How Site Loam compares#57 Stone (Crushed Granite) The Industry Spec Drainage & Concrete Stone #57 Stone is the named spec crushed stone every drainage installer, septic contractor, and ready mix concrete crew calls out by number. Quarried from native Boston area granite, angular, washed, and gradationally clean of fines, it drains fast, locks under load, and meets the ASTM C33 AASHTO M43 No. 57 standard called out on engineered drawings. If a plan sheet says "57 stone,"