Eco-Priora®
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- 1. Excavate the subgrade material to the depth required. The subsoil is generally not compacted.
The next layer is the open graded sub base consisting of ASTM #2, #3, or #4 stone,
and varies in thickness according to the site specific requirements. The base material is typically
4-inches thick for vehicular traffic consisting of ASTM #57 or #67 crushed stone.
- 2. Install edge restraint using concrete curb or concrete toe.
- 3. The open graded bedding course is typically 2-inches thick consisting of small angular
aggregate which is ASTM #8, #9, or similar sized material.
- 4. Install Eco-Priora units on bedding course in pattern desired allowing approximately
1/8” between units.
- 5. Where required, cut Eco-Priora units with an approved cutter to fit accurately, neatly
and without damaged edges.
- 6. Tamp Eco-Priora units with mechanical vibrator uniformly level, true to grade and free
of movement. Openings should be filled with free draining material to prevent shifting or
top soil if vegetation growth is desired.
- 7. The openings should be filled with #9 stone or otherwise specified by the designer. It is
important to fill the joints, vibrate the stone using a plate compactor, repeat the process.
- NOTE: A civil or geotechnical engineer experienced with local site conditions should
be consulted for specific design details.