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Porous pavers near existing trees

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porous pavers in parking lot

This parking lot for a large botanical garden was constructed near some existing large trees. Porous pavers were used to help preserve the root system and soil structure.

Be sure that the soil grade is not lowered during the construction process because this will damage roots. Soil can be added around the roots to prepare a base for the pavers, but be sure it is coarser than the existing soil. A coarse sand would work nicely because it compacts yet allows for enough air space between particles for air movement.