Landscape · L-JEHQ8

Suspended Paving System

Materials

Elements

About this detail

A suspended paving system utilizes Silva Cells to support a cast-in-place concrete sidewalk and porous Flexipave around a street tree. The system is anchored to the ground using four ten-inch spikes per cell over a four-inch aggregate sub-base and compacted subgrade. Imported planting medium fills the tree pit, separated from the cell decks by a one-inch air space and enclosed by root barriers. Backfill is installed in eight-inch lifts, compacted to ninety-five percent, and wrapped in geogrid fabric. Cells maintain a one-to-three-inch spacing blocked out with two-by-four lumber as necessary.

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