Permeable Paver
Installation
Excavation, Site Prep, and Geotextile For increased durability and/or heavy vehicular traffic, in
Note: Non-woven geotextile is always recommended, and is order to help hold your edge restraint, place a bi- or tri-axial
placed on the compacted soil sub-grade under the open- geogrid on top of the base layer before screeding the bedding
graded base. layer.
Apply non-woven geotextile to the bottom and sides of the Lay the Paving Stones
excavated area. Start laying geotextile at the top end of the Lay the paving stones on the bedding layer in the patterns the
drainage slope following down with overlapping joints of manufacturer recommends. Maintain straight pattern lines;
24". Install all drain pipes, observation wells, and overflow use string lines if necessary. Cut pavers with a double-bladed
pipes in the base, depending on their location. splitter or masonry saw to fill gaps at the edges of the paved
area. Compact and seat the pavers into the bedding material
Keep the area where the pavement is to be constructed free
by using a low amplitude (75-90 Hz) plate compactor capable
from sediment and dirt during the entire job. Geotextile,
of at least 5000 lbs. centrifugal compaction force. During
base, and bedding materials contaminated with sediment
laying, all pavers within 3' of the laying face must be left fully
and dirt should be removed and replaced with clean
compacted at the end of each day.
materials.
Base Construction Edge Restraint
Place, grade, and compact a minimum of 10" of ¾"-0 open Install the edge restraint. We recommend a poured-in-place 6"
aggregate for the base. curb or the use of PermaEdge with geogrid. A curb is the best
option for vehicular applications. If you're using PermaEdge,
If more than 10" of base is required, use a sub-base of 2" pull the geogrid up into the material to lock it in place (see
open rock. The sub-base is typically compacted in 4-6" lifts diagram).
with a minimum 300lb plate compactor or 10-ton static
roller. Make at least four passes with a maximum of 6" of Sweep in Joint Materials
aggregate per lift, with no visible movement in the sub-base Sweep ¼-10 into the openings, vibrating and compacting the
material when compaction is complete. Care must be taken pavers again until the material is ½" from the top surface.
not to damage the installed drain pipes during compaction This will require two or three passes with the compactor.
and paving. Remove excess aggregate by sweeping the pavers clean.
After the sub-base is compacted, apply 10" of ¾"-0 open Finalize the Project
aggregate for the base material. The base is typically The final surface elevations should not deviate more than ±
compacted in 2-4" lifts with a minimum 300lb plate 3/8" over the length of a 10' straightedge. The final surface
compactor or 10-ton static roller. Make at least four passes elevations should be ¹₈"–¹₄" above adjacent drainage inlets,
with a maximum of 4" of aggregate per lift, with no visible concrete collars or channels.
movement in the sub-base material when compaction
Typical Cross Section of ¼-10 FILLED
is complete. The elevation of the compacted surface JOINTS
Permeable Paver Installation
should not deviate more than ± ½" over the length of a 10' PERMEABLE
PAVERS
straightedge.
PERMAEDGE®
¼-10 LEVELING
For increased durability and/or heavy vehicular traffic, place LAYER
a bi- or tri-axial geogrid once you have 4" of base installed GEOGRID
and compacted. ¾"-0 OPEN
BASE LAYER
2"-OPEN
Bedding Layer SUB-BASE
Screed 1-1½" of ¼"-10 open and washed aggregate as a GEOGRID
bedding layer. Do not compact this layer! FILTER FABRIC
10095 Rickreall Rd. • Rickreall, OR 97371 | 9145 Fasset St. • Olympia, WA 98512
503.623.9084 | 360.878.9301
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