Installing Paver

Proper installation of paver edgings is important to avoid, breaking, heaving and other hazards that may occur when edging is not installed properly. The first part of any installation is the preparation of the base.

Base Preparation

Unsuitable, unstable or unconsolidated material shall be excavated to reach solid subgrade.

Depth of base course aggregate is dependent upon the bearing ratio of subgrade; type of aggregate for base; quality of compaction; expected traffic loads; moisture expectations; freeze-thaw; and other factors. If pavement is to be used in commercial or industrial projects the base design should be fully engineered by competent professionals.

For most projects the following is a recommended guideline:

• Pedestrian exclusively 4"-6" base
• Light vehicular 6"-12" base
• Moderate vehicular occasional heavy loading 8"-18" base

Base course aggregate shall be 3/4" minus crushed limestone, or equivalent and consist of sound, durable particles, free from clay, organic material or other deleterious matter, with 100 percent passing a 1" sieve size and a maximum of 5 percent passing a #200 sieve.

Compaction of base course material should be in maximum 4" lifts and compacted with suitable vibratory compaction equipment to reach 95 percent of the modified proctor density of ASTM 1557. Moisture content of base material should be kept at optimum during compaction.

Base preparation should extend beyond the edge of the pavement to allow for a shoulder to support the base. The following is a recommended guideline:

• Walkways 4"-8"
• Driveways 6"-10"
• Commercial/heavy 18"-36"

This paver edging is made from PVC, a structural plastic that has ?EUR??,,??memory,?EUR??,,?? so as it moves under load it returns to its original shape. Inset: A proper edge restraint should help with layout on the job, not force you to its limitations. Many times it is important to lay out the perimeter or boundaries first. Pave Edge Rigid helps the contractor stay on the chalk or string lines as the edging is being spiked in.

Installation

?EUR??,,?? Layout: Place edging on top of uniformly compacted graded gravel base per pavement design, and spike through predrilled holes in the edging into the compacted base using 10?EUR??,,?? x 3/8?EUR??,,?? diameter steel spikes.

?EUR??,,?? Curves and radiuses: Provide flex edging for all radii. Flex the edging to match the radius, cut or add to desired length. Space out supports from the end of the strip, leaving one on each end to hold the edging connectors when joining pieces.

Do not use flex edging on straight areas, use only for radius areas. In the event flexible tubing is not on hand, use rigid edging by cutting the backside with a hack saw; a straight cut for outside radii and a wedge shaped cut for inside radii. The more frequent the cuts, the tighter the curve that can be made. When using Pave Edge Industrial it will be necessary to relief cut the front and back side of the edging to make it flex adequately.

?EUR??,,?? Joining sections: Cut the 6 ft. section of edging connector pipe into 5?EUR??,,?? lengths. Insert into the most forward cavity of the edging. Having started the connector in one section, use a twisting motion to slide two sections together.

?EUR??,,?? Staking: Pound in spikes only part way every 4 ft. (to accommodate edging adjustment) using 10?EUR??,,?? x 3/8?EUR??,,?? diameter bright steel spikes. After final edging placement, finish setting spikes so that the heads of spikes are tight to the edging material, When using flex edging, one spike must be used in every support section. As a guide, when using rigid edging, use one spike every 3-4 ft. on patio/sidewalks; every 2 ft. on driveways, and every 12?EUR??,,?? for medium duty pavements. Note: Spike every support section on flex. Industrial is spiked every 6?EUR??,,?? alternating each side of the edging into the predrilled holes.

?EUR??,,?? Sand bedding course: Spread coarse, washed sand evenly over the area to be paved and screed loosely (no compaction) to a uniform 1?EUR??,,?? thickness before the paving stones are placed. Use Pave Edge for exterior screed guides and 1?EUR??,,?? O.D. pipes for interior guides, After screeding, this sand bedding course shall not be disturbed. When pavers are installed and edge pieces are cut to fit, use a vibratory plate compactor to tamp the entire pavement area, including along the edge.

?EUR??,,?? Backfilling: After installation of pavers is complete, backfill around the perimeter with the proper amount of top soil, placing sod directly up to the pavers. Edging will be invisible when the project is completed.

Pavers and edge restraints on a residential job, be it a driveway or a sidewalk, will receive their heaviest load at the time of installation.

Pavement Overlays

The recent popularity of rehabilitating old pavements by overlaying interlocking paving stones has opened more options to the architect/engineer. Pave Edge Industrial is the perfect product for such installations.

?EUR??,,?? Overlaying concrete and asphalt: It is very important that before considering overlay as an option you must first determine that the existing pavement is still in good condition and that the wear course is the major component of deterioration.

?EUR??,,?? Preparing the surface: Any potholes must be filled with compacted aggregate. Any large cracks must be filled. Any grade changes must be made with compacted aggregates.

?EUR??,,?? Filter fabric: A compatible filter cloth must be laid down before screeding any sand. This will stop any bedding sand from seeping into cracks or holes in the old pavement.

?EUR??,,?? Edge restraint: Should be laid out according to plan specifications. Keep filter fabric folded back from edge and do not screed sand for about a 2 ft. area along the perimeter where Pave Edge Industrial is to be installed. This will allow room for workers to install edging. Using a hammer drill with a 3/8" masonry bit 12" in length, drill every other spike hole on the side to be underneath the pavers. Then it is a simple task to go back and drill the rest without fear of knocking the edge out of alignment. Then fold the filter fabric down and up and over the edging (it can be trimmed later). Then finish screeding the sand.

Note: When spiking into concrete you may spike every other hole without danger of the edge losing support.

Edging can be installed before or after pavers are laid. If installing later, first pull away the excess bedding sand. Using a trowel or shovel cut straight down the side of the pavers to the base and pull back the sand. Do not scrape up base material. Above right: The edging helps the contractor to lay out precise curves and radiuses, providing just the right amount of resistance to help lay out gradual, flowing curves.