|SITE PREPARATION AND LAYOUT
Interlock Curb can be installed on asphalt pavement, either base or surface coat, or on concrete pavement. The curbing is designed to be set on clean, level pavement. Before laying the curb, sweep all loose debris from the surface and patch large depressions or holes. Use a chalk line to mark all straight runs of curb allowing a minimum distance of 10 inches from the front face of the curb to pavement edge. Unload and space the pallets of Interlock Curb to appropriate intervals. The average pallet of Interlock Curb contains 75 lineal feet of curbing and should be spaced accordingly.
PLACEMENT OF INTERLOCK CURB
Individual curb sections can be lifted and placed by hand. Set the Interlock Curb end to end along chalk line, interlocking the tongue and groove joints. Radii can be chalked or laid along the pavement edge and adjusted. Intricate designs and curb islands should be laid out in their entirety before nailing.
ASPHALT APPLICATIONS - Interlock Curb is delivered to the job site with factory preset nails for asphalt pavement. After placing curb and checking for a sharp aesthetic line, begin nailing from either end of the curb line. Drive the preset spikes completely into the asphalt, so that each nail head is flush with the bottom of the nail cup. This can be accomplished by the use of an electric hammer drill with an Interlock Curb adapter, or by driving the nails with a hammer and a recessing tool.
CONCRETE APPLICATIONS - Interlock Curb can be installed on concrete pavement by removing the preset asphalt spikes and substituting concrete nails and washers. The nails should be driven into the concrete pavement with a powder actuated nail gun. Approved concrete nails and special washers are available from your local Interlock Curb distributor.
SPECIAL COMPACTED GRAVEL APPLICATIONS - Certain off road and walking path applications call for Interlock Curb to be installed on compacted gravel. After compacting and leveling the gravel, use a string line to obtain proper alignment. Remove preset spikes and replace with manufacturer approved landscape nails. The nails should be driven into the gravel using a hammer and recessing tool.
ADHESIVES - Curb adhesives can greatly improve the stability of the final installation. This may be necessary in high impact areas as well as locations with inadequate compacted backfill. Adhesives greatly increase the durability of high traffic areas such as entrances and exits. Approved adhesives are available through your local Interlock Curb distributor.
To insure the longevity of the installation, Interlock Curb must receive compacted backfill the entire height of the curb section. Proper backfill performs a critical stability function in conjunction with the tongue and grooved ends, twisted anchoring spikes and overall profile design. The type of backfill material used will vary depending on the traffic environment the curb will be subjected to after installation. In extremely high impact areas, concrete or asphalt backfill will maximize Interlock Curb performance. Other backfill material such as soil, stone or gravel will perform well in normal traffic areas. They should be compacted to 90% dry density.
INTERLOCK CURB / SIDEWALK COMBINATION
Set the Interlock Curb on base pavement as outlined above, using the curb as an outside form for the sidewalk. Then prepare and pour the sidewalk with accepted concrete procedures. For best results, edge the sidewalk along the top of the curb and construct control joints every three or six feet, aligning them with curb joints. Expansion material is not necessary between the curb and sidewalk, but it should be used along the inside of the sidewalk if it adjoins a building or another concrete mass.
Minnick Concrete Products, Inc.
Copyright © 1997-1998 Minnick Concrete Products, Inc.