AWS™ Pedestal System
The AWS™ Pedestal System is designed for concrete pavers to lay level over a
built up roof. The substrate can be either concrete or wood structure, with a
roof membrane over the top.
The AWS™ Pedestal System consists of 6 pieces and the 4" diameter PVC:
Top Cap
Bottom Cap
Top Shims of 1/16" and 1/8"
Round Bottom Shims of 1/16" and 1/8"
The PVC allows the AWS™ Pedestal System to vary in heights up to 20+ inches. The standard
1/8" vertical spacer on the top cap allows for an open joint and proper
alignment of the pavers.
The top cap is 1/2" in height, if required a 1/16" or 1/8"
bottom shim locks into the bottom of the top cap. Once 1" in height is
obtained, the top and bottom cap can be used with PVC and 1/8" and
1/16" bottom shims.
The uniqueness of the round bottom shims, both 1/16" and 1/8" allow
them to be broken in half and stacked on the bottom shim for those areas that
are sloped more than the typical 2%. They have a "V" groove on the
bottom. One pass through with a utility knife, allows for easy breakage. They
may be stacked on the bottom. They lock to the cap to impede movement of the
pedestal. The subsequent weight of the paver will keep the system in place.
A typical installation would start off the threshold of a door or control
point, provided by architect or contractor. The first height of the AWS™
Pedestal System pedestal is then determined. (A standard chop saw with fine tooth blade
(12") compatible with plastic) can cut the PVC height insert.
An installer then cuts the PVC to the required height, less the 1/4"
inset for each top and each bottom cap, e.g., a 1-1/2" pedestal needs
1" PVC and the 1/2" top piece which insets 1/4", plus the
1/2" bottom cap which insets 1/4" -- making the total pedestal
1-1/2" high.
The "press fit" of the caps -- top and bottom -- requires no gluing
or other attachments. The caps can be easily removed during installation if
desired. Both the small top shims and round bottom shims can be used for
"fine tuning" the proper height, if required. All top shims and bottom
shims lock into place, and all six pieces (if used) interlock, allowing no paver
movement and a level surface.
For proper heights lower than 1/2" the AWS™ Pedestal System standard cross, 1"
long, 1/2" high and 1/8" thick can be used with the AWS™ Pedestal
System standard
4"x4" square shim, both in 1/16" and 1/8" thickness (though
we recommend that if construction permits, it is always preferable to have at
least a 1" gap under pavers to allow for airflow and water movement).
The 4" PVC used in the AWS™ Pedestal System may be either of two standards: 2729 or
3034. Both are off-the-shelf products, standard in North America with the
outside dimension of 4.215", matching the inside diameter of the AWS™
Pedestal System top
and bottom cap.
Typical use is the thin wall PVC (2729). Independent compression tested from
1" up to 5", ranges from 7,000 to 15,750 psi. Thicker wall PVC (3034)
4.210" OD, 5" up to 27" compression tested 11,000 to 13,200 psi.
(NOTE: all testing done with both top and bottom AWS™ Pedestal System caps in place.)
For more information & installation ideas, visit
www.AppianWaySystem.com
