VALTIR QuadGuard M10, Product Manual

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Valtir.com 15 Revision F August 2022
Foundation/Anchoring
Important:
It is the responsibility of the local DOT or appropriate highway
authority to ensure that this assembly conforms to the AASHTO Roadside Design
Guide.
Warning:
It is the responsibility of the installer to ensure that your assembly
procedure meets all appropriate Occupational Safety and Health Administration
(“OSHA”) and local standards.
Asphalt Installations
Systems with a Tension-Strut Backup may be temporarily installed in construction zones on
asphalt. Assemblies on
Asphalt Concrete (“A.C.”) must provide a minimum of 3” [76 mm] layer
of asphalt over a minimum of 3” [76 mm] layer of Portland Cement Concrete (“P.C.C.”) ,
6” [152 mm] layer of asphalt over 6” [152 mm] layer of subbase, or 8” [200 mm] layer of asphalt
with no subbase.
Important:
Only 18” [460 mm] threaded rods, utilizing Valtir approved adhesive,
can be used with asphalt foundations (p. 15). Contact Valtir for a complete list of
approved adhesives (p. 3).
Concrete Installations
For concrete installations, the QuadGuard
®
M10 should be installed only on an existing or freshly
placed and cured concrete base (4000 psi [28 MPa] minimum). Orientation of the concrete base
and the attenuator must comply with the project plans or as otherwise determined by the resident
project engineer or appropriate highway authority.
Recommended dimension and reinforcement specifications for new concrete pads can be found
on the standard drawings.
The QuadGuard ® M10 may be installed on any of the following foundations using the specified
anchorage:
Foundation A: Reinforced Concrete Pad or Roadway
Foundation: 6” [152 mm] minimum depth P.C.C.
Anchorage: Approved adhesive with 7” [ 180 mm] studs 5 1/2” [140 mm] embedment
Foundation B: Asphalt over P.C.C.
Foundation: 3” [76 mm] minimum asphalt concrete (A.C.) over 3” [76 mm] minimum P.C.C.
Anchorage: Length of anchor required is 18” [460 mm] and embedment of 16 1/2” [420 mm]
Foundation C: Asphalt over Subbase
Foundation: 6” [152 mm] minimum A.C. over 6” [152 mm] minimum Compacted Subbase (C.S.)
Anchorage: Approved adhesive with 18” [460 mm] studs 16 1/2” [420 mm] embedment
Foundation D: Asphalt Only
Foundation: 8” [200 mm] minimum A.C.
Anchorage: Approved adhesive with 18” [460 mm] studs - 16 1/2” [420 mm] embedment