Trinity Highway MATT, Assembly Manual

Page: 10 / 44

TrinityHighway.com
February 2022
Post Placement
The MATT™ posts are inserted into the soil using an auger or post pounding equipment for placement.
If an auger is used, ensure diameter is large enough to allow for proper compaction of state/specifying
agency approved fill material. All MATT™ posts must be assembled within established standard
construction tolerances, including being plumb. Compaction for all posts must be within the
state/specifying agency guidelines.
Danger:
It is the responsibility of the installer to ensure all above & below ground utilities
as well as drainage structures are located, marked, and identified prior to using an auger
or post pounding tool in accordance with state/ specifying agency
guidelines. Failure to
follow this warning could result in serious injury or death.
Rigid Pavement and Rock
If rigid pavement (e.g. concrete or asphalt) of any thickness is encountered within the system, ensure a
proper “leave-out” area (the specified size of open space as defined in the AASHTO Roadside Design
Guide) and/or per the state/specifying agency is provided around the posts and filled with the state/
specifying agency approved backfill material.
If solid rock is encountered at post locations 3-6, refer to the state/specifying agency guidelines and/or
the AASHTO Roadside Design Guide for requirements for embedment depth into the rock and size of
the hole. If solid rock is encountered at post locations 1-2, auger a hole in the rock large enough for full
post embedment and proper compaction of approved fill material.
Drilling Holes into rock
Caution: It is the responsibility of the installer to consult Occupational Safety & Health
Administration (“OSHA”) silica respiratory standard 29 Code of Federal Regulation (“CFR”)
1910.134 for debris removal and ensure compliance.
Inspect Shipment
Carefully unpack and inspect all components for damage. Check the received parts against the packing
list supplied with the system. If any parts are damaged, missing, or unspecified; do not attempt to assemble
the system and contact Trinity Highway immediately (p. 4).
Warning: Use only Trinity Highway parts that are specified by Trinity Highway for
use with the
MATT™
for assembling, maintaining, or repairing the
MATT™.
Do not
utilize or otherwise commingle parts from other systems even if those systems
are other Trinity Highway Products or Systems.