Trinity Highway MATT, Assembly Manual

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TrinityHighway.com
February 2022
Overview
The MATT™ has a system length of 34’-4 1/2” [10.477 m] long and is a tangent, 31” [787mm] (+1” -0”) [+25 mm, -0 mm]
high, double-sided, re-directive/gating and energy absorbing attenuator/end terminal available for use with various
longitudinal highway barriers, in either unidirectional or bidirectional traffic applications.
The MATT™ consists of MATT™ 10 and 12 gauge slotted guardrail, MATT™ 12 gauge transition guardrail with an
integrated fin and MATT™ 12 gauge slotted guardrail with an integrated fin, MATT™ 10 gauge head rail, MATT™
impact head, MATT™ CR top and bottom posts, MATT™ SYTP
®
with soil plate, MATT™ system line post with soil
plate, MATT™ angle strut, MATT™ cable assembly, MATT™ spacers, composite offset blocks and various other
required hardware accessories.
When connecting the MATT™ to Median MGS using offset blocks other than 8” [200 mm] – such as Median MGS
utilizing 12” [300 mm] offset blocks – refer to the AASHTO Roadside Design Guide (current edition) for appropriate
minimum taper/flare rates for barrier design.
When connecting the MATT™ to W-beam guardrail heights other than 31” [787 mm], or rigid or semi-rigid barriers, (i.e.
concrete barrier, thrie beam, wall or bridge pier) a transition will be required - see FHWA and/or state/specifying agency
standards.
Gauge Conversions
10 Gauge [3.43 mm]
12 Gauge [2.67 mm]