Trinity Highway QuadGuard II Manuel utilisateur

QuadGuard

is a registered trademark of Energy Absorption Systems, Inc.

Part No. 611298

TrinityHighway.com

1 Revision H November 2019

QuadGuard

The QuadGuard

II has been tested pursuant to National Cooperative Highway Research Program

(“NCHRP Report 350”) specifications. The QuadGuard

II has been deemed eligible for federal-aid

reimbursement on the National Highway System by the Federal Highway Administration (“FHWA”).

Product Description Manual

2525 N. Stemmons Freeway

Dallas, Texas 75207

Warning:

The local highway authority, distributors, owners, contractors,

lessors, and lessees are responsible for the assembly, maintenance, and

repair of the

QuadGuard

. Failure to fulfill these RESPONSIBILITIES with

respect to the assembly, maintenance, and repair of the

QuadGuard

could

result in serious injury or death.

The instructions contained in this manual supersede all previous information and manuals. All

information, illustrations, and specifications in this manual are based on the latest QuadGuard

information available to Trinity Highway at the time of printing. We reserve the right to make

changes at any time. Please contact Trinity Highway to confirm that you are referring to the most

current instructions.

TrinityHighway.com 2 Revision H November 2019

Table of Contents

Customer Service Contacts..........................................................................................................3

Limitations and Warnings..............................................................................................................3

System Overview..........................................................................................................................4

Measuring the Width...............................................................................................................5

Trinity Highway Approved Adhesive Anchoring System...............................................................6

Site Conditions........................................................................................................................6

Transitioning ...............................................................................................................................10

Transition Panel Types...............................................................................................................11

QuadGuard®II CZ Deployment Criteria......................................................................................12

Foundation/Anchoring.................................................................................................................13

QuadGuard®II w/Tension Strut Backup................................................................................14

QuadGuard®II w/Tension Strut Backup Wide ......................................................................15

QuadGuard®II w/Concrete Backup ......................................................................................16

QuadGuard®II w/Concrete Backup Wide .............................................................................17

QuadGuard®II Construction Zone System ...........................................................................18

8” Concrete Pad for Tension Strut Backup ...........................................................................19

Optional 8” Concrete Pad Without Rebar for Tension Strut Backup.....................................21

Backup Assembly, Tension Strut, QG...................................................................................22

Concrete Backup, QG on Grade...........................................................................................23

Concrete B-up, QG on Existing Concrete Structure..............................................................24

Concrete Pad, for Concrete Backup, QG..............................................................................25

Backup Assembly, Concrete, QG .........................................................................................26

Concrete Pad, CZ, QG..........................................................................................................27

CZ Anchor/Lifting Kit, QG, (3-9 Bays)...................................................................................28

Monorail Assembly................................................................................................................30

Diaphragm Assembly, QB.....................................................................................................33

Shim Kit, Diaphragm, Rail Guide, QG II................................................................................34

Fender Panel Assembly, QG ................................................................................................35

Nose Assembly, QG II, Narrow.............................................................................................36

Nose Assembly, QG II, 48.....................................................................................................37

Backup Assembly, TS, QG Wide..........................................................................................38

Backup Assembly, Concrete, QG Wide................................................................................39

Concrete Pad & Backup, QG Wide.......................................................................................40

(69”) Concrete Pad & Backup, QG Wide on Grade ..............................................................41

Diaphragm Assembly, QG, Wide..........................................................................................43

Wide System Fender Panel Assembly..................................................................................45

Nose Assembly, QG II, Wide ................................................................................................46

PCMB Anchor Assembly.......................................................................................................47

End Shoe Assembly..............................................................................................................48

4” Offset Transition Assembly...............................................................................................49

Quad-Beam to W-Beam Transition Assembly ......................................................................50

Quad-Beam to Thrie-Beam Transition Assembly..................................................................51

TrinityHighway.com 3 Revision H November 2019

Customer Service Contacts

Trinity Highway is committed to the highest level of customer service. Feedback regarding the

QuadGuard®II, its assembly procedures, supporting documentation, and performance is always

welcome. Additional information can be obtained from the contact information below:

Trinity Highway

Telephone (888) 323-6374 (USA)

+1 312 467 6750 (International)

E-mail TrinityHighway.com/Contact

Website TrinityHighway.com

Limitations and Warnings

Trinity Highway contracts with FHWA approved testing facilities to perform crash tests, evaluate

test results, and submit results to the FHWA for review.

The QuadGuard®II has been deemed eligible for reimbursement by FHWA as meeting the

requirements and guidelines of NCHRP Report 350. NCHRP Report 350 tests are designed to

evaluate product performance involving a range of vehicles on roadways, from lightweight cars

(approx. 1800 lb. [820 kg]) to full size pickup trucks (approx. 4400 lb. [2000 kg]). A product can

be certified for multiple Test Levels. The QuadGuard®II is certified to the Test Level(s) as shown

below:

Test Level 2: 43 mph [70 km/h]]

Test Level 3: 62 mph [100 km/h]

These FHWA directed tests are not intended to represent the performance of systems

when impacted by every vehicle type or every impact condition existing on the roadway.

This system is tested only to the test matrix criteria of NCHRP Report 350 as approved by

FHWA.

Trinity Highway expressly disclaims any warranty or liability for injury or damage to persons or

property resulting from any impact, collision or harmful contact with products, other vehicles, or

nearby hazards or objects by any vehicle, object or person, whether or not the products were

assembled in consultation with Trinity Highway or by third parties.

The QuadGuard®II is intended to be assembled, delineated, and maintained within specific state

and federal guidelines. It is important for the highway authority specifying the use of a highway

product to select the most appropriate product configuration for its site specifications. The

customer should be careful to properly select, assemble, and maintain the product. Site lay out,

vehicle population type; speed, traffic direction, and visibility are important elements that require

evaluation in the selection of a highway product. For example, curbs could cause an untested

effect on an impacting vehicle.

After an impact occurs, the debris from the impact should be removed from the area immediately

and the specified highway product should be evaluated and restored to its original specified

condition or replaced as the highway authority determines as soon as possible.

TrinityHighway.com 4 Revision H November 2019

System Overview

The QuadGuard

II is a potentially reusable, re-directive, non-gating crash cushion for roadside

obstacles ranging in width from 24” to 126” [610 mm to 3200 mm]. It consists of energy-absorbing

cartridges surrounded by a framework of Quad-Beam

Panels. The decision as to whether this

product is reusable after impact rests solely within the sound discretion of the trained engineer,

experienced in highway products, who is working at the direction of the local DOT, or appropriate

highway authority, which specified and now owns the product.

The QuadGuard

II utilizes two types of cartridges in a staged configuration designed to address

both lighter cars and heavier, high center-of-gravity vehicles. Its modulardesign allows the system

length to be tailored to the design speed and appropriate number of Bays for a site (p. 10).

Impact Performance

The 5 Bay QuadGuard

II has successfully passed the requirements outlined in NCHRP Report

350, Test Level 3 tests with both the light car and pickup at speeds of up to 62 mph [100 km/h] at

angles up to 20 degrees.

During head-on impact testing, within NCHRP Report 350 criteria, the QuadGuard

II is designed

to telescope rearward to absorb the energy of impact. When impacted from the side, within the

applicable NCHRP Report 350 criteria, it is designed to redirect the vehicle back toward its original

travel path and away from the roadside obstacle.

How to Determine Left/Right

To determine left from right when ordering parts, stand in front of the system facing the roadside

feature. Your left is the system’s left and your right is the system’s right.

Counting the Number of Bays

One Bay consists of one Cartridge, one Diaphragm, two Fender Panels, etc. The Nose section is

not considered a Bay, though there is a Cartridge in the Nose of each system. Note that this

means there will always be one more Cartridge in the system than the number of Bays in the

system. To determine number of Bays, count Fender Panels on one side (Figure 1).

Figure 1

System Orientation

3 - Bay System

REAR

FRONT

LEFT

RIGHT

DIAPHRAGM

FENDER PANELS

CARTRIDGE

NOSE

BAY

TrinityHighway.com 5 Revision H November 2019

Measuring the Width

The QuadGuard

II is available in seven (7) nominal widths:

24” [610 mm]

30” [760 mm]

36” [915 mm]

48” [1219 mm]

69” [1755 mm] - (Minimum 3 Bays Required)

90” [2285 mm] - (Minimum 3 Bays Required)

126” [3200 mm] - (Minimum 6 Bays Required)

The nominal width of a parallel system is the width of the diaphragm (Figure 2).

The nominal width of a wide system is the width at the location shown in Figure 3.

The outside width of the system is approximately 6” [150 mm] to 9” [230 mm] wider than the

nominal width. The width of the system is not the same as the width of the Backup.

Figure 2

Width of Narrow system

Figure 3

Width of Wide system

TrinityHighway.com 6 Revision H November 2019

Trinity Highway Approved Adhesive Anchoring System

A Trinity Highway approved adhesive anchoring system is required to securely anchor crash

cushions. Each approved adhesive kit contains adhesive, studs, nuts, washers and instructions.

Both vertical and horizontal assemblies are possible using an approved adhesive anchoring

system.

Site Conditions

Cross-slope exists – If there is a cross-slope of

more than 8% (5 degrees), or if the cross-slope

varies (twists) more than 2% (1 degree) over the

length of the system, a concrete leveling pad

may be required (Figure 4).

No cross-slope – No additional action is

required.

1) Specify Backup Structure

The two Backup designs available are the Tension Strut Backup and the Concrete Backup.

Both types are appropriate for use on grade or deck.

2) Special Conditions

Contact Trinity Highway Customer Service Department if you would like input with your

application. You will need to answer the following questions:

1. Are curbs, islands or elevated objects (delineators or signs) present at the site?

What height and width are they? All curbs and elevated objects over 4” [100 mm] high

should be removed. If possible, curbs taller than 4” [100 mm] high should be removed

approximately 50’ [15 m] in front of the QuadGuard

II and as far back as the system’s

Backup. Any curbs that must remain should be 4” [100 mm] maximum and be mountable.

2. What is the angle of divergence if the construction site is a gore area?

What is the general geometry of the site, including the roadway for at least 500’ [150 m] in

front, so traffic patterns can be visualized?

3. Is there an existing barrier? Where there is an existing guardrail or median barrier at the

site, the Backup of the QuadGuard

II should tie into it when possible.

4. Will there be traffic approaching from the rear of the system? Is the system in a two-

way traffic situation, with traffic going in opposite directions on either side of the system?

Or, is the system on the side of the road in a location where crossover traffic is a concern?

If so, a Transition from the back of the system to the hazard isnecessary to prevent vehicle

interaction (pp. 12 & 13).

5. Are there any other unique features at the site that may affect positioning or

performance of the QuadGuard

II?

Figure 4

Cross-Slope

TrinityHighway.com 7 Revision H November 2019

3) Other Factors that May Affect Your Deployment:

1. The existence of drain inlets.

2. Junction boxes or other appurtenances located near the hazard.

3. Insufficient space for the length preferred.

4. The location and movement of expansion joints.

If these or any other special site conditions exist, please contact Trinity Highway Customer

Service Department before proceeding with your design (p. 3).

Important:

It is the responsibility of the appropriate highway authority to select

the location for the QuadGuard II in accordance with the Roadside Design Guide.

Trinity Highway is not responsible for choosing the location where a system will be

placed.

Impact conditions which differ from those described in the NCHRP Report 350 test matrix for

non-gating, redirecting crash cushions may result in different crash results than those

encountered in testing.

Furthermore, impacts in excess of TL-3 impact severity, or the existence (at the site of

assembly) of curbs or cross-slopes in excess of 8%, may yield performance which does not

meet NCHRP Report 350 evaluation criteria relative to structural adequacy, occupant risk and

vehicle trajectory factors.

Figure 5

Model Number Key

TrinityHighway.com 8 Revision H November 2019

These following charts represent the modified versions of the QG II length relative to impact

speed, which is based on the capacity of the system using a 2000 kg [4400 lb.] pickup truck.

Speed & Cartridge Placement Chart For Narrow Systems

# of Bays Model # kph [mph] Type I Type II

1* QG 240_ _ 40 [25] 2 0

2 QG 270_ _ 70 [44] 2 1

3* QG 280_ _ 80 [50] 2 2

4* QG 290_ _ 90 [56] 3 2

5 QG 2100_ _ 100 [62] 3 3

6* QG 2105_ _ 105 [65] 4 3

7* QG 2110_ _ 110 [68] 4 4

8* QG 2115_ _ 115 [71] 4 5

9* QG 2120_ _ 120 [75] 4 6

Speed & Cartridge Placement Chart For Wide Systems

# of Bays Model # kph [mph] Type I Type II

3* QG 270_ _ 70 [44] 2 2

4* QG 280_ _ 80 [50] 3 2

5* QG 2100_ _ 100 [62] 3 3

6* QG 2105_ _ 105 [65] 4 3

7* QG 2110_ _ 110 [68] 4 4

8* QG 2115_ _ 115 [71] 4 5

9* QG 2120_ _ 120 [75] 4 6

*System capacity estimated through calculation.

TrinityHighway.com 9 Revision H November 2019

Figure 6

Plan & Elevation

5 - Bay system with Tension Strut Backup

3200 [126”] MODEL NO. QG2100126 (Min. 6 Bays required)

2285 MM [90”] MODEL NO. QG210090

QUADGUARD®II

FOR WIDE HAZARDS

QUADGUARD®II

FOR NARROW HAZARDS

1755 mm [69”] MODEL NO. QG210069

610 mm [24”] MODEL NO. QG210024

760 mm [30”] MODEL NO. QG210030

915 mm [36”] MODEL NO. QG210036

1219 mm [48”] MODEL NO. QG210048

5.83 m [19’-1”]

8.73 M [22’-1”]

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