STI Project: Barrier Systems, Inc. RTS-QMB Longitudinal Barrier. Page 38 of 40 QBOR1. Appendix F (Continued) Figure F-3

Similar documents
Appendix D. Figure D-1. ENCLOSURE 1 (4 Pages) SafeGuard TM Gate System

July 10, Refer to: HSA-10/CC-78A

February 8, In Reply Refer To: HSSD/CC-104

A MASH Compliant W-Beam Median Guardrail System

Product Specification. ABSORB 350 TM TL-2 Non-Redirective, Gating, Crash Cushion Applied to Quickchange Moveable Barrier

Form DOT F (8-72) Texas Transportation Institute The Texas A&M University System College Station, Texas

Virginia Department of Transportation

June 5, In Reply Refer To: HSSD/B-178. Mr. Kevin K. Groeneweg Mobile Barriers LLC Genesee Trail Road Golden, CO Dear Mr.

ROBUST PROJECT Norwegian Public Roads Administration / Force Technology Norway AS

Universal TAU-IIR Redirective, Non-Gating, Crash Cushion

ArmorGuard Barrier Portable Longitudinal Barrier

NCHRP Report 350 Test 4-12 of the Modified Thrie Beam Guardrail

Development of Combination Pedestrian-Traffic Bridge Railings

GUARDRAIL TESTING MODIFIED ECCENTRIC LOADER TERMINAL (MELT) AT NCHRP 350 TL-2. Dean C. Alberson, Wanda L. Menges, and Rebecca R.

WP5 - Computational Mechanics B5 - Temporary Vertical Concrete Safety Barrier MAIN REPORT Volume 1 of 1

Texas Transportation Institute The Texas A&M University System College Station, Texas

ArmorGuard Barrier Portable Longitudinal Barrier

WP5 - Computational Mechanics B1 (ESP-N2) Barrier Steel N2 MAIN REPORT Volume 2 of 2

BarrierGate. General Specifications. Manual Operations General Specifications

MASH Test 3-11 on the T131RC Bridge Rail

Manual for Assessing Safety Hardware

Texas Transportation Institute The Texas A&M University System College Station, Texas

MASH08 TEST 3-11 OF THE ROCKINGHAM PRECAST CONCRETE BARRIER

PRODUCT & INSTALLATION MANUAL RICOCHET SAFETY BARRIER SYSTEM TL2 MASH 1

CRASH TEST AND EVALUATION OF 3-FT MOUNTING HEIGHT SIGN SUPPORT SYSTEM

CRASH TESTING OF RSA/K&C ANTI-RAM FOUNDATION BOLLARD PAD IN ACCORDANCE WITH U.S. DEPARTMENT OF STATE DIPLOMATIC SECURITY SD-STD-02.

Texas Transportation Institute The Texas A&M University System College Station, Texas

VERIFICATION & VALIDATION REPORT of MGS Barrier Impact with 1100C Vehicle Using Toyota Yaris Coarse FE Model

TEXAS TRANSPORTATION INSTITUTE THE TEXAS A & M UNIVERSITY SYSTEM COLLEGE STATION, TEXAS 77843

MASH TEST 3-11 OF THE TxDOT T222 BRIDGE RAIL

Texas Transportation Institute The Texas A&M University System College Station, Texas

StopGate TM Barrier Arm GENERAL SPECIFICATIONS

ROBUST PROJECT Norwegian Public Roads Administration / Force Technology Norway AS

PERFORMANCE EVALUATION OF THE FREE-STANDING TEMPORARY BARRIER UPDATE TO NCHRP 350 TEST NO (2214TB-1)

Evaluation and Design of ODOT s Type 5 Guardrail with Tubular Backup

Technical Report Documentation Page Form DOT F (8-72) Reproduction of completed page authorized

PERFORMANCE EVALUATION OF THE FREE-STANDING TEMPORARY BARRIER UPDATE TO NCHRP 350 TEST NO WITH 28" C.G. HEIGHT (2214TB-2)

TEXAS TRANSPORTATION INSTITUTE THE TEXAS A & M UNIVERSITY SYSTEM COLLEGE STATION, TEXAS 77843

TEXAS TRANSPORTATION INSTITUTE THE TEXAS A & M UNIVERSITY SYSTEM COLLEGE STATION, TEXAS

Safe-Stop TMA (Truck Mounted Attenuator) GENERAL SPECIFICATIONS

MINIMUM EFFECTIVE LENGTH FOR THE MIDWEST GUARDRAIL SYSTEM

MASH TEST 3-37 OF THE TxDOT 31-INCH W-BEAM DOWNSTREAM ANCHOR TERMINAL

NCHRP Report 350 Crash Testing and Evaluation of the S-Square Mailbox System

VULCAN BARRIER TL-3 GENERAL SPECIFICATIONS

VULCAN BARRIER TL-3 GENERAL SPECIFICATIONS

MASH TEST 3-11 OF THE TxDOT SINGLE SLOPE BRIDGE RAIL (TYPE SSTR) ON PAN-FORMED BRIDGE DECK

RSA Protective Technologies

MASH TEST 3-21 ON TL-3 THRIE BEAM TRANSITION WITHOUT CURB

CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH Anti-Ram Bollards

CRASH TEST REPORT FOR PERIMETER BARRIERS AND GATES TESTED TO SD-STD-02.01, REVISION A, MARCH Anti-Ram Bollards

PERFORMANCE EVALUATION OF THE PERMANENT NEW JERSEY SAFETY SHAPE BARRIER UPDATE TO NCHRP 350 TEST NO (2214NJ-2)

Evaluation of the Midwest Guardrail System Stiffness Transition with Curb

FAAC International, Inc.

Vehicle Crash Tests of Concrete Median Barrier Retrofitted with Slipformed Concrete Glare Screen

On Site Side Air Curtain Investigation / Vehicle to Vehicle Dynamic Science, Inc. / Case Number: DS Lexus GS300 California June, 2002

NCHRP REPORT 350 TEST 4-12 OF THE MASSACHUSETTS S3-TL4 STEEL BRIDGE RAILING MOUNTED ON CURB AND SIDEWALK

Electronic Reporting

CRASH TEST AND EVALUATION OF TEMPORARY WOOD SIGN SUPPORT SYSTEM FOR LARGE GUIDE SIGNS

End Terminals Installation and Repair Manual SMAT2 SMAT4

PERFORMANCE EVALUATION OF THE MODIFIED G4(1S) GUARDRAIL UPDATE TO NCHRP 350 TEST NO WITH 28" C.G. HEIGHT (2214WB-2)

Performance Level 1 Bridge Railings

Rotational Kinematics and Dynamics Review

TECHNICAL NOTE. NADS Vehicle Dynamics Typical Modeling Data. Document ID: N Author(s): Chris Schwarz Date: August 2006

CRITICAL FLARE RATES FOR W-BEAM GUARDRAIL DETERMINING MAXIMUM CAPACITY USING COMPUTER SIMULATION NCHRP 17-20(3)

Transportation Institute

Sponsored by Roadside Safety Research Program Pooled Fund Study No. TPF-5(114)

Midwest Guardrail System Without Blockouts

DEVELOPMENT OF A TRANSITION BETWEEN FREE-STANDING AND REDUCED-DEFLECTION PORTABLE CONCRETE BARRIERS PHASE I

MASH TEST 3-10 ON 31-INCH W-BEAM GUARDRAIL WITH STANDARD OFFSET BLOCKS

RCAR Bumper Test. Issue 2.1. February 2018

PRODUCT DESCRIPTION. X-Tension DS. is suitable for all road types: Motorways, country roads, city streets for speed categories up to 110 km/h.

June 27, In Reply Refer To: HSSD/B-176

Development of a Low-Profile Portable Concrete Barrier

Non Penetrating Mast Mount for 2.4M Antennas

Jaroslav Maly & team CAE departament. AV ENGINEERING, a.s.

Crash Testing Growth Common Roadside Hardware Systems Draft FHWA and AASHTO Requirements for Implementing MASH 2015

SUMMARY CHANGES FOR NCHRP REPORT 350 GUIDELINES [NCHRP (02)] Keith A. Cota, Chairman Technical Committee on Roadside Safety June 14, 2007

SMART CUSHION INNOVATIONS

ASTM F TEST M30 ON THE RSS-3000 DROP BEAM SYSTEM

1200 New Jersey Ave., SE of Transportation Washington, D.C

COMPARISON OF THE IMPACT PERFORMANCE OF THE G4(1W) AND G4(2W) GUARDRAIL SYSTEMS UNDER NCHRP REPORT 350 TEST 3-11 CONDITIONS

DEVELOPMENT OF A MASH TL-3 MEDIAN BARRIER GATE

Pedestrian Autonomous Emergency Braking Test Protocol (Version II) February 2019

Advances in Simulating Corrugated Beam Barriers under Vehicular Impact

W-Beam Guiderail Transition from Light to Heavy Posts

November 16, 1998 Refer to: HNG-14. Mr. David Allardyce Mechanical Engineer B&B Electromatic Main Street Norwood, Louisiana 70761

Vehicle Dynamic Simulation Using A Non-Linear Finite Element Simulation Program (LS-DYNA)

1200 New Jersey Ave., SE of Transportation Washington, D.C

Development of a Low Profile Work Zone Barrier Using Impact Finite Element Simulation

SMART CUSHION INNOVATIONS

FALSE CLAIMS ACT COMPLAINT QUI TAM

safedirection.com.au Ref: PM 017/02

DIFFERENT BUSSES -COMPARISON-

July 17, In Reply Refer To: HSSD/B-176A

Pedestrian Autonomous Emergency Braking Test Protocol (Version 1) December 2018

Impact analysis of a vertical flared back bridge rail-to-guardrail transition structure using simulation

Side Curtain Air Bag Investigation Dynamic Science, Inc. (DSI), Case Number DS Subaru B9 Tribeca Nebraska May 2008

Advanced 208-Compliant Investigation/ Vehicle to Object Dynamic Science, Inc. / Case Number: DS Toyota Corolla S Four-Door Sedan California

Remote, Redesigned Air Bag Special Study FOR NHTSA S INTERNAL USE ONLY Dynamic Science, Inc., Case Number ( J) 1998 Ford Taurus station

Development and Validation of a Finite Element Model of an Energy-absorbing Guardrail End Terminal

Transcription:

Barrier Systems, Inc. RTS-QMB Longitudinal Barrier STI Project: QBOR1 Page 38 of 40 Appendix F (Continued) Figure F-3

t=.500sec 115 meters overall 37.1 Impact Severity (kj).. 141.6 Angle (deg).. 25 Speed (km/h) 101.5 Impact Conditions Figure 1. Summary of Results-Test #QBOR1 OCDI LF0020000 Interior Dummy(s) n/a Gross Static 1995 VDS LFQ-4 CDC 11FLEE4 Test Inertial. 1995 QBOR1 Exterior Vehicle Damage t= 1.0sec STI Project: Curb.. 2025 Mass (kg) Dynamic 673 Permanent 673 Model. 1981 Chevrolet 3/4 Ton Pick-up Test Article Deflection (mm) ASI 1.6 PHD (g's). 17.3 THIV (km/h) y-direction 17.2 x-direction -10.9 Ridedown Acceleration (g's) y-direction -7.7 x-direction 8.4 Impact Velocity (m/s) Occupant risk Values Designation 2000 kg Type Production Model Test Vehicle width 610mm, mass 726 kg. of key elements. CRTS Section length 1000mm, height 813mm, Size and/or dimension and material Installation Length 18" CRTS/QMB Longitudinal Barrier Type. Barrier Systems, Inc. Test Article Date. 4/9/2004 Test No QBOR1 Angle (deg) n/a Exit Conditions t=.400sec Speed (km/h) n/a t=.200sec Page 12 of 40 Test Designation NCHRP Report 350 Test 3-11 t=.100sec QBOR1 STI Project: Test Agency SAFE TECHNOLOGIES, INC. General Information t=0.000 sec RTS-QMB Longitudinal Barrier Barrier Systems, Inc. Barrier Systems, Inc. RTS-QMB Safety Barrier Page 12 of 54

Barrier Systems, Inc. RTS-QMB Longitudinal Barrier STI Project: QBOR1 Page 38 of 40 Appendix F (Continued) Figure F-3

t=0.000 sec t=0.100 sec t=0.300 sec t=0.500 sec t=0.600 sec t=0.740 sec afe Technologies, Inc. 75 m Overall (46 18" CRTS Sectioins) Sections 1 through 25- Deflected Center of vehicle intersects center of article at section 11-12 Impact at Section 9 58cm Maximum Deflection at Section 13 VLB 25 7m 29 Sections of 12" SRTS upstream 25.0 deg 39 m (final position) 7.1 deg (exit) NOTE: Both ends terminated with 1000 psi tension NET General Information Exit Conditions Test Agency SAFE TECHNOLOGIES, INC. Speed (km/h) 66.3 Test Designation NCHRP 350 3-11 Angle (deg) 7.1 Test No RTS01-18" TRS/QMB Occupant risk Values Date. 4/19/00 Impact Velocity (m/s) Test Article x-direction..5.9 Type. Barrier Systems, Inc. y-direction..-6.8 CRTS Longitudinal Barrier Ridedown Acceleration (g's) Installation Length. 46 meters (75 meters overall) x-direction..-7.1 Size and/or dimension and material y-direction..13.9 of key elements. Section length 1000mm, height 822mm, THIV (m/s) 8.6 width 457mm, mass 700kg PHD (g's). 16.6 Test Vehicle ASI 1.3 Type Production Model Designation 2000P Model. 1988, Chevrolet 3/4 Ton Pickup Vehicle Damage Mass (kg) Exterior Curb.. 1895 VDS Fl-4 Test Inertial.. 1998 CDC 11FLEE3 Dummy(s) n/a Interior Gross Static 1998 OCDI..AS0000000 Impact Conditions Post-Impact Vehicular behavior (deg - gyro @ c.g.) Speed (km/h) 98.9 Maximum Roll Angle -12.8 (2 deg at exit) Angle (deg).. 25 Maximum Pitch Angle.. -4.4 (-2 deg at exit) Impact Severity (kj) 135 Maximum Yaw Angle 40 (32 deg at exit) Figure 1. Summary of Results CRTS Test #RTS01 RTS-QMB Test Results Page 6

afe Technologies, Inc. t=0.000 sec t=0.100 sec t=0.200 sec t=0.300 sec t=0.400 sec t=0.500 sec 83 m Overall (42 18" CRTS Sectioins) Sections 4 through 18 Deflected Center of vehicle intersects center of article at sections 11-12 Impact at Section 9 54 cm Maximum Deflection at Sections14 1 m 20 41 Sections of 18" SRTS upstream NOTE: Upstream end terminated under tension 20.0 deg 32 m (final position) 7.4 deg (exit) NET General Information Exit Conditions Test Agency SAFE TECHNOLOGIES, INC. Speed (km/h) 70 Test Designation NCHRP 350 3-10 Angle (deg) 7.4 Test No RTS02 Occupant risk Values Date. 4/19/00 Impact Velocity (m/s) Test Article x-direction. 4.5 Type. Barrier Systems, Inc. y-direction. -7.8 18" CRTS-QMB Longitudinal Barrier Ridedown Acceleration (g's) Installation Length. 42 meters (83 meters overall) x-direction. -8.3 Size and/or dimension and material y-direction. 18.2 of key elements. Section length 1000mm, height 822mm, THIV (m/s) 8.6 width 457mm, mass 700kg PHD (g's). 19.9 Test Vehicle ASI 1.39 Type Production Model Designation 820C Model. 1990, Ford Festiva Vehicle Damage Mass (kg) Exterior Curb.. 795 VDS LFQ-3 Test Inertial.. 837 CDC 11FLEE2 Dummy(s) 75 Interior Gross Static 912 OCDI. AS0000000 Impact Conditions Post-Impact Vehicular behavior (deg - gyro @ c.g.) Speed (km/h) 104.7 Maximum Roll Angle -16.1 (-14 deg at exit) Angle (deg).. 20 Maximum Pitch Angle.. -8.1 (-6 deg at exit) Impact Severity (kj) 41.4 Maximum Yaw Angle -68.4 (28 deg at exit) Figure 6. Summary of Results CRTS Test #RTS02 RTS-QMB Test Results Page 13 Page 2

afe Technologies, Inc. t=0.000 sec t=0.100 sec t=0.300 sec t=0.500 sec t=0.700 sec t=1.0 sec NOTE: Overhead high speed video for RTS03 was lost due to technical dificulities 75 m Overall (45 18" CRTS Sectioins) Sections 1 through 27- Deflected Center of vehicle intersects center of article at section 10-11 Impact at Section 9 VLB 61 cm Maximum Deflection at Section 12-13 25 30 Sections of 12" SRTS upstream 25.0 deg 35 m (final position) 4.6 deg (exit) 11m NOTE: Both ends terminated with 1000 psi tension NET General Information Exit Conditions Test Agency SAFE TECHNOLOGIES, INC. Speed (km/h) 66.3 Test Designation NCHRP 350 3-11 Angle (deg) 7.1 Test No RTS03 Occupant risk Values Date. 4/28/00 Impact Velocity (m/s) Test Article x-direction. 5.9 Type. Barrier Systems, Inc. y-direction. -6.8 CRTS Longitudinal Barrier Ridedown Acceleration (g's) Installation Length. 45 meters (75 meters overall) x-direction. -7.1 Size and/or dimension and material y-direction. 13.9 of key elements. Section length 1000mm, height 822mm, THIV (m/s) 8.6 width 457mm, mass 700kg PHD (g's). 31.1 Test Vehicle ASI 1.3 Type Production Model Designation 2000P Model. 1990, Chevrolet 3/4 Ton Pickup Vehicle Damage Mass (kg) Exterior Curb.. 1895 VDS Fl-4 Test Inertial.. 1998 CDC 11FLEE3 Dummy(s) n/a Interior Gross Static 1998 OCDI. AS0000000 Impact Conditions Post-Impact Vehicular behavior (deg - gyro @ c.g.) Speed (km/h) 98.9 Maximum Roll Angle -13.8 (at exit) Angle (deg).. 25 Maximum Pitch Angle.. -2.9 (at exit) Impact Severity (kj) 135 Maximum Yaw Angle 40 (28 deg at exit) Figure 11. Summary of Results CRTS Test #RTS03 RTS-QMB Test Results Page 20 Page 3

afe Technologies, Inc. t=0.000 sec t=0.100 sec t=0.200 sec t=0.300 sec t=0.500 sec t=0.700 sec 75 m Overall Sections 28 through 52- Deflected Center of vehicle intersects center of article at section 40-41 Impact at Section 38 70 cm Maximum Deflection at Section 40-41 VLB 25 8.5m 25.0 deg 41 m (final position) 8.5 deg (exit) NOTE: Both ends terminated with 1000 psi tension NET General Information Exit Conditions Test Agency SAFE TECHNOLOGIES, INC. Speed (km/h) 68 Test Designation NCHRP 350 3-11 Angle (deg) 8.5 Test No RTS04 Occupant risk Values Date. 5/3/00 Impact Velocity (m/s) Test Article x-direction. 5.1 Type. Barrier Systems, Inc. y-direction. -7.2 SRTS Longitudinal Barrier Ridedown Acceleration (g's) Installation Length. 75 meters overall x-direction. -11.6 Size and/or dimension and material y-direction. 10 of key elements. Section length 1000mm, height 822mm, THIV (m/s) 7.9 width 305mm (at base 610mm), mass 686kg PHD (g's). 16.7 Test Vehicle ASI 1.22 Type Production Model Designation 2000P Model. 1988, Chevrolet 3/4 Ton Pickup Vehicle Damage Mass (kg) Exterior Curb.. 2035 VDS FLQ-4 Test Inertial.. 1997 CDC 11FLEE3 Dummy(s) n/a Interior Gross Static 1997 OCDI. AS0000000 Impact Conditions Post-Impact Vehicular behavior (deg - gyro @ c.g.) Speed (km/h) 99.2 Maximum Roll Angle 11.4 (6 deg at exit) Angle (deg).. 25 Maximum Pitch Angle..4.2 (-4 deg at exit) Impact Severity (kj) 135 Maximum Yaw Angle 47.7 (36 deg at exit) Figure 16. Summary of Results SRTS Test #RTS04 RTS-QMB Test Results Page 27 Page 4

TB 990901 Rev. 3 Page 1 TB of 990901 4 Rev. 3 Page 1 of 4 Concrete Reactive Tension System-Quickchange Moveable Barrier (CRTS-QMB) Specification The Concrete Reactive Tension System-Quickchange Moveable Barrier (CRTS-QMB) is designed to meet the rigid requirements of deployment in moveable barrier applications where positive separation technology is required and where lane widths and lateral space are limited. Description Each barrier element of the CRTS-QMB shall be 32" (810 mm) high, 18" (460 mm) wide and 39" (1000 mm) long (Attachment, Figure 1, B000711). The individual elements shall weigh approximately 1500 pounds (680 kg) and rest on four rubber feet to increase the coefficient of friction between the barrier element and the road surface. The barrier elements are connected in an end-to-end fashion with tensioning hinge mechanisms and steel pins that are at least 1.3 " (33 mm) in diameter. The minimum length of CRTS-QMB to create a longitudinal barrier is 100 feet (30 meters). Each end of the CRTS-QMB must be anchored to the roadway with an anchorage that is capable of reacting a 100,000-pound (450,000 Newton) tensile load in the barrier for NCHRP TL-3 installations or capable of at least a 50,000 pound (225,000 Newton) tensile load in the barrier for an NCHRP TL-2 installation, in order to perform with the minimum deflection characteristics. If the end of the CRTS-QMB is not anchored to the roadway a minimum length of 80 sections must be deployed upstream of the point where minimum deflection is required for a TL-3 system, or 40 sections must be deployed upstream of the point where minimum deflection is required for a TL-2 system.. Minimum deflection characteristics for the CRTS-QMB system are shown in the attached RTS- QMB Deflection Curve.

TB 990901 Rev. 3 Page 2 of 4 Materials The primary elements of the CRTS-QMB shall be constructed of ASTM, A- 36 steel and high strength concrete. All external steel shall be stainless steel or hot dipped galvanized in accordance with ASTM, A 123. All structural welds shall be continuous. CONSTRUCTION METHODS: Barriers will be manufactured by either the wetcast or drycast methods. Minimum concrete 28-day compressive strength shall be 4,000 psi. All surface voids or rock pockets shall be repaired. Surface bugholes caused by trapped air bubbles shall be permitted. Air entrainment shall be as specified by the ordering agency, +/- 1.50 %. System Requirements The CRTS-QMB system, when installed in accordance with the manufacturers instructions, shall function as a longitudinal barrier and be able to resist the impact of vehicles in accordance with the National Cooperative Highway Research Program Report 350 (NCHRP 350) Test Level 3. The system shall minimize lateral displacement upon impact. The system shall minimize clearance between barrier hinges, resulting in a nominal metal to metal connection. During impact by an errant vehicle, the tension in the barrier system resists the penetration of the vehicle and limits the lateral displacement of the barrier. Reactive Tension System Variable Length Barriers (RTS-VLBs) shall be added to the length of the CRTS-QMB installation in order to allow a smooth lateral transfer through the Barrier Transfer Machine. The number and location of QVLB units that shall be required will vary depending on specifics of the application, number and degree of curves, changes in elevation, etc.

TB 990901 Rev. 3 Page 3 of 4

TB 990901 Rev. 3 Page 4 of 4

TB 001204 Rev. 1 Page 1 of 3 Narrow Steel Shelled-Quickchange Moveable Barrier (NSS-QMB) Specification The Narrow Steel Shelled-Quickchange Moveable Barrier (NSS-QMB) is designed to meet the rigid requirements of deployment in moveable barrier applications where positive separation technology is required and where lane widths and lateral space may be limited, or maximum durability is required. Description The barrier elements shall be 32 (810 mm) high, 39 (1000 mm) in length, and 13 (330 mm) wide. The profile is 13 (330 mm) wide except for a heavy steel base, which shall be 24 (610 mm) wide. The barrier shall allow for the incorporation of a lane line at the intersection of the base and the vertical section. The small protrusion of the base shall provide an audible signal upon contact by an errant vehicle s tire (Attachment Figure 1, B001204). The individual elements shall weigh approximately 1600 pounds (725 kg) and shall rest on four rubber feet to increase the coefficient of friction between the barrier element and the road surface. The barrier elements are connected in an end-to-end fashion with tensioning hinge mechanisms and steel pins that are at least 1.3 " (33 mm) in diameter. Each end of the NSS-QMB must be anchored to the roadway with an anchorage that is capable of reacting a 100,000-pound (450,000 Newton) tensile load in the barrier for NCHRP TL-3 installations or capable of at least a 50,000 pound (225,000 Newton) tensile load in the barrier for an NCHRP TL-2 installation, in order to perform with the minimum deflection characteristics. If the end of the NSS-QMB is not anchored to the roadway a minimum length of 80 sections must be deployed upstream of the point where minimum deflection is required for a TL-3 system, or 40 sections must be deployed upstream of the point where minimum deflection is required for a TL-2 system. Materials The primary elements of the NSS-QMB shall be constructed of ASTM, A-36 steel and high strength concrete. All external steel shall be hot dipped galvanized in accordance

TB 001204 Rev. 1 Page 2 of 3 with ASTM, A 123. All structural welds shall be continuous. The shell shall be constructed of 0.25 (6.4 mm) A-36 steel. System Requirements The NSS-QMB system, when installed in accordance with the manufacturers instructions, shall function as a longitudinal barrier. Narrow Steel Shelled Variable Length Barriers (NSS-VLBs) shall be added to the length of the NSS-QMB installation in order to allow a smooth lateral transfer through the Barrier Transfer Machine. The number and location of NSS-VLB units that shall be required will vary depending on specifics of the application, number and degree of curves, changes in elevation, etc.

TB 001204 Rev. 1 Page 3 of 3