• COMPLIANT WORK ZONE


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    • Abstract: COMPLIANT WORK ZONETRAFFIC CONTROL DEVICELISTTraffic Operations DivisionJune 2009© by Texas Department of Transportationall rights reserved THIS PAGEINTENTIONALLYLEFT BLANK Compliant Work Zone Traffic Control Devices 6-2009 Edition

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COMPLIANT WORK ZONE
TRAFFIC CONTROL DEVICE
LIST
Traffic Operations Division
June 2009
© by Texas Department of Transportation
all rights reserved
THIS PAGE
INTENTIONALLY
LEFT BLANK
Compliant Work Zone Traffic Control Devices 6-2009 Edition
TABLE OF CONTENTS
A. INTRODUCTION.......................................A-1 I. PLASTIC DRUMS.......................................I-1
1. Plastic Drums...........................................I-1
B. DEFINITIONS ............................................B-1 2. Sign Substrates.........................................I-2
C. TYPE-I BARRICADES .............................C-1 J. SIGNS & SIGN SUPPORTS ......................J-1
1. Folding Type-I Barricade Systems .........C-1 1. Permanent ................................................J-1
2. A-Frame Type-I Barricade Systems .......C-2 2. Long-Term / Intermediate-Term ..............J-1
3. Skid-Mount Type-I Barricade Systems ..C-3 a. Portable .............................................J-1
b. Post-Type...........................................J-4
D. TYPE-III BARRICADES ..........................D-1 c. Wheeled.............................................J-6
1. Type-III Barricades.................................D-2 d. Sign Substrates..................................J-6
a. Type-III Barricade Systems .............D-2 3. Short-Term / Short-Duration ...................J-7
b. Type-III Barricade Systems for road a. Portable .............................................J-7
closures ............................................D-2 b. Sign Substrates ................................J-11
2. Type III Barricade Systems....................D-2
a. Rails .................................................D-2 K. TEMPORARY MAILBOXES...................K-1
b. Supports (Skid-Type).......................D-3
c. Stiffeners ..........................................D-4 L. TRUCK-MOUNTED ATTENUATORS ...L-1
d. Mid-rail Stiffeners............................D-5
e. Skids.................................................D-5 M. PORTABLE TRAFFIC SIGNALS...........M-1
f. Posts .................................................D-6
g. Long-Term .......................................D-6 N. GLARE SCREEN .......................................N-1
E. DIRECTIONAL INDICATING O. END TREATMENTS FOR CTB ..............O-1
BARRICADES ............................................E-1
P. WATER FILLED BARRIERS AND
F. VERTICAL PANELS..................................F-1 CHANNELIZING DEVICES ....................P-1
1. Rigid Vertical Panels...............................F-1 1. Barriers....................................................P-1
a. Driveable Supports ...........................F-1 2. Longitudinal Channelizing Devices........P-1
b. Substrates..........................................F-1
c. Portable.............................................F-1 APPENDIX A. - PRODUCTS REMOVED
2. Self-Righting Vertical Panels..................F-3 FROM THE CWZTCD LIST
G. EDGELINE CHANNELIZERS ................G-1 PRODUCT & INFORMATION SOURCES
H. CONES.........................................................H-1
1. One-Piece Cones ....................................H-1
2. Two-Piece Cones....................................H-1
Compliant Work Zone Traffic Control Devices 6-2009 Edition
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Compliant Work Zone Traffic Control Devices A. Introduction
A. INTRODUCTION
This list contains products that have been evaluated and determined to be acceptable traffic control devices
for use in work zones. Devices on this list must, as a minimum, be considered to be compliant to the criteria stated
in NCHRP Report 350: Recommended Procedures for the Safety Evaluation of Highway Features (NCHRP 350)
that is available from the Transportation Research Board.
This list is intended to supplement and clarify the Traffic Control Standard Sheets (TCSS) by providing
the most up-to-date information available. All devices shall comply with the current Texas Manual on Uniform
Traffic Control Devices (TMUTCD).
Dimensions given in this document are nominal and are given merely for descriptive purposes.
Inclusion on this list does not imply that these products are eligible for permanent installation on state
right-of-way. This list is not exhaustive; crashworthy products exist that are not included herein. TxDOT will con-
sider products for inclusion if sufficient information is provided to make a decision. For a product to be evaluated
for inclusion on this list, all related data such as an evaluation report prepared by an independent testing agency
under the supervision of a registered professional engineer, video tape of crash test (if crash tested), compliance let-
ter from the FHWA, etc. must be sent to the TxDOT Traffic Standards Engineer. DO NOT send originals; the docu-
mentation submitted shall not be returned. TxDOT reserves the right to review all documentation and may or may
not accept the device for inclusion on this list. The fact that FHWA considers a device to be compliant with
NCHRP 350 does not obligate TxDOT to include that device on this list. TxDOT reserves the right to remove prod-
ucts, with sufficient cause, at any time. If a product is rejected or removed, a letter notifying of the rejection or
removal and stating the specific reasons will be sent to the listed product source(s). The product source(s) may
address TxDOT’s concerns that caused the rejection or removal of the product and resubmit it for TxDOT’s further
consideration.
The devices in each category are generally listed in alphabetical order by vendor. The order is not intended
to indicate a particular device preference. TxDOT does not endorse products. This list shall not be used for prod-
uct promotion.
TxDOT recognizes that some of the items and information it needs to evaluate a device’s compliance with
NCHRP 350 may be proprietary and, as such a petitioner may want them to be held in confidence. Within the limits
of law, TxDOT will honor written requests for confidentiality.
For information concerning this document, clarification or interpretation of items contained herein, or for
further information on submitting a device for consideration, contact the Traffic Standards Engineer.
This list addresses only the crashworthiness of the devices. When maximum sign sizes or maximum num-
ber of supports are given, they shall be adhered to. It is the responsibility of the contractor to determine which sup-
port is appropriate for a given sign size, location, and soil condition. A device considered crashworthy may not be
crashworthy if used or installed incorrectly. It is the contractor’s responsibility to use or install the device in a
manner such that it will function as intended.
The Engineer, through a General Note in the Plans, may disallow the use of specific devices on this list or
require that specific devices from this list be used. A proprietary device should not be used unless: (a) the device is
supplied through a competitive bidding with equally suitable unpatented items; (b) TxDOT certifies that they are
essential for synchronization with existing highway facilities or that no equally suitable alternative exists; or (c)
they must be used for research or for a distinctive type of construction on relatively short sections of road for
experimental purposes. The Engineer shall not require the use of a device, of the types included herein, that is not
on this list.
TxDOT A-1 6-09
Compliant Work Zone Traffic Control Devices A. Introduction
TxDOT encourages the use of recycled products when possible. Plastic products shall be UV/color-stabi-
lized.
All reflective sheeting shall as a minimum meet either one of the following Departmental Material
Specifications: DMS-8300, Flat Surface Reflective Sheeting or DMS-8310, Flexible Roll-up Reflective Signs. When
the sheeting used on a particular device exceeds the requirements of these specifications, all similar devices used in
that area shall use equivalent sheeting (e.g., all drums should use an equivalent grade of sheeting).
TxDOT A-2 6-09
Compliant Work Zone Traffic Control Devices B. Definitions
B. DEFINITIONS
ASTM American Society for Testing and Materials. This organization publishes many specifications. They are ref-
erenced by number of the form “ASTM LXXX-Year” (e.g., ASTM C387-95) and are available from their
website: www.astm.org.
backfill soil that was originally in the hole dug for support placement that is used to refill the hole after the sup-
port is placed.
barricade - a portable or fixed channelizing device having from one to three rails with appropriate markings (see
the Texas Manual on Uniform Traffic Control Devices for more details). Barricades are used to control traffic by
closing, restricting, or delineating all or a portion of the roadway. The type refers to the number of rails (i.e., a
Type I has one rail, a Type II has two rails, and a Type-III has three rails). See Figure B-1 for a description of bar-
ricade components.
Rail Mid Stiffener
Stiffener
Support
Skid
Figure B-1. Barricade component terminology.
BC sheets Barricade and Construction Standards are a section of the Traffic Control Standard Sheets (TCSS) that
are available on the internet at http://www.txdot.gov/business/disclaim.htm.
concrete, premixed normal strength / normal weight concrete complying with ASTM C387-95 Standard
Specification for Packaged, Dry, Combined Materials for Mortar and Concrete. Most prepack-
aged concrete mixes comply with this specification.
DMS TxDOT Departmental Material Specifications are referenced by numbers in the form “DMS-XXXX” (e.g.,
DMS-8310). In some older publications, the reference number may be in the form “D-9-XXXX”. These
numbers are available from the TxDOT Construction Division or from the TxDOT website: www.txdot.gov.
embedment, direct placed in the original soil by driving or by creating a hole and backfilling.
FHWA Federal Highway Administration.
FRP fiberglass reinforced plastic.
HDPE high density polyethylene.
HPPL hollow profile plastic lumber - hollow core plastic boards with dimensions similar to that of lumber.
LDPE low density polyethylene.
PSST – perforated square steel tubing.
TxDOT B-1 6-09
Compliant Work Zone Traffic Control Devices B. Definitions
Part 6 of the TMUTCD Texas Manual on Uniform Traffic Control Devices - Part 6, Temporary Traffic Control.
soilcrete backfill stabilized by mixing with portland cement.
SMD sheets Sign Mounting Details are a section of the Traffic Control Standard Sheets (TCSS) that are available
on the internet at http://www.txdot.gov/business/disclaim.htm.
substrate component of the sign to which the retroreflective sheeting is affixed.
SYP, No. 2 No. 2 southern yellow pine. Different species and grades with similar structural properties may be
used. For purposes of this list, these equivalent species/grades are:
No. 2 Southern Pine.
No. 2 Douglas Fir.
No. 1 Western Hemlock.
No. 2 Ponderosa Pine.
No. 2 Red Pine.
No. 1 Western Red Cedar.
SPL solid plastic lumber.
TCSS Traffic Control Standard Sheets are available on the internet at
http://www.txdot.gov/business/disclaim.htm.
TMUTCD Texas Manual on Uniform Traffic Control Devices available on the internet at
http://www.txdot.gov/publications/traffic.htm.
TRF – TxDOT Traffic Operations Division.
TxDOT Texas Department Of Transportation.
UV/color-stabilized denotes a plastic which has chemicals added during the manufacturing process that signifi-
cantly reduces plastic degradation and color fading caused from exposure to ultraviolet light
(i.e., sunlight).
work, duration of There are five categories for duration of work:
long-term - work that occupies a location more than 3 days.
intermediate-term - work that occupies a location more than one daylight period up to 3 days, or night-
time work lasting more than 1 hour.
short-term - daytime work that occupies a location for more than 1 hour within a single daylight period.
short duration - daytime work that occupies a location up to one hour.
mobile - work that moves continuously or intermittently (stopping up to approximately 15 minutes).
TxDOT B-2 6-09
Compliant Work Zone Traffic Control Devices C. Type-I Barricades
C. TYPE-I BARRICADES
Type-I barricades shall comply with the requirements of the current Texas Manual on Uniform Traffic
Control Devices (TMUTCD). Warning lights shall not be attached to barricades. Barricades shall be no greater
than 8 feet in length.
C.1. Folding Type-I Barricade Systems
Hollow-Profile Plastic Lumber (HPPL), 2 x 4 HPPL uprights and 1 x 8 HPPL, 1 x 8 wood or plywood
rails (Figure C-1). Wood shall be No. 2 SYP or equivalent. Plywood shall be 5/8-inch x 8-inch marine
grade, CCA pressure treated, CDX or similar plywood with water resistant glue. Paint all wood surfaces
white if not covered by reflective sheeting. Plastic components are available from:
Aeolian Enterprises.
Centerline Supply, Inc.
Fender Enterprises, Inc.
Three D Traffic Works, Inc.
2 1/2" 2 1/2"
48"
1"
3"
3/8" bolt or pin
12" 24" 1x8
wood 39"
rail 2" x 4"
hollow core
plastic support
32" 1x6
wood
rail
Figure C-1. Generic folding Type-I Barricade made from HPPL
Folding barricade with steel legs and plastic or plywood rails (BENT Manufacturing Co).
Universal Plastic Barricade (BENT Manufacturing Company).
Plank-A-Cade folding plastic barricade (Flasher Flare South East, Inc.).
Fibercade folding plastic barricade (Plasticade Products).
Plastic Barricade Model PRB-124 (Service & Materials Co. (Flex-O-Lite)).
TD2000 Barricade with steel legs and plastic or plywood rails (Three D Traffic Works, Inc.).
TD2000 all-plastic barricade (Three D Traffic Works, Inc.).
TD3000 configured as a Type I or Type II barricade only using only rails contained on this list.
Components are not be used as a sign support. (Three D Traffic Works, Inc.).
Economy plastic folding barricade (TrafFix Devices, Inc.).
High-Impact plastic folding barricade (TrafFix Devices, Inc.).
High-Impact plastic panel and steel leg (12 and 14 ga.) folding barricade (TrafFix Devices, Inc.).
TxDOT C-1 6-09
Compliant Work Zone Traffic Control Devices C. Type-I Barricades
C.2. A-Frame Type-I Barricade Systems
Wood, two 2 x 6 A-frames with 1x8 rail (Figure C-2). Wood shall be No. 2 SYP or equivalent.
35"
48" min. 4 3/4"
96" max. 1 1/8"
5
1 x 8 rail 1 x 6 cleat (each side) 7 1/2" 12
2 x 6 legs 36"
1 x 4 horizontal braces 12"
Members may be connected by through-bolting or with screws.
Figure C-2. Generic wooden A-frame Type-I Barricade
Hollow-profile plastic lumber (HPPL), 1 x 8 rail, 2 x 6 legs, and 1 x 4 braces (Figure C-3). This barricade
shall be a minimum of 36 inches and a maximum of 42 inches tall. The rail may vary from
4 to 8 feet in length.
48" min. 37"
96" max. 15"
4 1/2" 4 1/2"
1" x 8" HPPL rail
1" x 4" HPPL horizontal braces
42"
1" x 4" HPPL spacers 28"
1 1/2" x 6" HPPL legs 7"
Plastic members may be connected by through-bolting or with screws.
Figure C-3.Generic HPPL A-frame Type-I Barricade.
Parade Style A-Frame Barricade (Davidson Traffic Control Products).
A-frame plastic barricade (Fender Enterprises, Inc.).
A-frame plastic barricade (Flasher Flare South East, Inc.).
TD3000 configured as a Type I or Type II barricade only using only rails contained on this list.
Components are not be used as a sign support. (Three D Traffic Works, Inc.).
TrafFix-”A”-CADE™ rigid A-frame barricade system and TrafFix-RAIL™ or 1 x 8 No. 2 SYP (or equiva-
lent) (TrafFix Devices, Inc.).
TxDOT C-2 6-09
Compliant Work Zone Traffic Control Devices C. Type-I Barricades
C.3. Skid Mount Type-I Barricade
Type-I Skid mounted barricades (Figures C-4 and C-5) can be made with the same rails, supports, and
skids allowed for type-III barricades. A skid mount type-I barricade should be no more than 36 inches tall.
Stiffeners and mid-stiffeners are not needed for the construction of type-I barricades.
48" min.
96" max.
3/8" bolts
(2 per support) 1 1/2" perforated square
12 ga. metal tubing supports
1 3/4" perforated square
12 ga. metal tubing skids
weld Supports shall be connected
to skids with 3/8" bolts.
60"
Figure C-4. Generic perforated square metal tubing skid-mount Type-I Barricade.
4 x 4 wood or HPPL
spacer blocks
48" min.
96" max.
36"
1 x 8 wood or HPPL rail
4 x 4 HPPL support
(wood shall not be used) 36" 3/8"
bolt
Nails may be used to assemble skids.
all other connections must be screwed
or bolted together except were noted.
1 x 6 wood or HPPL skids
Figure C-5. Generic wood & HPPL skid-mount Type-I Barricade.
Pre-assembled type-I barricade (skid type) systems are available from:
Melba, USA - System ‘98™ Models M1B-1-24 and M2B-1-48 (Eastern Metal / USA Sign).
Fendercade type-I modular barricade system (Fender Enterprises, Inc.).
TrafFix-CADE™ modular barricade system (TrafFix Devices, Inc.).
HPPL barricade with rubber skids (Rad-Tec Fabricators, Inc.).
TxDOT C-3 6-09
Compliant Work Zone Traffic Control Devices C. Type-I Barricades
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TxDOT C-4 6-09
Compliant Work Zone Traffic Control Devices D. Type-III Barricades
D. TYPE-III BARRICADES
Type-III barricades shall comply with the requirements of the current Barricade and Construction
Standards (BC Sheets) and the current Texas Manual on Uniform Traffic Control Devices (TMUTCD). Warning
lights shall not be attached to barricades. Barricades shall be no greater than 8 feet in length.
A lower cross member (Figure D-1) is often needed on some barricade system with plastic rails. The pur-
pose of the rail is to provide structural support if the rails cannot. The presence or absence of the rail has no bear-
ing on the crashworthiness of the barricade
3/8" Dia. x Plastic I-Beam rails
1 1/2" square 1 3/4" square
3" long bolts perforated
(4 per rail) perforated support
tubing stiffner tubing
20"
(optional)
SEE 60" 6" 20" 60"
DETAIL A
1 3/4" square
perforated
29 1/2" tubing 20"
Skids
60" SEE 1 1/2" square
4' min., 8' max. perforated
NOTE: If flat rails are used, refer to DETAIL
Wood/Plastic Option for vertical B tubing
placement of rails
DETAIL B
DETAIL A Joining
Joining Plate
1 3/4" Tube
Sleeve Plate
(optional)
3/8" Dia. x 3/8" Dia. x 3/8" Dia. x
4 1/2" long bolt 4 1/2" long bolt 2 1/4" long bolt
3/8" Dia. x 6 1/2" 1/4" Dia. x
3" long bolts 1 3/4" Tube 1/4" Dia. x
2 1/2" Sleeve 2 1/2" long
long bolt (optional) bolts
Splice
Splice 3/8" Dia. x Plates
Plate 3" long bolts
SPLICE PLATE
1/2"
JOINING PLATE 1 1/2" PERFORATED
SQUARE STEEL TUBE
1" 7/16" Dia.
3/4"
0.105" 3" Radius
1 1/2" 1"
5/16" Dia.
7/16" Dia. 1/2" 1/2"
hole 7/16" Dia. 3/4" 2 1/8" 1 3/4"
5 1/8"
Figure D-1. Perforated square metal tubing barricade with plastic rails showing lower structural
cross member.
TxDOT D-1 6-09
Compliant Work Zone Traffic Control Devices D. Type-III Barricades
D.1. Type-III Barricade Systems
D.1.a. Type III Barricades
Type-III barricades may be obtained as complete units from the following:
BENT Manufacturing Company.
Davidson Plastics Corporation (Model T3B).
Eastern Metal / USA Sign
(Model B35-8EG-R and Melba, USA - System ‘98™ Model M2B-3, Melba “Long Board”).
Fender Enterprises, Inc. (Models 047HI).
Hwy Com, Inc.
IRS™ Type III Barricade.
PBS, Inc.
Rad-Tec Fabricators, Inc.
Recycled Plastic Products, Inc.
Services and Materials Company
Three D Traffic Works, Inc. (Model TD2000).
TrafFix Devices, Inc. (Models 5004-HI-2 & 5008-HI-2).
Western Highway Products, Inc. (Ulti-Mate Barricade).
D.1.b. Type III Barricades for road closures
Yodock Wall Co., Inc. (Barrier Model, 2001, Energy Dispersement Cell)
D.2. Type-III Barricade Components
D.2.a. Rails (Type-III Barricade)
Wood, 1 x 8 No.2 SYP or equivalent structurally equivalent grade.
Plywood, 1/2 or 5/8 inch x 8 inch. Marine Grade, CCA Pressure-Treated, CDX or similar plywood with
water-resistant glue are acceptable rail materials for contractor barricades. Use only Marine Grade ply-
wood for barricades that will remain after project completion. Paint all wood surfaces white if not covered
by reflective sheeting.
High-density polyethylene (HDPE), I-beam, 0.7 lb/ft maximum, 8-inch single thickness web, and hollow
core flanges.
TrafFix-RAIL (TrafFix Devices, Inc.) can be used alone or with TrafFix Device’s Rail Clip.
Hollow-profile plastic lumber (HPPL), 1 x 8 rectangular, 0.8 lb/ft max. May have internal stiffeners.
Aeolian Enterprises.
CenterLine Supply, Inc.
Eastern Metal / USA Sign.
Fender Enterprises, Inc.
Flasher Flare South East, Inc.
Itasca Plastics.
Plastic Safety Systems, Inc.
Recycled Plastic Products, Inc.
Services and Materials Company.
Three D Traffic Works, Inc.).
InteCell® 13 to 16 mm integral skin expanded foam PVC sheet. (Inteplast Group, Ltd.).
TxDOT D-2 6-09
Compliant Work Zone Traffic Control Devices D. Type-III Barricades
D.2.b. Supports (Skid-Type Type-III Barricade)
Fiberglass reinforced plastic (FRP) Pipe, 3-inch diameter, 1/8- inch wall thickness. Must meet DMS-4410,
Fiberglass Reinforced Plastic Sign Supports.
Hwy Com, Inc.
High-density Polyethylene (HDPE) Pipe, 3-3/4 inch diameter, 0.089-inch wall thickness.
Eastern Metal / USA Sign.
Hollow-profile plastic lumber (HPPL), 4 x 4 square, 0.6 lb/ft maximum.
Aeolian Enterprises.
Bufftech.
Fender Enterprises, Inc.
Plastic Safety Systems, Inc.
Recycled Plastic Products, Inc.
Steel tubing, perforated square metal, 1-1/2 inches square, 12 gauge.
Allied Tube and Conduit Corporation.
Fender Enterprises, Inc.
Ultimate Highway Sales, Inc.
Unistrut Corporation.
Western Highway Products, Inc.
Steel tubing, circular metal, 2-3/8 inches diameter with 0.080 or 0.095-inch wall thickness (thin wall).
Northwest Pipe Company or any other manufacturer.
X-tube, 1-3/4 inch square plastic with X-stiffener, 0.6 lb/ft maximum.
Centerline Supply, Inc.
Davidson Plastics Corporation.
1 1/4" hex head support 2 x 6 x 60"
self tapping screws stiffener plastic or wood
rail (optional and 4 x 4 x 60"
may be placed hollow core
on inside plastic support
of support)
20"
supports 2 x 4 x 36"
plastic or wood 60"
20"
6" 2 1/2" wood 4 x 4 x 6"
screws plastic
25" or wood
20"
Skids 30"
4' min., 8' max. 60"
Figure D-2. Wood/plastic Type-III Barricade.
TxDOT D-3 6-09
Compliant Work Zone Traffic Control Devices D. Type-III Barricades
FRP rail 5 x 5 x 60"
2 x 4 wood support hollow
stiffner (optional, and 5 1/2" poly-vinyl
may be placed on or 3"
the inside of support) supports fiberglass
16" tubing
15 1/2" 60"
16"
20"
48" Skid 36"
1/2" PVC
6 1/2" long
inserted through Optional FRP skid
support and base cross section
36" FRP "C" channel
or 5/8" x 5"
2 3/8" x 3" inverted
36" poly-vinyl U-channel
7/8" x 6"
Figure D-3. Plastic/fiberglass Type-III Barricade.
D.2.c. Stiffeners (Type-III Barricade)
Stiffeners are not required. The contractor may choose to use them if they aid in setting up or taking down
the barricade.
Wood, 2 x 4 No. 2 SYP or equivalent.
Hollow-profile plastic lumber (HPPL), 2 x 4 rectangular or 4 x 4 square, 0.6 lb/ft maximum.
Aeolian Enterprises.
Bufftech.
Fender Enterprises, Inc.
Plastic Safety Systems, Inc.
Recycled Plastic Products, Inc.
Steel tubing, perforated square metal, 1-1/2 inches square, 12 gauge.
Allied Tube and Conduit Corporation.
Fender Enterprises, Inc.
Ultimate Highway Sales, Inc.
Unistrut Corporation.
Western Highway Products, Inc.
Steel tubing, circular metal, 2-3/8 inches diameter with 0.080 or 0.095-inch wall thickness (thin wall).
Northwest Pipe Company or any other manufacturer.
Solid plastic lumber (SPL), 2 x 4 rectangular.
Metro Plastic Barricades.
Recycled Plastic Products, Inc.
X-tube, 1-3/4 inch square plastic with X-stiffener, 0.6 lb/ft maximum.
Centerline Supply, Inc.
Davidson Plastics Corporation.
TxDOT D-4 6-09
Compliant Work Zone Traffic Control Devices D. Type-III Barricades
plastic 3" FRP Post
3/8" carriage bolts or wood
rail 3" FRP Post
Steel
channel 5 1/2"
bracket
20"
3" 1"
20"
2 x 6 x 60"
plastic or wood
20" 60"
30" 2 x 6 x 4"
1/2" machine bolts plastic
60" or wood
4' min., 8' max.
Figure D-4. Wood/plastic/fiberglass Type-III Barricade.
D.2.d. Mid-rail Stiffeners (Type-III Barricade)
Mid-rail stiffeners are not required unless there is noticeable twisting of the rails due to lack of support.
Wood, 2 x 4 No. 2 SYP or equivalent.
Hollow-profile plastic lumber (HPPL), 2x 4 rectangular or 4 x 4 square, 0.6 lb/ft maximum.
Aeolian Enterprises.
Bufftech.
Fender Enterprises, Inc.
Plastic


Use: 0.4156