rs
rar

l, #6 A/06 x 2° 0" REBAR

STRUCTURAL TUBE
Ve" x 4° x 4° x 2-8"

PLAN VIEW @ TOP

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ees TYP. @ BOTH ENDS|
| 1 4d _ Bo WE He
| 189 « WB WE BAR -
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3 #6 A/06 x 3-0" rebar
‘>A 8
REINFORCEMENT DETAIL
2. LEGEND
SECTION A-A = H-8" REBAR _ SECTION BoB _

e
@ = 2 AND 3° REBAR

ROCKINGHAM PRECAST = |i

P.O. BOX |547 ® HARRISONALRG, VA 22801
PHONE 940-439-8282 * FAX 940-432-8150

P CHAPED MEDIAN BARRIER

DRAWN MAB | DRAWING COVERS

PAE 1-15-97 |CONIRACIOR

€4oO ¢

To manasatn..~



$635.41)

(hese materials must occur
United Btates.

(2) The State has standard contract
provisions that require the use of do-
meatic materials and products, includ.
ing steel mater to the same or
greater extent as the provisions set
forth in this section.

(3) The Btate elects to include alter-
nate bid provisions for foreign and do-
meatic steel materials which comply
with the following requirements. Any
procedure for obtaining alternate bids
based on furnishing foreign steel ma-
terials which is acceptable to the Divi-
sion Administrator may be used. The
contract provisions must (1) require all
bidders to submit a bid based on fur-
nishing domestic steel materials, and
i) clearly state that the contract will
be awarded to the bidder who submits
the lowest total bid based on furnish-
ing domestic steel materials unless
such total bid exceeds the lowest total
bid based on furnishing foreign steel
materials by more than 25 percent.

(4) When steel materials are used in
& project, the requirements of this sec-
tion do not prevent a minimal use of
foreign steel materials, if the cost of
such materials used does not exceed
one-tenth of one percent (0.1 percent)
of the total contract coat or $2,500,
whichever ts greater. For purposes of
this paragraph, the cost is that shown
to be the value of the steel products as
they are delivered to the project.

(cK1) A State may request a waiver
of the provisions of this section if;

) The application of those provi-
siona would be inconsistent with the
public interest; or

(i) Steel materials/products are not

in the United States tn suffi.
cient and reasonably available quant!
tles which are of « satisfactory quality.

(2) A request for waiver, accompa-
nied by supporting Information, must
be submitted in writing to the Region-

Federal Highway Administrator
tRFRWAD through the FHWA Divi-
sion Administrator. A request must be
submitted sufficiently in advance of
the need for the waiver In order to
allew time for proper review and
action on the request. The RFHWA
will have approval authority on the re-
Quest.

in the

23 CER Ch. | (4-13-93 Edition)

(3) Requests for walvers may be
made for apecific projects, or for cer-
tain materials or products in specific
geographic areas, or for combinations
of both, depending on the circum.
stances.

(4) The denial of the request by the
RFHWA may be appealed by the
State to the Federal Highway Admin-
istrator (Administrator), whose action
on the request shall be considered ad
ministratively final

(6) A request for a waiver which in
voives nationwide public Interest or
availability issues or more than one
FHWA region may be submitted by
the RFHWA to the Administrator for
action.

(6) A request for waiver and an
appeal (rom a denial of a request must
Include facts and justification to sup-
port the granting of the waiver. The
FHWA response lo a request or appeal
will be in writing and made available
to the public upon request. Any re-
quest for ® nationwide waiver and
FHW4A’'s action on such a request may
be published in the Fspera: Recistss
for public comment.

(7) In determining whether the waiv-
ers described in paragraph (cX1) of
thia section will be granted, the
FHWA will consider all appropriate
factors including, but not limited to.
cost, administrative burden, and delay
that would be imposed If the provision
were not waived.

(d) Standard State and Federal-ald
contract procedures may be used to
assure compliance with the require-
menta of this section.

a use. 316, sec. 10 of Pub. L. 96-229, 98
. 168 of Pub. L. 67-424, 96 Stat.
3ibs and 46 CPR 14acb))
(48 PR 63104, Nov. 28. 1983, as amended at
49 FR 16821, May 3, 1984)

6.636.451 Material or product selection.

(a) Federal funds shall not partici-
pate, directly or indirectly, in payment:
for any premium or royalty on any
patented or proprietary material, spec-
ification, or process specifically set
forth In the plans and specifications
for a project, unless:

(1) Buch patented or proprietary
item Is purchased or obtained through

180

Federal Highway Administration, DOT

competitive bidding with equally sulta-
ble unpatented items; or

(2) The Btate highway agency certi-
fles either that such patented or pro-
prietary item is essential for synchro.
nization with existing highway facil
tes, or that no equally suitable alter-
nate exists; or

(3) Buch patented or
item is used for research or for a ‘als.
tinctive type of construction on reia-
Uvely short sections of road for expert-
mental purposes.

(b) When there Is available for pur-
chase more than one nonpatented,
nonproprietary material, semifinished
or finished article or product that will
fulfill the requirements for an item of
work of a project and these available
materials or products are judged to be
of satisfactory quailty and equally ac-
ceptable on the basis of engineering
analysis and the anticipated prices for
the related item(s) of work are esti-
mated to be approximately the same,
the PS&E for the project shall either
contain or Include by reference the
specifications for each such material
or product that is considered accepta-
ble for incorporation in the work. If
the State highway agency wishes to
substitute some other acceptable ma-
terial or product for the material or
Product designated by the successful
bidder or bid as the lowest alternate,
and such substitution results in an in-
crease in costa, there will not be Feder-
al-ald participation in any increase in
costs.

(c) A Btate highway agency may re-
quire a specific material or product
when there are other acceptable mate-
rials and products, when such specific
choice is approved by the Diviaton Ad-
ministrator as being in the public in-
terest. When the Division Administra-
tor’s approval is not obtained, the item
will be nonparticipating unless bidding
procedures are used that establish the
unit price of each acceptable alterna-
tive. In this case Federal-aid participa-
tion will be based on the lowest price
wo established.

(d) Appendix A sets forth the
PHWA requirements regarding (1) the
specification of alternative types of
culvert pipes, and (2) the number and
types of such alternatives which must

$ 635.417

be set forth in the specifications for
various Lypes of drainage inetallationas.

(e) Reference in Heations and

(b) Contracts which involve furnish-
Ing and/or installing electrical or me-
should

those provided as ci
OF
(2) Contractors’ warranties or guar-
antees providing for satisfactory in-
service operation of the mechanical
and electrical equipment and related
components for a period not to exceed

@ months foll
ance lowing project accept-

94636.41T Convict produced materials.

wg, Monte Erie te ort
y
Federal-ald highway
project if such materials have been:
(1) Produced by convicts who are on

(2) Produced in a qualified prison fa-
cility and the cumulative annual
duction amount of such tor

struction during the 12-month period
ending July 1, 1967.

(b) Qualified prison factlity means
any prison facility in which convicts,

181

£ WaNsoIONa


| 6 46 AO x 2° 0" REBAR

V2 Ory ae

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| Joa A U6 x 3-0 REBAR

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| STRUCTURAL TUBE
6 #6 A706 x 2-0" REBAR

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SECTION

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' SCALE = I’ = 1-0

3 #6 A/06 x 3-0" REBAR —)

J 6 #6 A706 x 2-0" REBAR

1 [STRUCTURAL TUBE
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£407

TOA

ROCKINGHAM PRECAST

P.O. BOX 1547 ® HARRISONALRG, VA 2280}
PHONE 940-423-8282 * FAX 940-422-8120

vs“ ——SECTHIN, eee
SCALE = I = 1-0
smc |"P" SHAPED NEDIAN DRRRER

LOCATION

' minso

DRAWN AB | DRAWING COVERS

PREG -50-97

CONTRACTOR



He pang

teen eee e ee ‘Texas Transportation Institute

. 400001-APC1
0v22e7

Precast Concrete Median Barrier

Figure 10. Summary of results for test 400001-RPC1.

813-mm high F-shape CMB segments
connection

Impact Conditions
‘Speed (km)
‘Angie (deg)

Exit Conditions
Speed (km)
‘Angle (deg)

Occupant Risk Values

Impact Velocity (m/s)
x-direction
y-direction

Ridedown Accelerations (g's)
x-direction
y-direction

Max. 0.050-s Average (4's)
x-direction
y-direction
z-direction

98.14
20.00

a771
5.17

441
638

365
6.63

5.81
1058
255

+.» 0.20
- 0.18
TILFQ3
.. VIFLEKI
& MIFLEW2
(Maximum Exterior
Vehicle Crush (mm) ...... 225
Intertor
OCD!................ 0 ‘LFOOO0000
‘Max. Ooc. Compart.
Deformation (mm) ...... 23
(during 1.0 8 after impact)
‘Max. dll Angie (deg) 20
Max. Plich Angle (deg) W
Max. Yaw Angie (deg) ....... 29

@ dO 1

7 ANTAAnRH.-


US Department 400 Seventh St.. S.W.
of Transporation Washington. D.C. 20590
Federal Highway October 20, 1997

Administration

Refer to: HNG-14

Mr. Michael Budd

Vice President

Rockingham Precast

P.O. Box 1347

Harrisonburg, Virginia 22801

Dear Mr. Budd:

In your August 13 letter to Mr. James H. Hatton of my staff you requested Federal Highway
Administration's (FHWA) acceptance of the connection design used in your precast concrete
median barrier. This request was accompanied by a Texas Transportation Institute research
report dated July 1997, entitled "NCHRP Report 350 Compliance Tests on Rockingham
Precast Concrete Barriers,” and a videotape showing the full scale testing that was done.

In reviewing this information, we noted that the tested barrier consisted of 3658-mm long,
standard F shape concrete units. One end of each unit had an integral “T” shaped steel plate
cast into the concrete and the opposite end contained a slotted steel tube. In addition to the
steel in the connections, each unit contained three number 5 bars (number 16 metric) running
the length of each segment and lapped with the number 6 (number 18 metric) bars at each end
as shown in Enclosure 1. Two units are connected by lifting one unit and lowering it so that
the “T” in the end of one unit slides into the slot in the tube in the end of the other unit.

Three National Cooperative Highway Research Program (NCHRP) Report 350 tests were run
on a 47.55-m long installation. The first test (NCHRP Report 350 test 3-10) resulted in
acceptable performance with the containment and redirection of the 820-kg car impacting at a
nominal speed of 100 km/h and an angle of 20 degrees. The impact point was 10.14 m from
the upstream end. Permanent deflection was 180 mm. The second test, with a 2000-kg
pickup truck impacting at 100 km/h and at an angle of 25 degrees (NCHRP Report 350

test 3-11), resulted in the separation of the barrier as a result of severe damage to several of
the connections. The connections were redesigned (the final design is shown in Enclosure 1)
and the third test, a repeat of the 3-11 test, met all evaluation criteria. The impact point for
this test was 17.26 m from the upstream end. Permanent barrier deflection was 1150 mm.


y
oO

AR i.

Hee bape

General Information Impact Conditions Test Article Deflections (m)
Test Agency . Texas Transportation Institute ‘Speed (kmh) 101 87 Dynamic ............ . 1.24
Test No. we - 400001-APC3 ‘Angle (deg) 25 66 Permanent . 1.15
Dato... 06/17/07
Test Artie Exit Conditions Vehicle Damage
Type ...... . Precast Concrete Median Barrier ‘Speed (km/h) 80.62 Exterior
Manutacturer cee. Rockingham: Angle (deg) 10.23 VOS.......... ceceee. TILFQS
Installation Length (m)....... 3.66 each segment CDC... TIFLEKS
Occupant Risk Values & HILFEWS
813-mm high F-shape CMB Impact Velocity (m/s) Maximum Exterior
... Segment w/ T -shaped connection x-direction 5.33 Vehicle Crush (mm) ...... 410
. Concrete pavement, dry y-direction 697 Interior
Ridedown Accelerations (g's) OCD ..... se FS0000000
fees Production x-direction 5.76 ‘Max. Occ. Compart.
2000P y-direction 10.06 Deformation (mm) ... 16
1990 Chevrolet 2500 pickup Max. 0.050-s Average (g's)
. 1979 x-direction “715
inertial ...... 2000 y-direction 11.10
Dummy ......... Nodummy z-direction 6.35 3
Gross Static 2000 5
13

Figure 16. Summary of results for test 400001-RPC3.

7 dO z
@ WINSOION|


All segments > ing on a concrete surface and there was no deflection of the end
units. Based on we suggest that the length of need for unanchored units begin-a
minimum of approximately 18 m upstream from the point at which the barrier is introduced
and extend a similar distance beyond the end of the length of need when this system is used on
high-speed routes. Summary data for the first and third tests are shown in Enclosure 2. The
maximum roll, pitch, and yaw angles were 34 degrees, 15 degrees, and 13 degrees,
respectively.

Based on our review of the information you submitted, we agree that the Rockingham CMB
Connection as described above and used with an F-shape concrete barrier configured as tested
in the passing 3-11 test satisfies the evaluation criteria for a NCHRP Report 350 test level 3
(TL-3) barrier. Thus, it may be used for temporary barrier installations on the NHS when
such use is requested by a State highway agency. Since your design is patented, its use on
Federal-aid projects, except exempt, non-NHS projects, is subject to the conditions listed in
Title 23, Code of Federal Regulations, Section 635.411, a copy of which is enclosed as
Enclosure 3.-

Sincerely yours,

Kiva lé Le bbe

Dwight A. Horne, Chief
Federal-Aid and Design Division

|
|
|
|
|

3 Enclosures

Geometric and Safety Design Group Acceptance Letter B-42.


60mm

weOIS

END VIEW

SCALE = 1/2’ = I'-0

GENERAL NOTES:

D MININUM COMPRESSIVE STRENGTH OF
UNCRE TE AT THE AGE DF 28 DAYS (FO)

Seidl BE 4,000 PSI.

2) ALL REINFURLEMENT SHALL CONFORM
TU ASTM A615, GRADE 60.

(3) STANDARD BARRIER SECTIONS SHALL BE 3,658 mm
AS SHUWN. SHURTER SECTIONS SHALL BE CAST

IN wi BUIRED cENGTHS AS ONE UNIT.

LUNGER SECTIONS SHALL BE CAST Tl REQUIRED
DIMENSICINS IN TWE UNITS,

1 #5 x 18° |REBAR

DAS x 1-8" REBAR Pr

J #5 x 1-8" REBAR —~

SCALE = 172° = I'-0

ROCKINGHAM PRECAST

P.O. BOX 1547 * HARRISONBURG, VA 22801
PHONE 540-435-8282 * FAX 940-423-8120

Sreucrure| "F" SHAPED MEDIAN BARRIER

LOCATION

DRAWN [AJB | ORANG COVERS

DAE Q-AQ-97 | CONTRACTOR

e€dor

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