AC-805579_HWY-37_53_395_SS.pdf

Revised: January 11, 2018

SUPPLEMENTAL SPECIFICATION

REVISIONS TO STANDARD SPECIFICATION 606 –

GUARDRAIL

SS-606/Page 1 of 9

606-1 DESCRIPTION

606-1.01 Scope

a. This work shall consist of furnishing and erecting corrugated steel beam guardrail systems and other types of metal barriers, all named collectively as guardrail, in accordance with these specifications, the standard drawings and in conformity with the lines, grades, types, details and locations shown on the plans or established by the Engineer.

b. The work shall also include, when called for in the contract documents:

1. The removal and resetting of existing guardrail as shown on the plans or as ordered by the Engineer.

2. The removal, storage, and delivery of existing guardrail to be salvaged as shown on the contract documents, plans or as ordered by the Engineer.

3. The refurbishing of existing guardrail according to plans or as directed by the engineer.

4. The furnishing and erecting of proprietary terminals at locations shown on the plans.

5. The furnishing and erecting guardrail transition sections to be installed on existing guardrail or on existing or new transition modules in accordance with these specifications, the standard drawings and in conformity with the lines, grades, types, details and locations shown on the plans or established by the Engineer.

c. The construction of the guardrail system shall include the assembly and erection of all necessary component parts and materials as required by the manufacturer and standard drawings at the locations shown on the plans or as directed by the Engineer.

d. This work shall include the submittal of an installation schedule for all guardrail works.

SS-606/Page 2 of 9

606-2 MATERIALS

606-2.01 Materials for guardrail, guardrail transition sections, guardrail posts, offset blockouts and any other necessary hardware to complete the proper guardrail system installation shall conform to the Specification 710, standard drawings, or as shown on the plans.

606-2.02 Manufactured materials, including guardrail systems, metal barriers and proprietary terminals will be accepted on the basis of the Authority’s inspection, and submission of manufacturer’s certificate of compliance with the specifications. This certificate shall be completed meeting the requirements of the Article 106.06 of the General

Provisions and the Buy America Clause Special Provision. The certificate shall clearly refer to the specific materials being delivered to the project site and shall be submitted to the

Engineer prior to starting the installation of the guardrail. The Authority reserves the right to inspect the manufacturing plant and/or to test samples of materials as it deems appropriate.

Failure of the Contractor to comply with the above requirements will be cause for the rejection of the guardrail.

606-2.03 All materials shall be new. The use of reconditioned used materials will not be permitted except as provided under paragraphs 606-1.01 b.1, and 606-1.01 b.3 of the Article

606-1.01 above.

606-3 CONSTRUCTION REQUIREMENTS

606-3.01 Posts

a. Posts shall be driven unless otherwise specified on the plans or by the Engineer.

The driving shall be accomplished with equipment and methods that will drive the posts plumb in their final position, free of any distortion, burring or damage.

b. When driving is not possible, the posts shall be set in dug holes which shall be backfilled with acceptable material as indicated in the standard drawings. Posts should be attached to concrete slab as indicated in the standard drawings.

c. When posts are driven on holes cut through concrete or treated material, the

Contractor shall backfill as indicated in the standard drawings.

d. All posts shall be aligned to a tolerance of 0.6 centimeters for plumb and grade line.

SS-606/Page 3 of 9

e. When required, and as approved by the Engineer, posts shall be cut with a saw to obtain a clean uniform finish. The cut surface shall be repaired within 15 centimeters of the cut and prior to post installation, with two coats of paint containing zinc dust meeting the requirements of the ASTM A780. Apply the paint as in accordance with the manufacturer’s printed instructions. This work shall be considered as a subsidiary obligation of the Contractor.

606-3.02 Rail Elements - Rail elements shall be erected in a manner resulting in a smooth, continuous installation. Washers shall be used at the rear of the posts. All bolts shall be drawn tight with adjustment bolts to be tightened after adjustments are completed.

Bolts shall be of sufficient length to extend beyond the nuts. Rail plates shall be spliced by lapping in the direction of traffic.

606-3.03 Repair of Galvanized Surfaces - Galvanized surfaces which have been abraded during handling and erection so that the base metal is exposed, threaded portion of all fittings and fasteners, and cut ends of bolts shall be repair conforming to ASTM A780.

Use paint containing zinc dust. Apply the paint as in accordance with the manufacturer’s printed instructions. This work shall be considered as a subsidiary obligation of the

Contractor.

606-3.04 Removing and Resetting Guardrail

a. The Contractor shall carefully remove and store existing guardrail sections, including posts, from the locations shown on the plans. The Contractor shall reset the reusable components at the locations shown on the plans or ordered by the Engineer.

b. The Engineer will determine which components are reusable. Existing concrete posts and wood blockouts shall not be reused. They shall be replaced by steel posts and blockouts in accordance with the standard drawings.

c. The Contractor shall replace unusable or missing components with new materials for a complete system installation as a subsidiary obligation of the

Contractor under this pay item.

SS-606/Page 4 of 9

d. Reusable components that have rusted portions shall be thoroughly sanded to remove the rust and these portions shall be repaired with two coats of paint containing zinc-dust meeting the requirements of the ASTM A780, at no extra cost.

e. Holes left when guardrail posts have been removed, shall be backfilled with suitable material and compacted in a manner approved by the Engineer.

f. Resetting of guardrail shall be accomplished in the same manner specified in

Article 3.01, 3.02 and 3.03 above for new guardrail installations.

g. Unusable material shall be disposed of by the Contractor away from the project site.

606-3.05 Removing, Storing and Delivering Guardrail

a. The Contractor shall carefully remove and store existing guardrail, including posts, from the locations shown on the plans or directed by the Engineer. The work shall be done in a neat and workmanlike manner so as to salvage all reusable parts.

b. Unusable material, such as concrete posts and wood blockouts, as determined by the Engineer, shall be disposed by the Contractor outside the project site or buried at locations within the project as approved by the Engineer.

c. Usable materials shall be delivered by the Contractor to the location indicated by the Engineer.

d. All holes left from removal of guardrail shall be backfilled as indicated in paragraph 606-3.04e above.

SS-606/Page 5 of 9

606-3.06 Refurbishing Existing Guardrails

a. Remove steel blockouts in existing guardrails and replace them with blockouts specified in the standard drawings. Spray the connecting bolts with penetrating oil for easier removal.

b. Drill new holes on the posts to meet the blockout and guardrail elevation shown on the standard drawings, if necessary. Provide new bolts, nuts and washers required to install the blockout and guardrail beam.

c. Remove the existing rectangular washer located between rail and post bolt head.

d. Provide guardrail reflector as per standard drawings and as directed by the

Engineer.

e. The Contractor shall replace missing components with new materials for a complete system installation in compliance with the standard drawings as a subsidiary obligation under the refurbishing existing guardrail pay items. This includes:

1. Bolts, nuts and washers

2. Blockouts

3. Guardrail reflectors

4. Terminals components (either double face or single face) including:

W-Beam End Section (rounded or buffer), Anchor Bracket, Cable Anchor

Assembly, Soil Plate, Bearing Plate and all necessary hardware for the construction of the Terminal.

f. Make sure all 8 bolts are in place in each splice connection. If there are missing bolts at a splice, install new bolts, nuts and washers. Tightened snug all bolt connections on the refurbished guardrail, either new or existing bolts.

g. No rail, post or bolt assembly shall be subjected to torch cutting. Any new holes shall be drilled.

h. Existing components to remain that have rusted portions shall be thoroughly sanded to remove the rust and these portions shall be painted with two coats of zinc-dust paint meeting the requirements of the ASTM A780 as a subsidiary obligation.

SS-606/Page 6 of 9

i. Unusable material shall be disposed of by the Contractor away from the project site at approved locations.

606-3.07 Proprietary Terminals

a. Proprietary terminals shall be installed following all manufacturers’ recommendations.

b. The Contractor shall submit a copy of manufacturer’s installation manual and shop drawings to the Engineer prior to the guardrail installation activities.

c. The Contractor shall conform to the required test level and transversable clear zone shown on plans and standard drawings.

d. A certificate of installation indicating full compliance with the manufacturer’s shop drawings and installation manual shall be furnished by the Contractor to the

Authority for each proprietary terminal installed in the project. The Certificate of

Installation shall be sealed and certified by a Professional Engineer authorized to perform engineering works in Puerto Rico.

e. Acceptance of each proprietary terminals installed on the project will be based upon inspection by the Authority.

606-3.08 Guardrail Transition Sections

a. Thrie-beam transition sections shall be installed following the standard drawings.

b. Acceptance of each thrie-beam transition section installed on the project will be based upon inspection by the Authority.

606-3.09 Installation Schedule

a. The Contractor shall submit an installation schedule with at least fifteen (15) days in advance the installation works begin. Acceptance or rejection of this schedule will be issued by the Engineer within ten (10) days after the submittal. If the schedule is rejected, the Contractor shall submit a revised installation schedule within the next three (3) days for approval.

SS-606/Page 7 of 9

b. The Contractor shall not begin any activity related to the installation of guardrail, without the approval of the installation schedule.

c. No time extensions will be issued because of modifications of the original installation schedule.

d. The installation schedule shall include:

1. Location in the project where each activity occurs.

2. Procedures to keep the guardrail system operational during the project construction.

3. Procedures for removal of guardrail in an orderly manner.

4. Procedures to avoid untreated end of barriers or roadside obstacles within the clear zone.

5. Any field condition that may affect the guardrail installation, and needs technical attention.

606-4 METHOD OF MEASUREMENT

606-4.01 The quantity of new guardrail measured for payment will be the number of linear meters, to the nearest tenth of a meter, of guardrail erected and accepted, measured from center to center of end posts. Single and double faced guardrails will be measured individually as they are separate pay items.

606-4.02 Terminals, end sections, connections, transitions and anchorages will be included in the quantity of guardrail measured as provided in Article 606-4.01 above and will not be measured separately. Proprietary terminals will be measured and paid for each one properly installed.

606-4.03 The removal and resetting of guardrail will be measured by the linear meter to the nearest tenth, of guardrail installed and accepted. The measurement will be made along the face of the beam of guardrail. For the removal and resetting of double face guardrail measure will be along each face of the beam through the length of guardrail (i.e. twice the length of the guard rail). This work shall include the replacement of unusable or missing components, the utilization of reusable components and any other requirement established on

Article 606-3.04 at no additional cost to the Authority.

SS-606/Page 8 of 9

606-4.04 The removal, storage and delivery of guardrail will be measured by the linear meter, to the nearest tenth of a meter, of guardrail removed and delivered or disposed of as per Article 606-3.05 above, measured from center to center of end posts or structure end connection. Anchorage, terminals and end sections will not be measured separately but will be considered as included in the quantity of guardrail removed and measured as indicated herein.

606-4.05 The refurbishing of existing guardrails will be measured by the linear meter to the nearest tenth of a meter, of guardrail refurbished as per Article 606.3.06 above and accepted, measured from center to center of end posts, except where end connections are made to structures in which case measurement will be to the face of such structures. This work shall include replacement of unusable or missing components, and any other requirement established on Article 606-3.06. Single and double faced guardrails will be measured individually as they are separate pay items.

606-4.06 Excavation and backfill will not be measured for payment but shall be a subsidiary obligation of the Contractor under the items of guardrail.

606-4.07 The transition connection of the w-beam guardrail to concrete parapet section will be measured by the unit, which price and payment shall constitute full compensation for furnishing and installing the guardrail transition section as defined in the standard drawings, and any other works or appurtenances necessary to complete the item.

606-5 BASIS OF PAYMENT

606-5.01 The accepted quantities of the various guardrail items included in the contract, measured as provided above, will be paid for at the corresponding unit price per unit of measurement. Such prices and payment shall constitute full compensation for furnishing and installing all materials, and for all equipment, tools, labor and incidentals necessary to complete each item as required by the plans, standard drawings and specifications.

SS-606/Page 9 of 9

606-5.02 Payment will be made under:

Pay Item Pay Unit

W-Beam Guardrail, Single Face ............................................................... Linear Meter

W-Beam Guardrail, Double Face .............................................................. Linear Meter

Removal and Resetting of Existing Guardrail ........................................... Linear Meter

Removal, Storage and Delivery of Existing Guardrail (any type) ............ Linear Meter

Refurbishing Existing Guardrail, Single Face ........................................... Linear Meter

Refurbishing Existing Guardrail, Double Face ......................................... Linear Meter

Proprietary Terminal Type _____,Test Level ____ .................................. Each

Thrie-Beam Transition Section Type _____ ............................................. Each

August 3, 2007

REVISIONS TO STANDARD SPECIFICATION 618 – THERMOPLASTIC AND

PREFORMED PLASTIC PAVEMENT MARKINGS

618-3 CONSTRUCTION REQUIREMENTS

618-3.01 General

Paragraph c. is revised to read as follows:

c. All markings shall be as shown on the plans, standard drawings or as ordered by the Engineer. Details not shown on the plans shall be in accordance with the current edition of the Manual on Uniform Traffic

Control Devices from the Federal Highway Administration (MUTCD-

FHWA). All markings shall present a clear cut, uniform and workmanlike appearance. Any markings which fail to have a uniform, satisfactorily appearance, either day or night, shall be corrected at the

Contractor’s expense.

618-3.02 Reflectorized Thermoplastic Markings

d. Application Rates:

Paragraph 3 is revised to read as follows:

3. Glass Beads - Glass beads shall be automatically applied immediately behind the striping mechanism at a rate of one (1) pound per one (1) square meter of thermoplastic surface area.

April 29, 2014

REVISIONS TO STANDARD SPECIFICATION 638 – MAINTENANCE AND

PROTECTION OF TRAFFIC

638-1 DESCRIPTION

638-1.01 Scope

The following paragraph is revised to read as follows:

d. All traffic control devices and traffic control operations shall be in accordance with the current edition of the Manual on Uniform Traffic Control Devices from the Federal Highway Administration (MUTCD-FHWA) and the Standard

Drawings.

638-2 MATERIALS

638-2.01 General

The following paragraph is revised:

a. All traffic control devices shall conform to the design, dimensions, materials, colors, fabrication and installation requirements specified on the plans, the

“Manual de Señales de Tránsito (MST) of the DTPW, the standard drawings of the Authority, the standard specifications as may be modified by the specification and the current edition of the Manual on Uniform Traffic Control

Devices from the Federal Highway Administration (MUTCD-FHWA).

Add the following paragraph:

e. All traffic control devices shall have been successfully crash tested to meet the requirements of NCHRP 350 and/or been approved by the Federal Highway

Administration. The Contractor shall submit the Engineer a certificate of compliance for this in a form meeting the requirement of section 106.06 of the

General Provisions.

The following articles are revised to read as follows:

638-2.02 Construction Signs

a. Sign panels may be made of aluminum, galvanized steel or marine plywood.

Sign posts shall be metallic as shown on standard drawings but wood supports may be used when so designed to yield when impacted by a moving vehicle.

Wood posts shall be according to temporary traffic sign mounting details included in the contract documents.

b. Reflective sheeting shall be fluorescent orange prismatic retro-reflective consisting of prismatic lenses formed in a transparent fluorescent orange synthetic resin, sealed, and backed with an aggressive pressure sensitive adhesive protected by a removable liner. The sheeting shall have a smooth surface.

(1) Physical Properties –

(a) Photometric - Coefficient of Retroreflection RA - When the sheeting applied on test panels is measured in accordance with

ASTM E 810, it shall have minimum coefficient of retroreflection values as shown in Table I. The rotation angle shall be as designated by the manufacturer for test purposes, the observation angles shall be 0.2 degrees and 0.5 degrees, the entrance angles

(component B1) shall be -4 degrees and +30 degrees.

TABLE I

Minimum Coefficient of Retroreflection RA

Candelas per footcandle per square foot

Observation

Angle (deg.)

Entrance

Angle (deg.)

RA

Orange

0.2 - 4 200

0.2 + 30 90

0.5 - 4 80

0.5 + 30 50

The rotation shall be as designated by the manufacturer.

(b) Daytime Color – Color shall conform to the requirements of

Table II. Daytime color and maximum spectral radiance factor

(peak reflectance) of sheeting mounted on test panels shall be determined instrumentally in accordance with ASTM E 991. The values shall be determined on a Hunter Lab Labscan 6000 0/45

Spectrocolorimeter with option CMR 559 (or approved equal

0/45 instrument with circumferential viewing illumination).

Computations shall be done in accordance with ASTM E 308 for the 2 degree observer.

TABLE II

Color Specification Limits** (Daytime)

Color 1 2 3 4

Reflectance

Limit Y (%)

X Y X Y X Y X Y MIN MAX

Orange

(new)

.58

.416 .523 .397 .560 .360 .631 .369 28 -

Orange

(weathered)

.58

.416 .523 .397 .560 .360 .631 .369 20 45

Maximum Spectral Radiance Factor, new: 110%, min.

weathered: 60%, min.

** The four pairs of chromaticity coordinates determine the acceptable color in terms of the CIE 1931 standard colorimetric system measured with standard illuminant D65.

(c) Nightime Color - Nightime color of the sheeting applied to test panels shall be determined instrumentally in accordance with

ASTM E 811 and calculated in the u', v' coordinate system in accordance with ASTM E 308. Sheeting shall be measured at

0.33 degrees observation and -4 degree entrance at rotation as determined by the manufacturer for test purposes. Color shall conform to the requirements of Table III.

TABLE III

Color Specification Limits ** (Nighttime)

Color 1 2 3 4 u' v' u' v' u' v' u' v'

Orange

(new an d weathered)

.400 .540 .475 .529 .448 .522 .372 .534

(d) Field Performance – Retroreflective sheeting processed and applied to sign blank materials in accordance with the sheeting manufacturer's recommendations, shall perform effectively for a minimum of 3 years. The retroreflective sheeting will be considered unsatisfactory if it has deteriorated due to natural causes to the extent that: (1) the sign is ineffective for its intended purpose when viewed from a moving vehicle under normal day and night driving conditions; or (2) the coefficient of retroreflection is less than 100 when measured at 0.2 degrees observation and -4 degree entrance. All measurements shall be made after sign cleaning according to the sheeting manufacturer's recommendations.

638-2.03 Barricades, Drums and Cones (limited use)

Barricades shall be constructed of wood or plastic. Drums shall be plastic with conic, round or square section, approximately 36 inches high and a minimum of 18 inches in diameter. Cones shall be used on low-volume, low-speed (40MPH or less) roadways only. Never shall be used on expressway, freeway or toll roads. They shall be a minimum of 28 inches in height with a broadened base, orange colored and shall be made of a material that can be struck without causing damage to the impacting vehicle. Barricades, drums and cones shall be marked and reflectorized in accordance with the requirements of the current edition of the Manual on

Uniform Traffic Control Devices from the Federal Highway Administration (MUTCD-FHWA).

638-2.04 Temporary Pavement Markings

e. When temporary pavement markings will remain for more than fourteen (14) calendar days, thermoplastic pavement markings in conformance to the requirements of article 716-4 or preformed plastic pavement markings in conformance to the requirements of article 716-5 shall be used.

638-2.11 Warning Lights

Warning lights shall be of the steady burning type meeting the requirements of the current edition of the Manual on Uniform Traffic Control Devices from the Federal Highway

Administration (MUTCD-FHWA).

Add the following articles:

638-2.13 Portable Changeable Message Signs (PCMS) –

a. PCMS’s shall meet all physical display and operational requirements as described in the current edition of the Manual on Uniform Traffic Control

Devices from the Federal Highway Administration (MUTCD-FHWA).

b. Display panel and housing shall comply with the following requirements:

(1) Shall be weather-tight.

(2) All nuts, bolts, washer and other fasteners shall be made of a corrosive resistant material.

(3) The message matrix panel background and frame for PCMS assembly shall be painted flat black according to Federal Specification TT-E-489.

(4) Servicing of all massage matrix panel components shall be accomplished from the front of the message matrix panel.

(5) Each message matrix panel shall provide a glare screen for each message line to aid against sun glare.

(6) The display panel, when raised in the upright position, will have a minimum height of 2.1 meters from the bottom of the panel to the ground.

(7) The unit shall have an accessible mechanism to easily raise and lower the display assembly. A locking device shall also be provided to ensure the display panel will remain in the raised or lowered position.

c. The message matrix shall comply with the following requirements:

(1) The PCMS message matrix shall be 2.1 meters height by 3.0 meters wide.

(2) The message matrix panel shall contain three separate lines. Each line shall consist of at least eight characters, equally spaced a minimum of

7.62 cm. Each character shall contain 35 pixels in a five by seven horizontal to vertical grid arrangement.

(3) Each message line of the PCMS shall provide for characters 33 cm wide by 45.7 cm high and variable graphic and symbol sizes to a minimum of 45.7 cm in height.

d. The electrical system of the PCMS shall be solar powered and comply with the following requirements:

(1) The photovoltaic unit shall provide twenty one (21) days of continuous operation without sun light with a minimum of on site maintenance.

(2) Automatic recharging of power supply batteries shall be provided.

(3) The battery shall be equipped with a battery controller to prevent over charging and over discharging. An external battery level indicator shall be provided.

(4) The battery, controller, and power panel shall be protected from weather elements and vandalism.

e. The controller shall comply with the following requirements:

(1) The controller and control panel shall be housed in a weather, dust and vandal proof cabinet.

(2) The keyboard shall be equipped with a security lockout feature to prevent unauthorized use of the controller.

(3) The controller shall be solid state in design and function.

(4) The control panel shall display a representative message that will be displayed on the sign panel.

(5) The flash rate shall be adjustable in the sign controller from one to ten.

f. Operation and Performance –

(1) The message shall be displayed in upper case except when lower case is project specific and is allowed by the current edition of the MUTCD.

(2) The message matrix shall be visible from 800 meters and legible from a distance of 200 meters under both day and night conditions. Under variable level conditions the sign shall automatically adjust it’s light source so as to meet the 200 meters visibility requirement. The message panel shall have adjustable display rates, so that the entire message can be read at least twice at the posted highway speed.

(3) The control panel shall have the capability to store a minimum of fifty

(50) preprogrammed messages.

(4) The controller in the control panel shall have a memory capable of maintaining the stored messages even during non-powered conditions.

(5) The controller shall allow the operator to generate additional messages on site via the keyboard.

(6) All messages shall be flashed or sequenced. In the sequence mode, the controller shall have the capability to sequence three lines during one cycle.

638-2.14 Truck-Mounted Attenuators (TMAs) and Shadow Vehicles

a. Truck-Mounted Attenuator systems (TMA) consist of an energy absorbing component and a rear panel with a retro-reflective chevron panel and vehicle lighting system attached to a truck (shadow vehicle) using a back support assembly with an appropriate connecting mechanism. Truck-mounted attenuators shall be equipped with a system for tilting from the horizontal configuration where it has energy absorbing capacity to a vertical position on the truck when not in use. The unit shall have a mechanical locking device to secure the truck mounted attenuator energy absorbing component in the vertical upright travel position.

b. A Trailer Mounted TMA consists of an energy absorbing mechanism attached to a specially designed trailer connected to a truck (shadow vehicle), a rear panel with a retro-reflective chevron panel and vehicle lighting system. The Trailer

Mounted TMA shall be considered a TMA system for the purposes of this specification unless indicated otherwise. The Trailer Mounted TMA shall be designed for use as a trailer with different types of trucks normally used as shadow vehicles in maintenance and construction activities. The Trailer Mounted

TMA shall provide for easy attachment and detachment from the truck, including a trailer hitch or collar specifically designed and tested for this use. The Trailer

Mounted TMA shall be complying with the requirements for a TMA system as per this specification, except the requirements in article 638-2.13 (a).

c. The Authority reserves the right to reject a certain TMA for use in certain applications based on the crash test results, past and present equipment in-service performance and any other technical limitations noted in FHWA's letter of acceptance.

d. The Contractor shall provide TMA systems manufactured in compliance with all requirements of this specification, the manufacturer’s recommendations and the most current version of the MUTCD as adopted by the Authority.

e. The TMA rear panel shall have a standard trailer lighting system in compliance with applicable motor vehicle laws, including but not limited to brake lights, tail lights and turn signals. Lights shall be visible in both the raised and lowered positions.

f. The Truck-Mounted Attenuator shall be no less than 84 inches wide and no more than 108 inches wide. Color of the truck-mounted attenuators shall be yellow.

g. All mechanical and electrical components of the TMA shall be completely compatible with the shadow vehicle following the manufacturer’s recommendations. The Contractor shall be responsible to comply with all safety measures as recommended by the manufacturer. The uses of third party or homemade adapters, connectors or converters are not acceptable for the purposes of this specification.

h. Truck-mounted attenuator systems shall conform to the requirements of the

National Cooperative Highway Research Program (NCHRP) Report 350. Prior to their use, the Contractor shall submit the Engineer a certificate of compliance in a form meeting the requirements of section 106.06 of the

General Provisions. The certificate of compliance shall be accompanied by the following:

1) TMA product catalog, manuals and specifications.

2) A copy of the Federal Highway Administration acceptance letter.

3) Non-reflective and retro-reflective sheeting specifications.

4) A copy of the weight ticket for the shadow vehicle as indicated in the article 638-2.13 (g.).

i. Each TMA shall be like new. Furnish each unit with all equipment, options, and features as required by these specifications. If the TMA system is not furnished new, the Contractor shall document and demonstrate to the

Engineer’s satisfaction that the system conforms to the requirements of a new system or NCHRP 350 at the Test Level for which it was originally designed and may be used until the end of the attenuation device's useful service life.

TMA systems without retro-reflective stripes or otherwise damaged shall not be acceptable to the Authority.

j. Truck-mounted attenuators shall comply with crash tests according to NCHRP

350 Test Level 3 or Test Level 2, as required in each case. The Authority shall require that each truck mounted attenuator complies with the following Test

Level based on the posted speed limits of the road under normal conditions, before implementing the work zone. The TMA Test Level shall comply with the following speed limits:

Posted Speed Limit of the road

(Under normal conditions)

TMA Test Level required

45 MPH or less Test Level 2

50 MPH or more Test Level 3

k. The TMA unit shall have a chevron pattern that covers the rear face of the unit.

The standard chevron pattern shall consist of stripes, alternating non-reflective black and yellow retro-reflective prismatic sheeting, slanted at 45 degrees in an inverted "V" pattern, centered on the rear of the unit. The width of the stripes shall be between 4 - 8 inches (100 - 200 millimeters). The chevron pattern shall cover a minimum of 75 percent of the rear panel area excluding the required vehicle or trailer lighting, and shall be visible to traffic at all times.

l. Each of the stripes in the chevron pattern shall consist of factory installed flexible sheeting, capable of absorbing minor impacts without cracking.

Yellow retro-reflective prismatic sheeting material shall comply with the requirements of ASTM D4956 Type VIII or Type XI. The retro-reflective prismatic sheeting shall be installed by the manufacturer and shall comply with the performance requirements of this specification. The design and placement of the stripes shall follow this specification and the most current MUTCD requirements.

m. The weight of the shadow vehicle shall be as recommended by the manufacturer of the TMA. The Contractor shall provide a copy of the manufacturer’s recommendation to the Engineer and a copy of a weight ticket for the vehicle. The weight ticket shall contain adequate information to associate the ticket with the applicable vehicle. Additional weight may be added to the shadow vehicle to achieve the range recommended by the manufacturer of the TMA provided the total weight is within the Gross Vehicle

Weight Recommendation of the shadow vehicle and is anchored to the vehicle or installed in its bed in such a way that no movement will occur during impacts.

n. An electronic Flashing Arrow Sign complying with Supplemental Specification

638 shall be attached to the shadow vehicle or truck-mounted attenuator system as recommended by the manufacturer. The Flashing Arrow Sign installed with the TMA shall constitute a subsidiary obligation of the Contractor under the respective pay item. The use of the Flashing Arrow Sign shall be subject to the

Plans, Standard Drawings and the most current version of the MUTCD as adopted by the Authority.

o. The shadow vehicle shall have at least one rotating amber light or high-intensity amber strobe light functioning while in operation. When indicated by the Plans or by the Engineer an electronic Flashing Arrow Sign operated in the caution mode may be used in lieu of the rotating or high-intensity amber strobe light.

p. The transmission of the shadow vehicle with the truck-mounted attenuator in use shall be in second gear, except for those with an automatic transmission, which shall be in park. The parking brake shall be applied and the front wheels aligned straight ahead when operating in the stationary mode.

638-3 CONSTRUCTION REQUIREMENTS

638-3.02 Construction Signs

Paragraph b. is revised to read as follows:

b. The number of signs indicated in the current edition of the Manual on Uniform

Traffic Control Devices from the Federal Highway Administration (MUTCD-

FHWA), standard drawings, and the plans are a minimum and the Engineer may require additional signs. The Contractor shall have adequate quantities of these signs on hand prior to starting construction operations for use as required.

638-3.03 Barricades, Drums and Cones

Paragraph a. is revised to read as follows:

a. The Contractor shall furnish, erect, maintain, move, replace and remove construction barricades, drums and cones where and as indicated on the plans, the current edition of the Manual on Uniform Traffic Control Devices from the

Federal Highway Administration (MUTCD-FHWA) or as directed by the

Engineer.

638-3.04 Temporary Pavement Markings

c. When as required by article 2.04 e. , thermoplastic or preformed plastic pavement markings are used, they shall be applied in accordance with

Specification 618.

638-3.11 Flag persons

Paragraph c. is revised to read as follows:

a. For daytime work the flagger’s vest, shirt, or jacket shall be orange, yellow, yellow-green, or a fluorescent version of these colors. For nighttime work, similar outside garments shall be retro reflective. The flagmen operate in conformance with the procedures and requirements of the current edition of the

Manual on Uniform Traffic Control Devices from the Federal Highway

Administration (MUTCD-FHWA).

Add the following articles:

638-3.12 Portable Changeable Message Signs (PCMS) –

a. When the pay item for PCMS’s is included in the proposal schedule, the

Contractor shall furnish, install, operate and maintain two PCMS’s which shall be always available at the project.

b. The Engineer will notify the Contractor the exact locations for the installation of the PCMS’s and the messages to be displayed on the sign.

c. The PCMS’s shall be installed and be operating with the indicated messages within two hours after a written or oral request is issued by the Engineer. Failure to comply with this requirement may be cause for the assessment of liquidated damages in the amount of five hundred dollars ($500.00) per each hour or fraction of hour of non-compliance. Liquidated damages in the same amount will be assessed for each hour or fraction of hour the PCMS’s are not operating properly.

638-3.13 Truck-Mounted Attenuators (TMAs) and Shadow Vehicles -

a. Shadow vehicles shall not be used for other purposes while the truck-mounted attenuator is being used. There shall be no additional devices in the bed of the shadow vehicle except the additional weight as allowed and the truck-mounted electronic Flashing Arrow Sign.

b. The truck upon which the attenuator is to be mounted shall be fully operational. The TMA shall be installed according to manufacturer’s specifications.

c. TMA systems shall not be parked against rigid objects such as bridge piers and portable concrete barrier except as a temporary safety measure until a stationary crash cushion is installed. This use of TMAs shall be 72 hours maximum, or as shown in the Plans.

d. Use of the TMA system as a stationary barrier vehicle or shadow protection vehicle for mobile or stop and go operations shall comply with the MPT Plans, the manufacturer’s recommendations and the Engineer’s instructions in regards to the following:

1) In a stationary barrier vehicle operation, the TMA shall be positioned so that traffic does not pass any other object within the protected area (i.e.

equipment, personnel, and vehicles) before reaching the TMA. When the

TMA is a shadow vehicle in a mobile operation, approaching traffic shall not reach or overtake any object before passing the TMA.

2) The TMA shall be positioned at a prudent distance before the area to be protected or the rear of the next vehicle in the mobile array depending on the type and speed of the operation, road conditions, traffic volumes and other site conditions.

3) Each TMA in use shall have an assigned driver, who must remain in the service vehicle at all times that the TMA system is in use in a mobile operation or available to reposition the TMA within a 15-minute time frame in the case of a stationary vehicle barrier operation.

e. In the event the truck-mounted attenuator is impacted, resulting in damage that would cause the unit to be ineffective, all work requiring the use of the truck-mounted attenuator shall cease until such time that the Contractor can provide an acceptable unit as defined in the Special Provision by means of repair or replacement. The Contractor shall complete replacement or repair operations of the defective or damaged equipment within seventy-two hours after discovery or notification of a failure.

f. The Contractor performing the work shall provide, install, remove, relocate as necessary, and maintain the TMA system throughout the duration of the project. When not in use, the Contractor is responsible to keep the TMA system away from conflict with the roadway conditions to prevent confusion of the traveling public.

638-4 METHOD OF MEASUREMENT

638-4.01

n. The unit of measurement for each PCMS will be by the month measured from the date the sign is available at the project site and ready for operations, as determined by the Engineer, to the date that it is indicated by the Engineer for not being necessary in the project. Periods of less than one month will be computed at the rate of 1/30 of the unit price per month for each day of use in the project.

o. Truck-mounted attenuators (TMAs) of the type (test level, (TL)) specified in the proposal schedule will be measured by the number of hours (or fraction of an hour) of actual operation for each unit required and accepted by the Engineer and furnished by the Contractor. This shall include the shadow vehicle, the attenuator, amber or strobe lights, electric arrow panels, vehicle maintenance, driver and any other requirements established in this specification and/or indicated by the Engineer.

p. Shadow vehicles, when required by the Maintenance of Traffic drawings or as requested by the Engineer will be measured by the number of hours (or fraction of an hour) of actual operation for each unit required and accepted by the

Engineer and furnished by the Contractor. This shall include the vehicle, amber or strobe lights, vehicle maintenance, driver and any other requirements established in this specification and/or indicated by the Engineer.

638-5 BASIS OF PAYMENT

638-5.01 Payment

The following paragraphs are revised as follows:

c. Any traffic control device or equipment included under this specification, that is damaged by traffic, vandalism or other cause not attributable to negligence on the part of the Contractor will be repaired by force account, by an agreed unit price, or will be replaced at the contract unit price when so approved by the Engineer. However, no payment will be made for required repair or replacement of traffic control devices damaged by the Contractor’s personnel or equipment, or as a result of negligence on his part, of for normal maintenance.

h. In the event that that the Contractor fails to maintain traffic in a satisfactory manner in accordance with the requirements of Articles 104.7, 107.08, and

107.11 of the General Provisions and of this specification, he will be assessed liquidated damages at the rates specified in Article 108.09 of the General

Provisions for each day of such failure. The Engineer will notify the

Contractor in writing of the effective date of the application of this penalty.

This is in addition to non-payment for items that the Contractor failed to provide and maintain under the requirement of this specification.

These fines or penalties are not reimbursable and are in addition to non-payment for items that the Contractor failed to provide and maintain under the requirements of this specification.

i. If the Contractor fails to maintain and protect traffic adequately and safely for a period of 24 hours or more, the Engineer will correct the adverse conditions by any means he deems appropriate and will deduct the cost of such corrective work from any monies due the Contractor. The cost of this work shall be in addition to the liquidated damages and nonpayment for items specified above.

j. When a PCMS is malfunctioning or not operating for a period of time within

2 to 24 consecutive hours, a deduction in the amount of 1/30 of the contract unit price per month will be made to the payment to the contractor for said period of time remains in the project malfunctioning or not operational.

638-5.02 Pay Items – Payment will be made under:

Add the following pay items:

Portable Changeable Message Sign (PCMS) (Each

Sign)

……… Month

Truck Mounted Attenuator (TMA), TL- 2 or 3 ……… Hour

Shadow Vehicle ……… Hour

Add the following article:

638-5.03 Thermoplastic pavement markings found deficient in thickness but which are accepted by the Authority according to article 618-3.02 d. (2) will be paid for at a reduced unit price as established on article 618-5.02.

January 27, 2012

SPECIFICATION 661 - PROJECT IDENTIFICATION SIGN

SS-661-1

661-1.1 DESCRIPTION

661-1.01 Scope – This work shall consist in furnishing, erecting, maintaining and removing project identification signs in accordance with these specifications and in conformity with the design, dimensions, materials and locations shown on the plans or established by the Engineer.

661-2 Materials

661-2.01 Each sign and supporting frame shall be constructed of good quality new lumber as follows:

a. Frame – Shall be dry No. 1 grade lumber, sound, squaredge, surfaced four sides, free of loose knots or decay. It may be douglas fir, spruce, oak, or cypress conforming to AASHTO M 168. Lumber shall be pressure treated with pentachlorophenol or chromated copper arsenate in conformity with the standards of the American Wood Preservers Association (AWPA).

b. Sign Panel – Shall be: ½ inch thickness exterior type, high density plywood, resin-bonded, B-B grade or better as per the National Bureau of

Standards Specification PS-1 for construction plywood. It shall be covered with vinyl or laminated aluminum at both sides.

c. Printing – Full Color UV Care Inkjet Digital Process, with a minimum resolution of 720 DPI, printed direct into panels. It shall be non-retroreflective. Printing shall be warranted for a minimum of three years.

d. Hardware - Bolts, nuts, washers and other hardware for erecting the sign assembly shall be aluminum or galvanized steel.

661-3 CONSTRUCTION REQUIREMENTS

661-3.01 The Contractor shall furnish and erect the number of signs indicated in the contract documents. If not so indicated, then only one sign will be erected.

661-3.02 Signs shall be erected at the locations shown on the plans or indicated by the

Engineer. They shall be so placed as to not obstruct the visibility of traffic signs and the visibility and security of highway users (drivers, pedestrians, cyclists, etc).

SS-661-2

661-3.03 The Contractor shall maintain the signs in good condition throughout the full construction period, replacing the printing and repairing them as necessary.

661-3.04 After the construction work is completed and accepted the Contractor shall remove the signs from the project site unless otherwise directed by the Engineer.

If removal is requested, the Contractor shall dispose properly the complete sign and backfill any hole caused during the removal procedure.

661-4 METHOD OF MEASUREMENT

661-4.01 Project identification signs shall be measured by the number of individual units furnished, erected and installed.

661-4.02 The maintenance, replacement of the printing and repairing of the signs during the full construction period and the removal of it after the construction work is completed will not be measured for payment but will be subsidiary obligation under this specification.

661-4.03 The removal of the sign at the end of the project and the backfilling of holes shall be considered as a subsidiary obligation of the Contractor.

661-5 BASIS OF PAYMENT

661-5.01 The quantity of project identification signs determined as provided above, shall be paid for at the contract unit price per unit for the day item listed below that is included in the contract. Such price and payment shall be full compensation for furnishing all materials, labor, equipment, tools and incidentals necessary to satisfactorily complete the item as required by the specifications.

661-5.02 Payment will be made under:

Project Identification Sign (Size) Each

SS-661-3

SS-661-4

SS-661-5

July 30, 2009

REVISIONS TO SPECIFICATION 702 – BITUMINOUS MATERIALS

The following article is revised to read as follows:

702-1 Asphalt Binder - The asphalt binder shall conform to the following:

a) Be classified as PG 64-22, PG 67-22 or PG 70-22 in accordance with AASHTO M 320.

b) The performance grading classification shall be certified by an AASHTO Accredited Laboratory (AAP R18).

c) The Contractor shall notify the Authority in advance when sampling for performance grading will be performed.

REVISIONS TO SPECIFICATION 703 - AGGREGATES

SS-703 1 of 3

The following article is revised to read as follows:

703-3 AGGREGATES FOR HOT PLANT-MIX BITUMINOUS PAVEMENT:

703-3.01 Aggregates, including mineral filler, shall meet the following requirements:

a. Grading of the coarse aggregates and fine aggregates shall be such that when it is blended in the proper proportion, the resultant aggregate mixture, at both the mix design process and during the production process, will be between the control points in Table 703-3 for the type and category of HMA specified in contract documents.

b. Coarse aggregate fraction of the aggregate mixture (fraction not passing the Primary

Control Sieve as defined in Table 401-2 for the applicable type of HMA) shall be crushed stone or crushed gravel meeting the following requirements:

(1) It shall have an Angularity, measured using the percent fractured faces procedure as stated in ASTM D 5821, that meets the following requirements for the type of mix specified in contract:

Minimum Percentage of

Fractured Faces Mix Type

S L B One Face 75 50 50

(2) The maximum percentage of wear when tested as per AASHTO T 96 shall not exceed 40 percent.

(3) Maximum number of flat and elongated particles1 shall not exceed 15 percent as per ASTM D 4791.

1A flat and elongated particle is one where the ratio of the longest dimension to the shortest dimension exceeds 5.

(4) It shall be of such gradation that when blended in the proper proportion with the other constituents, the resultant aggregate mixture will meet the gradation requirements of Table 703-3 for the type of HMA specified in the contract documents.

(5) It shall be free from soft and disintegrated pieces, clay, organic or other deleterious matter.

c. Coarse aggregate in surface mixes (fraction not passing the Primary Control Sieve defined in table 401-2 for the applicable type of HMA specified in contract documents) shall have a minimum polishing value of 48 as determined by ASTM D 3319.

SS-703 2 of 3

d. Fine aggregate fraction of the aggregate mixture (fraction passing the Primary Control

Sieve defined as defined in Table 401-2 for the applicable type of HMA ix specified in the contract documents) shall consist of natural sand, stone screenings, or a combination thereof and shall conform to the following requirements:

(1) It shall conform to the quality requirements of AASHTO M 29, except that the soundness test is not required.

(2) It shall be free from soft and disintegrated pieces, clay, and organic or other deleterious matter as determined by AASHTO T 267.

(3) It shall be of such gradation that when blended in the proper proportion with the other constituents, the resultant aggregate mixture will meet the gradation requirements of Table 703-3 for the type of HMA specified in the contract documents.

(4) Report Fine Aggregate Angularity, tested as per AASHTO T 304, Method A.

(5) Report Sand Equivalent (percent), as determined by AASHTO T 176.

e. Mineral filler for bituminous paving mixtures, if required, shall conform to the requirements of AASHTO M 17.

TABLE 703-3

AGGREGATE GRADINGS FOR HOT…