701 - traffic maintainance

Louis Berger S.A.

701. TRAFFIC MAINTENANCE DURING CONSTRUCTION

Romania – Motorway Bucharest – Constanta, Subsections Drajna – Fetesti and Fetesti – CernavodaDetailed Engineering Study, Procurement Services and Supervision of Civil WorksTechnical Specifications Page 701 - 1

Louis Berger S.A.

TABLE OF CONTENTS

Section Description Page number701.1. General 701 - 2

701.1.1. Description 701 - 2701.1.2. Reference Documents 701 - 2

701.2. Materials 701 - 2701.3. Construction Method 701 - 4701.4. Quality Control for Acceptance 701 - 4

701.1. General

701.1.1. Description

This work shall consist of furnishing and erecting signs, lights, barricades and devices as shown on the approved Traffic Control and Maintenance Plan or as required by the Engineer or as proposed by the Contractor and approved by the Engineer.

701.1.2. Reference Documents

1. STAS 8924/3 - 74 Land surveying. Setting out public roads.2. STAS 1848 series Traffic safety

3.

Common order MI-MT no 1112/411, published in the Official Monitory no 397/24.08.200

“Methodological norms concerning de requirements for closing the traffic and introduce traffic restrictions to carry out works within the road right of way and/or to protect the road”

4. Law nr. 10/ 195 Low of quality in civil constructions

701.2. Materials

A. Construction Signing and Traffic Control Materials. Materials for construction signing and traffic control shall meet the requirements specified as follows:

1. Signs and Barricades. The supports and sign blanks may be metal, wood or plastic, the only requirement being satisfactory performance. All signs and barricades shall be reflectorized whether for day or night use. Reflectorization of signs and barricades shall be by means of wide-angle flattop reflective sheeting.

All sign messages and symbols shall be constructed in accordance with the “Methodological norms concerning de requirements for closing the traffic and introduce traffic restrictions to carry out works within the road right of way and/or to protect the road”.

2. Signs 3.60 MP and Over. Signs 3.60 square meters and over shall be constructed of extruded aluminium or galvanized steel. All signs in this item, which are to be ground mounted, shall be break-away-design and installed in accordance with the latest revision of the related standard drawings. Installation locations shall be approved by the Engineer prior to the construction. Due to the temporary nature of these signs, no reinforcing steel will be required in the sign footings. Installation of this item may also include placement of existing overhead sign structures and will be shown on the Traffic Control and Maintenance Plan.


Louis Berger S.A.

All signs in this item shall be reflectorized in accordance with current specifications. Sign colour and specific design shall be as shown on the Traffic Control and Maintenance Plan.

3. Barricade warning lights. Barricade warning lights shall meet the requirements of “Methodological norms concerning de requirements for closing the traffic and introduce traffic restrictions to carry out works within the road right of way and/or to protect the road”.

4. Advance Warning Devices. The advance warning devices shall consist of the following components:(1) A sign panel with amber coloured sealed beam lamps attached, meeting the requirements

of “Methodological norms concerning de requirements for closing the traffic and introduce traffic restrictions to carry out works within the road right of way and/or to protect the road”.

(2) A circuitry control unit.(3) A mounting frame.

The face of the panels, which are exposed to oncoming traffic, shall be a nonreflective black finish. The level of intensity of light displayed by the sealed beam units shall be changed through means of the control unit for either high intensity for day or reduced for night operations. All sealed beam units shall display essentially the same intensity of light for a given intensity setting. Larger panels may be substituted for smaller panels at the discretion of the Contractor, but smaller panels may not be substituted for larger panels.The sign panel shall be supported on a mounting frame such that when displayed to oncoming traffic, the bottom edge of the panel shall not be less then 2.0 m above the roadway surface. The frame shall support the sign panel with sufficient strength to resist an 125 km per hour sustained wind, with 130 km per hour intermittent gusts from any direction. The advance warning device shall be mounted in such a manner that the panel can be rotated on a horizontal axis so as to be hidden from the view of on-coming traffic when not in use. All mobile advance-warning devices shall mounted on pneumatic-tired vehicles. The flashing lights on the advance warning device shall be operated from a dependable power source, and shall have a separate auxiliary source of power immediately available. At least one power source on a mobile advance warning device shall be a self-contained source, either battery or electric generator operated.The advance warning device shall contain a special circuitry control unit. The circuitry control unit shall be a solid state electronic unit with four modes, which shall contain switching controls for operator selection as follows:(a) Pass Right-sequential chevrons or flashing arrow.(b) Pass Left-sequential chevrons or flashing arrow.(c) Pass Either Side-the outermost chevrons, one at either end of the panel with

the apex of each chevron pointing toward the nearest panel edge.(d) Caution-four or more lamps, arranged in a pattern, which will not indicate a direction.

B. Sampling and Testing. Tests will not ordinarily be made by the laboratory on the above materials, but the materials furnished shall be recognized standard products and the manufacturer of such products shall furnish the Engineer a certificate of compliance with these Specifications supported by the appropriate test reports.


Louis Berger S.A.

701.3. Construction Method

Signs, lights, and barricades may be placed on either portable or fixed supports as project requirements dictate. Traffic control devices shall meet the requirements of the current “Methodological norms concerning de requirements for closing the traffic and introduce traffic restrictions to carry out works within the road right of way and/or to protect the road”, as pertains to shape, size, colour, mounting height and placement.

When, in the opinion of the Engineer, any sign or other device, which has been damaged, needs cleaning, or has deteriorated to the extent it is no longer effective, it shall be cleaned or replaced immediately as required. The Contractor will designate at least one person to be on call 24 hours a day to respond to emergency traffic control needs.

701.4. Quality Control for Acceptance

The conformance of the temporary signing and marking with the approved Traffic Control and Maintenance Plan shall be evaluated daily by visual inspection. Where Contractor’s temporary signing and marking shall not comply, the related provisions of the contract and of the special provisions shall apply.
