SECTION 601: GUARDRAIL DESCRIPTION
601.20 : General
This work shall consist of the construction of guardrail and guardrail end treatments in accordance with these specifications and in close conformity with the lines and grades shown on the plans or established by the Engineer. MATERIALS
601.40 : General
Materials shall meet the requirements specified in the following Subsections of Division III, Materials: Guardrail ......................................................................................................................................... M8.07.0 Guardrail End Treatment ......................................................................................................... M8.07.1 Guardrail Delineator ................................................................................................................... M9.30.7 Guardrail Termini Delineator ................................................................................................. M9.30.10 The contractor shall provide a detailed list of all system components for maintenance purposes. No work shall commence under these items until the Engineer has received all documentation. CONSTRUCTION METHODS
601.60 : Posts
Posts shall be set plumb, in hand or mechanically dug holes, or driven, then backfilled with acceptable material placed in layers and thoroughly compacted. If driven, the posts shall be provided with suitable driving caps and equipment used which will prevent battering or injury of posts. Posts damaged or distorted as a result of driving shall be removed and replaced with approved posts. Posts to be set in areas of proposed hot mix asphalt surfacing shall be erected prior to laying the surrounding finished surface. Posts set in areas of hot mix asphalt or cement concrete surfacing shall conform to the special post design shown on the plans. 601.62: Guardrail Panel The rail shall be erected in a smooth continuous rail conforming to the required line and grade. All rail elements and splices shall be per the plans. The rail shall make full contact at each splice. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges
I.34 202 4 Edition SECTION 6.00 : CONTROL OF MATERIALS Subsection 6.01 : Source of Supply and Quality The Engineer may approve material at the source of supply before delivery to the project. The Department reserves the right to require approval of the source of supply for any material to be incorporated into the work prior to delivery or manufacture. The Engineer reserves the right to prohibit the use of materials, products or components which , in the Engineer’s opinion , may be supplied in a manner not reasonably consistent with contract requirements. The determination of the Engineer shall be final upon all questions which pertain to supplier approval. Fabricators of structural steel, miscellaneous steel and aluminum products, and producers of precast concrete and prestressed concrete must be on the Department's approved fabricators list on the date the bids are opened. Only approved fabricators will be allowed to perform work for the Department. The Contractor shall furnish all materials required for the work specified in the Contract . Said materials shall meet the requirements of the specifications for the kind of work involving their use. For any materials named or described in these specifications, an approved equivalent to that named or described in the said specifications may be furn ished. Chapter 7, Section 22, Clause 17, of the General Laws, as amended, shall apply to the purchase by the Contractor of supplies and materials to be used in the execution of this Contract. The rules referred to require a preference in the purchase of supplies and materials, other considerations being equal, in favor first, of supplies and materials manufactured and sold within the Commonwealth, and second, of supplies and materials manufactu red and sold within the United States. All iron and steel products, manufactured products, and construction materials shall comply with all Federal Buy America and Federal Build America Buy America (BABA) requirements, where applicable. In Contracts requiring structural steel, precast, or prestress concrete, the Contractor shall furnish approved shop drawings, and fabrication procedures to the Department’s inspector at the supply source or fabrication site. Materials for permanent construction shall be new, shall conform to the requirements of these specifications, and shall be approved by the Engineer. Materials for temporary structures or supports adjacent to traveled ways, the failure of which would compromise the safety of the public or the traveled ways, need not be new but the Contractor shall be required to submit certification by a Structural Prof essional Engineer that the material meets the requirements for the intended use and shall be approved by the Engineer. Any fabrication shall conform to the requirements of these specifications. These requirements shall not apply to gantry systems and supports as well as other mechanized systems. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges
I.35 202 4 Edition If, after test(s), it is found that sources of supply which have been approved do not furnish a uniform product, or if the product from such source proves unacceptable at any time, the Contractor shall, at their own expense, take any and all steps necessary to furnish approved materials. If testing finds that an approved supplier does not furnish a uniform product, or if the product from such source proves unacceptable at any time, the Contractor shall, at their own expense, take any and all steps necessary to furnish approved materials. The Contractor shall submit to the Department for approval a notarized Certificate of Compliance (COC) from the Manufacturer or Supplier for each kind of manufactured or fabricated material furnished. The COC shall certify compliance with the specifications and shall contain the following information:
1.Contract Number, City or Town, Name of Road and Federal Aid Number;
2.Name of the Contractor to which the material is supplied;
3.Kind of material supplied;
4.Quantity of material represented by the certificate;
5.Means of definitively identifying the consignment, such as invoice number, lot number, bill of lading number, label, marking, etc.;
6.Date and method of shipment;
7.Statement indicating that the material has been tested and found in conformity with the pertinent parts of the Contract;
8.Statement indicating that the material meets the requirements of Buy America and BABA, where applicable;
9.Results of all required tests including the chemical analysis in the case of metal: or in lieu of furnishing the results a statement that results of all required tests pertinent to the certificate and not submitted shall be maintained available by the undersigned for a period of not less than three years from date of final acceptance or not less than three years from date of final payment (whichever period is the longest shall apply).
10.Signature of a person having legal authority to bind the supplier. These COCs shall be delivered to the contract site at the same time that the materials are delivered and before such materials are incorporated into the work. The Contractor shall attach to the COC a document listing the contract bid item number(s), sub item(s), or lump sum breakdown item number(s), as applicable, under which the material will be compensated. Payment for the item in which the materials are incorporated may be withheld until these COCs are received in a form that meets the contract requireme nts. If the Contractor has new materials purchased for use on a previous Department Contract which have never been used and which comply with the specifications, these materials may be furnished and used. The Contractor shall submit their own sworn statement certifying that such materials were purchased for use on a previous Contract (naming and identifying such Contract) and shall attach the original COC. Any cost involved in furnishing the certificate shall be borne by the Contractor. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges
I.36 202 4 Edition Subsection 6.02: Samples and Tests The inspection and sampling of materials will be carried out, ordinarily, at the source or at the site of the Contract work in accordance with established policies and procedures of the Department; but the Department will not assume any obligation for the inspection and sampling of materials at the source. The responsibility of incorporating satisfactory material in the work rests entirely with the Contractor, notwithstanding any prior inspection or test. Tests of materials will be made by the Department or under its direction in accordance with the Standards of the test as designated . The Contractor or their suppliers shall furnish such facilities as the Engineer may require for collecting and forwarding samples, and shall not make use of, nor incorporate in the work, any material represented by the samples until the required tests have been made and the material accepted. The Contractor in all cases shall furnish the required samples without charge. Materials such as crushed stone, gravel borrow, ordinary borrow, etc., will be sampled at the source and approved for use. However, such preliminary approval by the Engineer does not relieve the Contractor of the responsibility for placing satisfactory mat erial in the work as determined by subsequent samples taken at the source or on the project prior to the material being incorporated into the work and if the project samples test satisfactorily the material will be considered to meet the Contract requireme nts as to quality. If such sampling and testing reveal that the material is unsatisfactory it will then be the responsibility of the Contractor to remove it from the work or blend it with such other materials so that an acceptable material will be produced. The removal and blending of such material shall be done by the Contractor without additional compensation. Subsection 6.03: Delivery and Storage of Materials Materials and equipment shall be progressively delivered to or removed from the site so that there will be neither delay in the progress of the work nor an accumulation of materials that are not to be used or removed within a reasonable time. All materials shall be stored in pre -approved locations per the conditions of the property owner. Delivered materials and materials originating from the site shall be stored to assure the preservation of their quality and fitness for the work. Stored materials, even though approved before storage, may again be inspected prior to their use in the work. Stored materials shall be located to facilitate their prompt inspection. As a matter of public safety and to ensure the integrity of public facilities, the Contractor shall not store equipment and/or flammable, combustible or hazardous materials in any location that would pose a danger to any bridge, facility, structure or the environment. Approved portions of the State Highway Layout (SHLO) may be used for storage of project materials and for the placing of the Contractor's plant and equipment upon obtaining a state highway access permit. All storage sites shall be restored to their origina l condition by the Contractor. No additional compensation shall be given for the design, construction, preparation, or restoration of the storage site(s) or obtaining the access permit which may include but is not limited to a Traffic Management Plan (TMP) , utilities, and lighting. The application for a permit shall contain a locus map identifying the proposed location, a description of the specific activities and uses of the staging area, a TMP in accordance with Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges
I.37 202 4 Edition Subsection 7.10 depicting minimum setbacks from the roadway and any existing structures for stored materials and equipment and how equipment will safely access and exit the staging area. Any additional space required must be provided by the Contractor at their expense. Municipal, private, or other state -owned property shall not be used for storage purposes without written permission of the owner or lessee, and copies of such written permis sion shall be furnished to the Engineer. Subsection 6.04: Defective Materials Materials not conforming to these specifications shall be rejected and removed from the work by the Contractor as directed. No rejected material, the defects of which have been subsequently corrected, shall be used except with the permission of the Enginee r. Should the Contractor fail to remove non -conforming material within the time indicated in writing, the Engineer may withhold the estimated cost of the removal and replacement of the non- conforming material from any moneys due or to become due the Contractor. Upon further failure of the Contractor to remove and replace the nonconforming material, the Engineer shall have the authority to remove and replace the defective material, and the cost of such removal and replacement will be deducted from any moneys due or to become due the Contractor. Massachusetts Department of Transportation – Highway Division Standard Specifications for Highways and Bridges
I.38 202 4 Edition
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