32 30 00.pdf

Mahoning Dam, Guardrail Replacement

SECTION TABLE OF CONTENTS

DIVISION 32 - EXTERIOR IMPROVEMENTS

SECTION 32 30 00

INCIDENTAL CONSTRUCTION

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 WORK PLAN

PART 2 PRODUCTS

2.1 GUIDE RAIL

2.1.1 General

2.1.2 New Guide Rail Elements

2.1.3 New Guide Rail Posts

2.1.4 New Guide Rail Terminal Sections

2.1.5 Hardware

2.1.6 Repair of Zinc-Coated Surfaces

PART 3 EXECUTION

3.1 REMOVAL OF EXISTING GUIDE RAIL

3.1.1 Safety and Health Provisions

3.1.2 Items for Disposal, Reinstallations, and Salvage

3.1.3 Removal of Guide Rail

3.2 INSTALLATION OF GUIDE RAIL

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SECTION 32 30 00 Page 1 W911WN-09-B-0014 Revised by Amendment 0004 set

SECTION 32 30 00

INCIDENTAL CONSTRUCTION

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO M 180 (2000; R 2004) Corrugated Sheet Steel Beams for Highway Guardrail

ASTM INTERNATIONAL (ASTM)

ASTM A 123/A 123M (2008) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A 325 (2007a) Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

ASTM A 780 (2001; R 2006) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

PENNSYLVANIA DEPARTMENT OF TRANSPORTATION (PDT)

PDT 408 (2007) Specifications

PDT 72M (2004) Roadway Construction Standards

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2008) Safety and Health Requirements Manual

WEST VIRGINIA DEPARTMENT OF HIGHWAYS (WVDOH)

WVDOH Spec (2000) Standard Specifications for Roads and Bridges, Including Supplemental Specifications dated January 1, 2009

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in

SECTION 32 30 00 Page 2 accordance with Section 01 33 00 SUBMITTAL PROCEDURES and as required by the Task Order:

SD-01 Preconstruction Submittals

Work Plan; G, ED

The Contractor shall submit a work plan detailing procedures, equipment, and worker qualifications for each item of work under this section.

SD-02 Shop Drawings

New Guide Rail Elements; G, ED New Guide Rail Posts; G, ED New Guide Rail Terminal Sections; G, ED Hardware; G, ED

The Contractor shall submit detail drawings of guide rail elements, posts, and terminal sections.

SD-03 Product Data

New Guide Rail Elements; G, ED New Guide Rail Posts; G, ED New Guide Rail Terminal Sections; G, ED Hardware; G, ED

SD-07 Certificates

New Guide Rail Elements; G, ED New Guide Rail Posts; G, ED New Guide Rail Terminal Sections; G, ED Hardware; G, ED

Contractor shall submit certifications attesting that the guide rail, posts, terminal sections, and all associated hardware meet the specification requirements.

1.3 WORK PLAN

The Contractor shall prepare a work plan for each feature of work under this section of the specifications. The work plan shall describe equipment and methods proposed for performing the work, coordination with other work, and temporary protection measures required.

PART 2 PRODUCTS

2.1 GUIDE RAIL

2.1.1 General

Except as otherwise specified within these specifications, materials for new guide rail elements, posts and offset brackets, and new hardware shall conform to the applicable requirements of PDT 408, Section 1109. All steel components shall be galvanized. The existing post spacing is approximately 10 feet, on center. The new rail shall be field drilled as required for mounting.The existing posts shall be removed and new posts shall be installed at standard 12'-6" spacing.

SECTION 32 30 00 Page 3

2.1.2 New Guide Rail Elements

New guide rail elements shall meet the requirements for AASHTO M 180, Class A, Type II, galvanized guide rail. Rail elements shall be fabricated to the shapes and dimensions indicated in PDT 72M, Series RC-52M. Curved sections shall be shop formed to the radii indicated on the drawings, and verified by field dimensions. Hardware shall be as specified in paragraph "Hardware," herein.

2.1.3 New Guide Rail Posts

Steel posts shall be galvanized I-beam posts conforming to the requirements of PDT 408, Section 1109.03(a). Posts shall conform to the details and dimensions indicated on state highway department standard drawings. Posts shall be fabricated from structural steel shapes W 6 X 9, and shall be 6-feet in length.

2.1.4 New Guide Rail Terminal Sections

New guide rail terminal sections shall be fabricated from galvanized steel and shall conform to the requirement of PDT 408, Section 1109; or WVDOH Spec, Section 712.4. The configuration of new terminal sections shall be for mounting on back of rail element. Hardware shall be as specified in paragraph "Hardware." Terminal sections shall be placed at all free ends on guide rail.

2.1.5 Hardware

New hardware shall be provided at all connections of new guide rail elements to existingnew posts. Hardware (i.e. nuts, bolts, washers) shall be made of high strength steel (ASTM A 325), and galvanized in accordance with the applicable provisions of ASTM A 123/A 123M. Nuts and bolts shall be in accordance with the sizes and configurations indicated on applicable state highway department standard drawings.

2.1.6 Repair of Zinc-Coated Surfaces

Repair damaged surfaces with galvanizing repair method and paint conforming to ASTM A 780 or by application of stick or thick paste material specifically designed for repair of galvanizing, as approved by Contracting Officer. Clean areas to be repaired and remove slag from welds. Heat surfaces to which stick or paste material is applied, with a torch to a temperature sufficient to melt the metallics in stick or paste; spread molten material uniformly over surfaces to be coated and wipe off excess material.

PART 3 EXECUTION

3.1 REMOVAL OF EXISTING GUIDE RAIL

The existing guide rail elements (chain link and damaged steel beam type) and posts (chain link type only) shall be removed within the limits indicated. All demolition shall be done with care to avoid causing any damage to roadways, damage to any adjacent structures, and miscellaneous items not to be disturbed under this contract. The Contractor shall prevent damage to existing items to remain in-place, and any damage caused by the Contractor shall be repaired at no additional expense to the Government. Items not indicated to be removed, which are encountered in

SECTION 32 30 00 Page 4 the performance of the work under this contract shall not be removed without authorization of the Contracting Officer.

3.1.1 Safety and Health Provisions

Safety and Health requirements shall be established and maintained by the Contractor. Provisions for worker safety and health requirements shall be as provided in EM 385-1-1, shall be consulted and applicable sections complied with by the Contractor while performing the work specified in this section. Safe access throughout the entire project shall be continuously provided for Government personnel and the general public. Access shall be provided and maintained during every phase of the construction operations.

3.1.2 Items for Disposal, Reinstallations, and Salvage

Guide rail items which are not indicated to be reinstalled shall be disposed in accordance with Section 02 42 00 DISPOSAL OF MATERIALS.

3.1.3 Removal of Guide Rail

The Contractor shall not remove any total length of elements greater than that which can be reinstalled in a days work, including the attachment of rail elements. All guardrail elements indicated to be removed shall be completely removed from the project site and disposed of in accordance with the provisions herein. The Contractor is cautioned that the guide rail was previously painted with a system containing lead primer, and some of the coating may still be present.

3.2 INSTALLATION OF GUIDE RAIL

New guide rail elements, posts, terminal sections, and hardware shall be installed in accordance with the applicable requirements of PDT 408, Section 620 and PDT 72M, Series RC-52M, except that the guide rail shall be installed directly to the post. The location and alignment of the guide rail shall be as indicated on the contract drawings. Existing posts with steel beam guide rail shall be reused unless they have been damaged and replacement is approved by the Contracting Officer. All exposed steel shall be kept clean and free of all foreign material such as grease, oil, concrete spatter, chalk marks, crayon marks, dirt, and other contaminants.

Guide rail components damaged during handling and installation shall be repaired or replaced as directed by the Contracting officer. The existing post spacing is approximately 10 feet, on center. The new rail shall be field drilled as required for mounting. All damage to the galvanized coating, including drilled holes, shall be repaired in accordance with paragraph Repair of Zinc-Coated Surfaces.

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3.2 INSTALLATION OF GUIDE RAIL