688001 -* Clean and Paint Existing Steel Bridge Lump Sum

WV · 2023 Standard SpecificationsBook pages 791–791View official source ↗

771 SECTION 690 SURFACE PREPARATION AND POWDER COATING OF NEW GALVANIZED STEEL FOR HIGHWAY SIGNING AND LIGHTING STRUCTURES

690.1 -GENERAL : 690.1.1 -Purpose and Scope: This Specification provides the material and workmanship requirements for the surface preparation and powder coating of new galvanized steel surfaces. The work consists of surface preparation and application of the powder coating system.

690.1.2 -Reference Standards: The latest edition of the following standards and regulations form a part of this specification.

A.American Society for Testing and Materials (ASTM)

1.ASTM A123/A123M, Standard Specification for Zinc (Hot Dip Galvanized)

Coatings on Iron and Steel Products

2.ASTM A153/A153M, Standard Specification for Zinc Coating (Hot Dip) on Iron

and Steel Hardware

3.ASTM A780, Standard Practice for Repair of Hot -Dip Galvanized Coatings

4.ASTM B201, Standard Test Method for Testing Chromate Coatings on Zinc and

Cadmium Surfaces

5.ASTM D4285, Standard Test Method for Indicating Oil or Water in Compressed

Air

6.ASTM D4414, Standard Practice for Measurement of Wet Film Thickness by Notch

Gages

7.ASTM E376 Standard Practice for Measuring Coating Thickness by Magnetic -Field

or Eddy -Current (Electromagnetic) Test Methods

B.Material Procedures (MP )

1.MP 708.40.00 -Procedure for the Determination of Structural Painting Film

Thickness.

2.MP 688.02.20 -Guide for Contractor’s and Fabricator’s Quality Control Plan for

Painting Structural Steel.

C.The Society for Protective Coatings

1.SSPC -SP 1, Solven t Cleaning

2.SSPC -SP 2, Hand Tool Cleaning

3.SSPC -SP 3, Power Tool Cleaning

4.SSPC -SP 7, Brush -Off Blast Cleaning

D.Equipment, and Coating Manufacturers Published Instructions.

690.2 -PRODUCTS : 690.2.1 -Hot-Dip Galvanized Materials: Material to be powder coated is required to be Hot-Dip galvanized as described in ASTM A123 and A153.

690.2.2 -Hot-Dip Galvanizing Requirements: Water quenching or chromate conversion coating shall be avoided as these processes interfere with paint adhesion and surface preparation. Testing for the presence of chromate coatings in accordance with ASTM B201 can be conducted if necessary.

Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 791–791 of 1,006.

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711 The applicable sections of 711, the dry film thickness shall be in accordance with

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