SECTION_05_05_10_Metal_Galvanizing.docx
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SECTION 05 05 10 METAL GALVANIZING
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SECTION 05 05 10
SECTION 05 05 10
METAL GALVANIZING
| PART 1 | GENERAL |
| 1.1 | SECTION INCLUDES |
| A. | Application of a zinc coating on fabricated metal items. |
| B. | Repair of damaged galvanized surfaces. |
| 1.2 | REFERENCES |
| A. | ASTM A 123: Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products. |
| B. | ASTM A 153: Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware. |
| C. | ASTM A 780: Standard Practice for Repair of Damaged Hot-Dip Galvanized Coatings. |
| D. | ASTM B 6: Standard Specification for Zinc (Slab Zinc). |
| E. | ASTM E 376: Standard Practice for Measuring Coating Thickness by Magnetic-Field or Eddy-Current (Electromagnetic) Test Methods. |
| F. | FS TT-P-641: Primer Coating, Zinc Dust - Zinc Oxide (for Galvanized Surfaces). |
| G. | MIL P-21035: Paint, High Zinc Dust Content, Galvanizing Repair. |
| 1.3 | QUALITY ASSURANCE |
| A. | When requested, verify weight of zinc coating in accordance with ASTM E 376. |
| PART 2 | PRODUCTS |
| 2.1 | ZINC METAL |
| A. | Use zinc for coating that conforms to ASTM B 6 and is at least equal to the grade designated as "Prime Western". |
| PART 3 | EXECUTION |
| 3.1 | GALVANIZING |
| A. | Provide a zinc coating for those items indicated or specified to be galvanized as follows: |
| 1. | ASTM A 123 for galvanizing rolled, pressed and forged steel shapes, plates, bars and strips 1/8 inch thick and heavier. |
| 2. | ASTM A 153 for galvanizing iron and steel hardware. |
| 3.2 | WEIGHT OF COATING |
| A. | Apply zinc on 1/8 inch to 3/16 inch thick steel at a rate of at least 2-ounces per square foot of surface area. |
| B. | Apply zinc on 1/4 inch and thicker steels at a rate of at least 2.3 ounces per square foot with no individual test measuring less than 2-ounces per square foot of surface area. |
| 3.3 | REPAIR OF DAMAGED COATING |
| A. | Repair all shop damaged galvanized surfaces by the metallizing, hot stick or zinc rich paint, ASTM C 780 process. |
| B. | Repair field damaged, cut, burned or uncoated surfaces in the field by coating with a dust-zinc oxide paint conforming to FS TT-P-641 or MIL P-21035. |
END OF SECTION
METAL GALVANIZING Page 1
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