REPAIR OF GALVANIZED SURFACES
562-1 Description.
Apply a coating of galvanizing compound over welded areas of galvanized structural members and over areas of previously galvanized members on which the galvanizing has become damaged.
562-2 Materials.
562-2.1 Areas 100 Square Inches or Less : Use a cold galvanizing compound containing
at least 92% zinc dust in the dry film.
562-2.2 Areas Greater than 100 Square Inches: Use a galvanizing compound as
specified in 975 -2.4.1 and listed on the Approved Product List ( APL).
562-3 Construction Methods.
Prepare surfaces and apply the galvanizing compound according to ASTM A780 and manufacturer’s recommendations. Apply additional coats on rough or pitted surfaces, when in the opinion of the Engi neer it is necessary to obtain acceptable cover. Follow the manufacturer’s recommended dry time between coats. Re-clean the areas not coated on the same day the cleaning is accomplished, or surfaces that have rusted, prior to coating. Apply the galvanizi ng compound to attain a uniform appearance free from all defects or failures. Submit repair procedure s to the Engineer for approval. All deficiencies will be corrected at no cost to the Department.
562-4 Basis of Payment.
No direct payment will be made fo r galvanizing compound coating of welded surfaces or for field repair of damaged galvanized surfaces . Include the cost to perform these operations, in the Contract price for the item which includes the member being so treated. FY 2023-24 Return to Table of Contents SECTION 563 ANTI-GRAFFITI COATINGS
563-1 Description.
Apply an anti-graffiti coating in accordance with the requirements of this Section to the areas shown in the Plans.
563-2 Materials.
Use anti-graffiti coating products meeting the requirements of Section 975 that are recommended for the base substrate by the manufacturer and listed on the Department’s Approved Product List ( APL). Do not use sacrificial coatings on steel structures.
563-3 Application.
563-3 1General: Apply anti -graffiti coatings in accordance with the
manufacturer’s product data sheet.
563-3.2 Protection of Adjacent Surfaces: Consider wind direction, velocity and
geographic location as having a major impact on all cleaning and anti -graffiti coating operations. Use a ll necessary precautions to prevent cleaning and anti -graffiti coating materials from being dispersed outside the work site. If conditions are such that material is dispersed to areas where vehicles or other property may be damaged, suspend operations unti l conditions improve and work can continue without affecting adjacent property. Protect all surfaces not intended to be coated, which are adjacent to, or in close proximity to the surfaces to be coated, during the application of anti -graffiti coating. Cl ean surfaces that are to be coated, as per the manufacturer’s product data sheet.
563-3.3 Surface Preparation: Remove all graffiti from the substrate. Prior to
applying any anti -graffiti coatings, prepare all surfaces to be coated in accordance with ASTM D4261 or ASTM D4258 and the manufacturer’s product data sheet. When the anti -graffiti coating or coating system is to be applied over an existing coating, apply a test patch (minimum area of 4 square feet) in accordance with this Section. Allow the test patch to cure a minimum of 7 days without any defects. No time extension will be granted as a result of this test requirement.
563-3.4 Correction of Deficiencies: Remove all applied anti -graffiti coatings
identified by the Engineer as damaged, defective, or otherwise not meeting these Specifications, in accordance with the manufacturer’s recommendations. Prepare the surface and reapply the coating in accordance with the manufacturer’s recommendations and as specified herein. Remove and correct all defi ciencies at no additional cost to the Department.
563-4 Method of Measurement.
The quantity to be paid for will be plan quantity, in square feet, of the area of anti - graffiti coating completed and accepted. The area will be based on the surface area show n in the Plans with no allowance for surface texture or variable depth surface profiles . FY 2023-24 Return to Table of Contents