506.40Description This work shall consist of surface preparat ion and application of

506.34 TSC Application Record the batch and lot numbers of the consumables.

Measure the environmental conditions in the immediate vicinity of the p iece(s) being coated during the coating operation and during the entire cure period for intermediate and top coat. Provide two data loggers capable of measuring ambient hu midity and temperature. The data loggers shall come with software that can download the data onto a computer. Print out the data and provide a copy to the QAI for review pri or to applying the subsequent coat of paint. Place the data loggers in the immedi ate vicinity of the coating operation during the entire application and curing cycl e. The data will be used to determine that the cure/recoat time requirements for each coat have been met. Failure to comply will result in the coating being cured for the maximum t ime necessary to assure adequate cure as de termined by the Fabrication Engineer.

506.35 Seal Coat and Top Coat Application (Paint) Apply a wash primer and/or seal

coat of 2 to 3 mils thickness . The seal coat shall be compatible with an epoxy intermediate coat and a polyurethane top coat from the NEPCOAT QPL. Provide certification of compatibility between the seal coat and interm ediate coat from the intermediate coat/top coat manuf acturer. Top flanges of beams r equiring shear connectors shall receive a seal coat only.

506.36 Materials Provide mater ials in accordance with 506.11.

506.37 Mixing and Application Mix and apply in acc ordance with 506.14.

506.38 Dry Film Thickness Measure and record the DFT in accord ance with 506.15.

506.39 Touch-up and Repairs Repai r damage to TSC by re-blastin g the damaged area

and re-applying TSC in accordance with this Specification. Per form touch-up and repairs to paint in accordance with 506.16. FUSION BONDED EPOXY COATING

506.40 Description This work shall consist of surface preparat ion and application of

Fusion-Bonded Epoxy (FBE) coating, in accordance with the Plans and this Specification, including measuring and documenting DFT and testing for holiday s and other discontinuities in the epoxy coating. The FBE shall be applied to all surface areas indicated on the Plans. Perform surface preparation and application of FBE in accordanc e with the following Specifications:

506.41 Materials The FBE coating shall meet all of the physica l and testing

requirements of the applicable Specifications above (including Annexes). Provide a certification that identifies the coating, batch or lot number, date of manufacture and test results. Supply patching material from the same manufacturer.

506.42 Surface Preparation Prepare the surface(s) in accordanc e with applicable

Specifications listed above. Grind all welds flush on spiral w elded pipe pile prior to abrasive blast cleaning.

506.43 Inspection The DFT shall be between 12 mils and 20 mils , unless otherwise

specified. Measure the DFT using a fixed-probe gauge in accord ance with SSPC-PA 2. The testing procedure and reporting shall be in accordance with AST M G12. The frequency of testing shall be each piece coated, unless a lesser frequency o f testing is directed by the Fabrication Engineer. After curing, the coating shall be checked for holidays (pinhol es not visible to the unaided eye) using a 67½ Volt d-c, wet sponge, holiday, detecto r, in accordance with the requirements of ASTM G62, Test Me thods for Holiday Detection in Pipeline Coatings. An average of more than five holidays per foot, in the coated leng th of a pile, will be cause for rejection of that pile.

506.44 through 506.59- RESERVED

506.60 Method of Measurement Protective coating shall be measu red by the lump sum,

complete and accepted. The coating limits shall be as shown or described in the Contract Documents.

506.61 Basis of Payment All work f or Protective Coating will b e paid for at the lump

sum price for the respective item. Payment will be full compen sation for all labor, materials and equipment required to complete the surface preparation and coating work, including, but not limited to, coating and cleaning materials, staging or acce ssing, testing, surface preparation, cleaning, application, curing and repairs. Payment will be made under: P a y I t e m s P a y U n i t 506.9102 Zinc Rich Coating System (Shop Applied) Lump Sum 506.9103 Galvanizing L u m p S u m 506.9104 Thermal Spray Coating (Shop Applied) Lump Sum 506.9106 Fusion Bonded Epoxy Coating L u m p S u m 5-99 SECTION 507 - RAILINGS

507.01 Description This work shall consist of furnishing all m aterials for, and

construction of, bridge rail, handrail, and barrier mounted bri dge rail in accordance with these specifications and the lines and grades shown on the Plan s.

507.02 Materials Materials shall meet the requirements of the following Sections of

Division 700 — Materials:

Steel Bridge Rail: Structural Steel 713.01 P r e f o r m e d P a d s 713.03 Aluminum Rail: Preformed Pads 713.03 A l u m i n u m R a i l i n g s 716.01 Pipe for Steel Pipe Hand Railing s hall conform to the requireme nts of ASTM A53, Grade A or B.