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11 NO NON, I I I I I I V`11 �V`VIVO TOO -`z '" r NSA NFOr -N� I nnr� I III-IJ,VI I V , � "Orr I VrT ON 560-8 .4 Machine Finished Surfaces : Apply a coating of rust preventative compound to all machine finished or similar surfaces that are not to be coated, or will not be coated immediately . 560-8 . 5 Surfaces to be Welded : Mask off surfaces within 1 inch of field welded connections before the application of any shop coating . Apply a mist coat of primer that is less than 1 mil dry film thickness to surfaces where shear studs will be welded . 560.9 Application . 560-9 . 1 General : Apply a complete coating system to all structural steel surfaces except surfaces indicated in 5600,, 8 . Apply a complete coating system to all surfaces that will become inaccessible after fabrication, erection, or installation . Apply the prime coat in the shop . Apply the intermediate coat in the shop or field. Only apply the finish coat after erection and after concrete work is complete . Prior to the application of any coating, inspect the substrate for contamination and defects , and prepare the surface in accordance with 560 . 7 before application of the next coat. Apply each coat including a stripe coat in a color that contrasts with the substrate or preceding coat . For exterior surfaces , apply a finish coat color meeting Federal Standard, 595B , Shade 36622 , unless otherwise specified in the Contract Documents . 560-9 .2 Weather and Temperature Limitations : Do not spray coating when the measured wind speed in the immediate coating area is above 15 miles per hour. Do not apply coatings when contamination from rainfall is imminent or when the ambient air temperature , NO relative humidity, dew point temperature, or temperature of the steel is outside limits of the coating manufacturer ' s product data sheet. 560-9 .3 Sealing Using Caulk: Completely seal the perimeter of all faying surfaces , cracks and crevices , joints open less than 1 /2 inch, and skip-welded joints using caulk. Apply the caulk to the joint following the caulk manufacturer ' s recommendations . Ensure the caulk bead I NO has a smooth and uniform finish and is cured according to the caulk manufacturer ' s recommendation prior to the application of the coating system . 560-9 .4 Protection of Adjacent Surfaces : Protect all surfaces and working mechanisms not intended to be coated during the application of coatings . Clean surfaces that have been contaminated with coatings until all traces of the coating have been removed. Do not allow material from cleaning and coating operations to be dispersed outside the work site . 560-9 . 5 Mixing and Thinning : Mix all coatings in accordance with the manufacturer ' s product data sheet . Only mix complete kits . Use thinners and solvents in accordance with the requirements of the coating manufacturer ' s product data sheet and confirm that the amount of thinner added does not result in the coating exceeding VOC regulations stated in Section 975 . Perform all mixing operations over an impervious surface with provisions to prevent runoff to grade of any spilled material . 560-9 . 6 Application Methods : Use coating application equipment and apply coatings per the coating manufacturer 's product data sheet. Application with brushes may be permitted for minor touchup of spray applications , stripe coats , or when otherwise approved by the Engineer. Adjust spray equipment to produce an even, wet coat with minimum overspray. Apply IN coatings in even, parallel passes , overlapping 50 percent . Agitate coatings during application as required by the coating manufacturer ' s product data sheet . 560-9 . 7 Stripe Coating : Apply stripe coats to achieve complete coverage and proper thickness on welds , corners , crevices , sharp edges , bolts , nuts , rivets , and rough or pitted surfaces . - 164- FPID ( S ) : 423186 - 1 - 581,,, 01