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ST0701-SP100412 (9/8/2011) Keith Marvin - Bridge PaintPage 1 From: Per Birdsall To:Keith Marvin Date: 4/12/2010 1:51 PM Subject: Bridge Paint Attachments:2006 Bridge Rail Preparation and Painting Specification.doc Attached is the specification I had prepared for the last time we had bridges painted. Per PS On my way with the invites. 2006 City of Coppell Bridge Rail Preparation and Painting Specification CLEANING AND COATING OF EXISTING CONCRETE SURFACES PART 1. GENERAL 1.01 EXISTING CONCRETE SURFACES A.The work consists of cleaning and coating the existing concrete surfaces with an applied finish coating in accordance with these Special Provisions. B.The surfaces to be cleaned and coated are as follows: 1. For example: Columns, caps, end bents, overhang areas, barrier walls, etc. These areas would vary from project to project. 1.02 MATERIAL A.The coating material shall be a commercial product designed specifically for this purpose. One manufacturer shall manufacture all coating material and shall be delivered to the job in sealed containers bearing the manufacturer’s original labels. The Contractor shall provide a copy of the manufacturer’s printed instructions to the City. B.The coating material in the finished state shall be capable of accommodating the thermal and elastic expansion ranges of the substrate without cracking. 1.03 SURFACE PREPARATION A.The concrete will be cleaned free of any dirt, debris and delaminated coating, removed by power washing and allowed to completely dry. B.After surface cleaning, all cracks in the concrete will be repaired using Thoro Knife Grade or equal; any spalls in the concrete will be repaired using Thoroc Concrete Repair Mortar or equal. 1.03a OVERSPRAY A. Great care shall be taken to protect surrounding structures, passing automobiles, and pedestrians from the power washing spray and the debris it may carry. 1.04 APPLICATION A.The surfaces shall be clean prior to the application of the finish coating. B.The concrete surfaces shall be masked to provide a uniform, neat dividing line between surfaces which are coated and uncoated. C.The concrete will be coated with two (2) coats of Thorocoat waterproof acrylic coating (or equal) and shall be applied by qualified personnel experienced in the work in a manner recommended by the manufacturer. When the finish coating is applied by spraying, the Contractor shall supply spray equipment capable of maintaining a constant pressure necessary for proper application. All coating materials shall be mixed, applied and cured in accordance with the manufacturer’s printed instruction. D.As alternates to spray equipment, the application may be brush or roller as long as satisfactory results are obtained. Page 1 of 5 2006 City of Coppell Bridge Rail Preparation and Painting Specification 1.04a OVERSPRAY A. Great care shall be taken to protect surrounding structures and passing automobiles from paint over spray. 1.05 FINISHED PRODUCT A.The texture of the completed finish coat shall be generally similar to that of rubbed concrete. The completed finished coating shall be tightly bonded to the structure and present a uniform appearance and texture. If necessary, additional coats shall be applied to produce the desired surface texture and uniformity. B. Upon failure to adhere positively to the structure without chipping, flaking or peeling, or to attain the desired surface appearance, coatings shall be removed entirely from the structure and the finish coating shall be reapplied after proper surface preparation until the desired finished product is achieved. 1.06 COLOR A. The color of the applied finish coating shall be similar to Federal Color Standard No. 595 or color as selected by the City Engineer or his assigns CLEANING AND COATING OF EXISTING METAL SURFACES PART 1. GENERAL 1.01 EXISTING METAL SURFACES A.The work consists of cleaning and coating the existing concrete surfaces with an applied finish coating in accordance with these Special Provisions. B.The surfaces to be cleaned and coated are as follows: 1. For example: Pipe Railing, decorative fencing, etc. 1.02 MATERIAL A.The coating material shall be a commercial product designed specifically for this purpose. One manufacturer shall manufacture all coating material and shall be delivered to the job in sealed containers bearing the manufacturer’s original labels. The Contractor shall provide a copy of the manufacturer’s printed instructions to the City. B.The coating material in the finished state shall be capable of accommodating the thermal and elastic expansion ranges of the substrate without cracking. Page 2 of 5 2006 City of Coppell Bridge Rail Preparation and Painting Specification 1.03 SURFACE PREPARATION A.The metal will be cleaned free of any dirt, debris and delaminated coating, removed by power washing and allowed to completely dry. B.After surface cleaning, the surfaces shall be closely inspected for areas that may need repair such as: cracks at welds, corrosion beyond resurfacing, etc. The City shall be notified of all defects/damages existing on the structure before painting/coating. Repairs required will be performed by others. 1.03a OVERSPRAY A. Great care shall be taken to protect surrounding structures, passing automobiles, and pedestrians from the power washing spray and the debris it may carry. 1.04 APPLICATION A.The surfaces shall be clean prior to the application of the finish coating. B.The surrounding concrete surfaces shall be masked to provide a uniform, neat dividing line between surfaces. C.Two (2) coats of Sherwin Williams Direct to Metal (or equal) paint shall be applied by qualified personnel experienced in the work in a manner recommended by the manufacturer. When the finish coating is applied by spraying, the Contractor shall supply spray equipment capable of maintaining a constant pressure necessary for proper application. All coating materials shall be mixed, applied and cured in accordance with the manufacturer’s printed instruction. D.As alternates to spray equipment, the application may be brush or roller as long as satisfactory results are obtained. 1.04a OVERSPRAY A. Great care shall be taken to protect surrounding structures and passing automobiles from paint over spray. 1.05 FINISHED PRODUCT A.The finish coat shall be smooth. The completed finished coating shall be tightly bonded to the structure and present a uniform appearance. If necessary, additional coats shall be applied to produce the desired surface texture and uniformity. B. Upon failure to adhere positively to the structure without chipping, flaking or peeling, or to attain the desired surface appearance, coatings shall be removed entirely from the structure and the finish coating shall be reapplied after proper surface preparation until the desired finished product is achieved. 1.06 COLOR A. The color of the applied finish coating shall be matched to the existing color or color as selected by the City Engineer or his assigns. Page 3 of 5 2006 City of Coppell Bridge Rail Preparation and Painting Specification CLEAN UP & FINAL INSPECTION A.All dirt, debris, paint chips, etc. removed from the structures during this process shall be picked up, removed from the worksite and disposed of properly. B.All blasting media (if used) shall be picked up, removed from the worksite and disposed of properly. C.Any accidental over spray shall be removed from the surface(s) to which it adhered to the satisfaction of the City’s Inspector. Should removal create additional irregularities that surface may need additional work such as painting in order to rectify the condition caused by the over spray. D.The contractor shall notify the City when all work per the contract has been completed and is ready for inspection. The contractor will need to schedule a time for that inspection and the contractor’s representative will need to present during that inspection. E.A punch list from the inspection will be created if necessary. This punch list will need to be addressed prior to approval of the work. HOURS OF OPERATION Since all bridge structures are near or adjacent to traveled vehicle lanes, any work that will obstruct any portion of a traveled lane will be restricted to the hours of 9:00 AM until 3:00 PM Monday through Friday to provide for full use of those lanes during rush hours. Weekend and night work will not be permitted unless special permission has been obtained from the City’s Engineer. Pedestrians may also need to considered if the structure is on a school route. TRAFFIC CONTROL The City of Coppell will provide the traffic control devices and a plan per roadway including adjacent sidewalks. The contractor will be responsible for setting out and removing the devices per the plan. Work must be in progress during the time that the devices are being used in the roadway per the times stated previously. There are a limited number of devices available whereby work in or immediately next to the roadway may have to progress from site to site not simultaneously. All personnel will be required to wear ANSI “Class 1” safety apparel (vest) during daytime hours. “Class III” will be required for nighttime if permitted. Page 4 of 5 2006 City of Coppell Bridge Rail Preparation and Painting Specification This bid consists of five (5) structures. Each location is to bid separately in case funds are insufficient to complete all five (5) structures at this time. Bridge A 18-057-V001-00-002 This bridge is over Denton Creek that is south of Natches Trace on Denton Tap Rd. Bridge B 18-057-V001-00-003 This bridge is over Cottonwood Creek that is north of Parkway Blvd. on Denton Tap Rd. Bridge C & D These bridges are the north and south direction structures over Grapevine Creek that is south of Meadowcreek Rd. on Denton Tap Rd. Bridge E 18-057-V001-00-004 This bridge is over the Cottonwood Creek Branch that is west of Cowboy Dr. on Parkway Blvd. Note: The bridge light poles are not included in this contract. Page 5 of 5