01-25-2016 Council Packet - Laserfiche WebLink

Home Search

2. Remove factory -applied coatings in the area to be soldered, from materials such as alloy -coated copper or alloy -coated stainless steel. Use solvent recommended by manufacturer. 3. Mechanically clean, flux, and smoothly pre -tin with solder edges of sheets and other locations to be soldered. Tinning shall be thin, uniform in thickness, and 1 1/2" wide on both sides of sheet at folded locked seam locations. 4. Immediately prior to joining pieces to be soldered, mechanically clean pre -tinned surfaces, wipe clean, dry, and fully coat with flux. Use least corrosive flux suitable for given application. 5. Slide pieces together and neatly dress down with a block of wood and mallet and/or dead -blow hammer 6. Perform soldering with heavy soldering coppers of blunt design, properly prepared and tinned before using. They shall weigh not less than 10 lbs. per pair, except when acetylene gas -heated soldering copper torch is used, copper itself shall weigh not less than 1.25 lbs. Soldering with torch alone is not acceptable. 7. Perform soldering slowly with well heated copper. Thoroughly heat surfaces to be soldered. Use heated surfaces rather than the soldering copper, to melt the solder and draw it into the seam. 8. Use ample solder. Seam shall show at least one full inch of evenly flowed solder. 9. Whenever possible, solder in flat position. At sloped seams, start down- slope and work up-slope. Solder seams a second time on slopes equal to or greater than 45 degrees. 10. Neutralize and remove flux residue as recommended by the flux manufacturer and the American Welding Society. This may include items such as mechanical removal, hot acidified water wash, water and washing soda (sodium carbonate) wash and clan water rinse after soldering. C. Counterflashing at Wall and Curbs: 1. Counterflashing shall be designed and fabricated in minimum 96 -inch lengths where job dimensions allow (lesser lengths at curbs). Skirt member shall be of size indicated with bottom edge folded under 1/2 inch, fabricated in such manner as to hold the bottom firmly against the flashings, and formed to fit field conditions. Skirt members, when installed, shall be securely fastened with gasketed screws and/or fasteners as detailed. 2. Coping cover plates shall be 6 inches wide, and counterflashing shall have S -slip end joints provided, as detailed, and be fabricated of same gauge and material as flashing. Furnish complete with a continuous ribbon of flashing sealant as shown on details. Flashing and Sheet Metal 07 62 00-8 City of Lino Lakes Lino Lakes Fire Station #1 RSI Project # 15-12120-02