To obtain pricing from Vendors to furnish, deliver, and assemble at the jobsite Welded Aluminum Pipe and Aluminum Structural Plate with Headwalls for Division 9 County Bridge Maintenance to replace the existing, damaged failing pipe structure. A. PIPE IS TO BE FULLY WELDED INSIDE AND OUT TO HEADWALLS USING TWO ROOT WELDS AND TWO FINISH WELDS ON EITHER SIDE OF THE WALL. ALL FINISH WELDS ARE TO BE GROUND TO A SMOOTH FINISH. B. HEADWALL AND PIPE ARE TO BE REINFORCED PER AASHTO SPECIFICATIONS AND STRUCTURAL ENGINEER'S REQUIREMENTS. C. THE CONTINUOUS FLAT GASKET SHALL BE 3/8# THICK X 2FT WIDE AND MADE OF CLOSED CELL NEOPRENE RUBBER WHICH UPON ASSEMBLY PROVIDES A WATERTIGHT SEAL. D. THE PIPE MANUFACTURER MUST PROVIDE CERTIFICATION OF THE MEASURED DIMENSIONS OF THE PIPE, BANDS AND THE CONTINUOUS FLAT GASKETS. CERTIFICATION MUST STATE THAT THE BANDS AND THE GASKETS HAVE BEEN PRE-FITTED AND WILL SECURELY TIGHTEN AROUND THE SUPPLIED PIPE. CERTIFICATION OF THE DIMENSIONS MUST BE SIGNED BY THE MANUFACTURE’S REPRESENTATIVE AND DATED. E. PIPE SECTIONS AND BANDS SHALL BE ASSEMBLED AND ALPHANUMERICALLY / ALIGNMENT MATCH-MARKED AT THE PLANT SITE BEFORE SHIPPING TO VERIFY FIT.
