9419 (2) - Laserfiche WebLink

Home Browse Search

1 January 23, 1996, the contractor using a Drott 40 trackhoe and a Cat D6 dozer completed excavation for relocation of City of Grand Junction's 18-inch waterline and 2-inch filler line is completed. The contractor cut existing 18-inch diameter pipe and began installing 90° elbows using meg-a-lug connections to a 18-inch diameter (DR-18 AWWA C-905) PVC pipe. The 2-inch diameter filler line is schedule 40 PVC pipe rated at 280 psi at 73°F. Clearance between bottom of 42-inch pipe and 24-inch casing is 16-inches. The bottom section of the 18-inch pipe and 2-inch pipe are encased in a 24-inch diameter 20-foot long steel pipe. January 31, 1996, the contractor discovered they had come off the wrong stake when laying control for the 90° elbows on the 18-inch waterline. Contractor's surveyors called in to verify and establish new control to relocate elbows. Contractor cut and reinstalls their connections. March 18, 1996, City of Grand Junction representative ran a hydrostatic pressure test and test was satisfactory. Reference Photos: CN-1745-417-28NA and CN-1745-417- 29NA Gates 1 The gates provided were from Hydro Gate Corporation. There were six slide gates required which ranged in sizes from 36"X36" to 48"X60". One sluice gate, one shear gate, and one canal gate were also required. The gates were attached to the structures using stainless steel epoxy encapsulated anchors. Holes for the anchors were core drilled. After installation the space behind the gate seat was hand grouted. Field touch up painting where required was done after installation. Slide Gates The six slide gates had aluminum frames and slides. Their sizes are as follows: 1- 36"X36", 4-42"X60" and 1-60"X60". 1 Sluice Gate 1 The 42" sluice gate, model 101 C has a cast iron frame and slide. Shear Gate The 8" diameter shear gate, model F-3000, has a cast iron frame and a bronze slide. Delivery and Installation March 13, 1996, slide gates are delivered to jobsite. Const-12