Premier Field Development Inc 6/25/2019

I I Phil Johnson Ballfields 33.46.16,19 City of Everett Parks&Community Services ATHLETIC FIELD DRAINAGE Itolerances: 1. Bedding shall be fine graded and prepared such that the pipe can be initially I placed with a variation from true line or grade,measured at each joint, of not more than 1/32"per inch diameter or'/2 maximum,provided that: Ia) A resulting level or back sloping length of pipe does not occur. b) No more than one-half of the permissible variation shall be accumulated between successive joints. I2. Pipe laid within these tolerances shall not be subjected to any further adjustment. Measurement for grade shall be taken at the pipe invert,NOT TOP OF PIPE. I Eccentricity of pipe barrels,with respect to jointing surfaces, shall not produce grade interruption adverse to flow or more than 1/4" maximum. 3. Catch basin elevations are critical. All grading shall taper smoothly with the 1 existing adjoining grades to the approval of the Landscape Architect. 3.03 INSTALLATION IA. All materials and installation shall conform to the 2016 Standard Specifications for road, Bridge and Municipal Construction(WSDOT and APWA),except where indicated. 1 B. Inspection and Testing 1. The Contractor,prior to commencement of construction, shall coordinate a I meeting with the Landscape Architect to set up a schedule for inspection. At this meeting,requirements will be established by the Landscape Architect for his,the County and the Owner's requirements for inspection. Landscape Architect to I inspect all piping prior to coverage to inspect slope fall with laser set up by Contractor. C. Installation of Field Under Drainage Drains I1. New drainage trenches shall be excavated to the lines and grades indicated on the Drawings, exercising care to maintain clean edges and sides in the trench. The I bottom of the trench shall be recompacted to at least 90 percent of maximum density to provide a firm and solid base. 2. All joints,caps and connections to tight lines shall be made in accordance with Imanufacturer's recommendations, in such manner as to prevent bedding material from entering the pipe. I 3. Native material removed from trench excavation shall be removed in its entirety from the field area so as to maintain required positive drainage patterns across the subgrade to the drain trenches. After drain trench installation is completed, I subgrade between trenches shall be regraded as necessary and recompacted to 90 percent of maximum density to provide a firm,dense surface for placement of permeable crushed rock base course. I Page 5 of 6 2/4/2019 Job#2019-054 Div 33 1 Provided to Builders Exchange of WA, Inc. For usage Conditions Agreement see www.bxwa.com - Always Verify Scal