Example: air traffic controller
Overall Graded Results For Allowable Working
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520 Pipe Culverts - Wisconsin Department of Transportation
wisconsindot.gov(2) Submit contractor test results for gradation, liquid limit, and plasticity index testing to the engineer for approval before placing backfill. The engineer may waive contractor testing for known sources. 520.2.5.3 Trench Backfill (1) Furnish trench backfill consisting of material from the typical roadway section. Use material from the