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The 2017 National Construction Estimator has a complete cross-referenced index. Find the subject you need in the left column. Then click on the subject link in the right column to jump to the costbook page.

2017 National Construction Estimator

Subject Subject links
Backfill 
  concrete excavationTop of Page 337  
  earthworkTop of Page 135  
  tilt-upTop of Page 359  
  trenchBackfill trenches  | Sprinkler Irrigation Systems (cont.)   | Trench Excavation and Backfill (cont.)