Calculating Elevation Difference and Planning
At 15:36 in
Teaching a NOOB how to read grade, Run a laser & change elevations on a jobsite- PT 1/2. 4k video
What happens here
After establishing the benchmark, the presenter demonstrates taking a reading further away from the benchmark to calculate the difference in elevation. He lays the 16-foot grade rod on the ground and explains that for proper drainage (1 inch drop per 8 feet), being 16 feet away means the target elevation should be 2 inches lower than the benchmark. By reading the grade rod at this new point and comparing it to the benchmark, they can determine if they need to cut or add material. The video ends here, with the actual grading work being saved for a 'Part 2'.
Goal: Calculate elevation differences to plan for cutting or adding grade.
Tools and materials
- Grade Rod DeWalt — Measuring elevation at various points on the job site
- Laser Receiver DeWalt — Detecting the laser beam and indicating height
- Smartphone or Notebook Any — Recording calculated target elevations
What they say
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What they say
(2,501 characters)Auto-generated from the video audio.