Earthwork
Trench volumes
See the difference between vertical-wall and sloped-trench quantities.
Chapter 3 · book page 26Video in preparationOpen study notesThe book companion · 2027 edition
See the method.
Understand the work.
A focused study library for the calculations and concepts that benefit most from a visual explanation.
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Six focused walkthroughs plannedEarthwork
Swell, shrinkage & truck loads
Keep bank, loose and compacted volumes separate through each step.
Chapter 3 · book page 33Video in preparationOpen study notesLayout
Grades, inverts & leveling
Follow the relationship between slope, distance and pipe elevations.
Chapter 3 · book page 38Video in preparationOpen study notesSafety
OSHA soil types & sloping
Connect soil classification and slope geometry with the scope of the applicable rule.
Chapter 4 · book page 51Video in preparationOpen study notesPipe & testing
Thrust & leakage testing
Set up units, pressure, geometry and the assumptions in a worked problem.
Chapter 5 · book page 68Video in preparationOpen study notesEstimating
Markup vs. margin
Build a price from cost and check the profit against the selling price.
Chapter 7 · book page 89Video in preparationOpen study notes