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DIY Construction & Material Guides

Step-by-step instructional guides explaining the math, physical aggregate densities, compaction factors, and slope formulas behind every BuildNook Hub calculator.

6 min readUpdated March 2026

How to Measure for Gravel: Steps, Depth Guidelines & Bulk Ordering

Accurately measuring the ground footprint before ordering bulk gravel saves hundreds of dollars in excess delivery fees or premature shortages. This guide breaks down geometric measurement methods and compaction rules.

Topics in this guide:
  • 1. Establish Boundary Lines and Mark the Perimeter
  • 2. Determine the Correct Finished Depth
  • 3. Calculate Cubic Feet and Convert to Cubic Yards
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Tools:GravelDriveway Gravel
7 min readUpdated March 2026

How to Calculate Roof Area: Pitch Multipliers & Slope Formulas

A roof pitch creates a hypotenuse that makes the real surface area considerably larger than the ground footprint beneath it. Learn how to calculate true sloped square footage safely from the ground.

Topics in this guide:
  • 1. Measure the Horizontal Building Footprint and Overhangs
  • 2. Determine Your Roof Pitch Ratio
  • 3. Multiply Projected Area by the Pitch Factor
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Tools:Roof AreaRoof Pitch

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