Excess Soil

Soil Expansion Factors and Takeoff Estimates

Ever have your terrain model crash when you try to model a vertical face? This is because Triangulated Irregular Network (TIN) surfaces are fundamentally 2.5D rather than truly 3D because they rely on a strict mathematical constraint: for any given horizontal (x, y) coordinate, there can only be a single vertical z-value. Because a TIN […]

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O.Reg 406/19 Amendments – October 2025

Excess Soil, Ontario Regulations / Eric

The U.S. National Geodetic Survey is planning to replace NAD83 (North American Datum 1983) with the modernized NATRF2022 (North American Terrestrial Reference Frame of 2022) in 2025 or 2026. This new geometric reference system is aligned with the Earth’s true center of mass—resulting in a 2.2-meter shift compared to NAD83. While the change may appear

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