Does a steep site need more soil testing than a flat one?

Often yes — a steep or sloping site can genuinely have more variable soil conditions across its area than a flat, uniform block, sometimes warranting additional boreholes to properly capture this variation.

Slope stability itself can also be a genuine additional consideration on steeper sites, sometimes requiring specific geotechnical assessment beyond standard foundation classification testing.

Your geotechnical engineer determines the appropriate scope of testing for your specific site’s slope and complexity — a steeper site isn’t automatically more testing, but its genuine complexity often warrants it.

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