Hardscape & GradingPregunta 62 de 100
On expansive clay soils, hardscape and foundations are at risk because the soil does what?
a.Swells when wet and shrinks when dry, causing movement
b.Stays perfectly stable in all conditions
c.Never holds water
d.Turns to sand over time
Explicación
Expansive clays contain minerals that absorb water and swell, then shrink as they dry, producing repeated ground movement that cracks slabs and walls. Managing moisture and using proper base and drainage details reduces this movement. Severe cases may need engineered foundations.
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