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Concrete cover
Concrete cover is the concrete thickness between the surface and the steel reinforcement.
Why it matters
Proper cover protects steel from moisture and corrosion.
Where people get this wrong
Steel too close to the surface can rust and cause spalling. Steel too deep can reduce effectiveness.
Real-world example
A front step starts flaking and popping chunks. That can happen when reinforcement is too close to the surface and rust expands.
Where this hits your build
This matters during site work and foundation. Mistakes here get buried and are expensive to fix later. Pay attention before concrete is poured.
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