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Rebar
Rebar is steel reinforcement placed in concrete to help it handle tension and reduce crack movement.
Why it matters
Concrete is strong in compression but weak in tension. Rebar helps concrete act like a team instead of a solo act.
Where people get this wrong
Rebar does not stop cracking. It helps keep cracked concrete from separating. Placement matters. Rebar sitting on the ground does not help much.
Real-world example
A slab cracks, but the two sides stay level and tight instead of shifting. That is the kind of quiet win reinforcement can provide.
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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