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10 concrete mistakes that crack slabs and drain budgets: no waste allowance, too much water, skipped base, missing joints and bad curing, and the fixes.

60 lb vs 80 lb concrete bags compared: yield, bags per yard, cost per cubic foot and lifting. Which size is cheaper per yard, and kinder on your back?

Concrete coverage chart: one cubic yard covers 81 sq ft at 4 inches, 54 at 6 inches. Chart by thickness, bag coverage, and yards per 100–1,000 sq ft.

How much concrete for a 10×10 slab? At 4 inches: 1.36 yd³ or 62 bags with waste. Full table for 2 to 6 inches with yards, bags, weight and cost.

How long does concrete take to cure? The full timeline for when to walk, drive and load, plus strength at 7 and 28 days and how weather changes it.

Bags vs ready-mix: which is cheaper? Break-even maths both ways, cost per yard, short-load fees and mixing time, for pours from 0.25 to 3 cubic yards.

How thick should a concrete slab be? The right thickness for patios, driveways, garage floors, RV pads and hot tub bases, plus base and rebar guidance.

How much does a concrete driveway cost? A line-by-line breakdown of concrete, base, forms, labour, removal and finishes, with two worked examples.

How many bags of concrete do you need? Work it out in two steps, job volume then bag yield, with the full 40, 50, 60 and 80 lb yield table.

How much is a yard of concrete? Full price breakdown: per-yard rate, delivery, short-load fees and the bagged alternative, with worked examples.