Concrete yardage
Slab, footing, post-hole, stair, and bag-yield math sourced to ACI 332 / ASTM C94 / NRMCA + Quikrete + Sakrete data sheets. Practical-order cushion + ready-mix minimum-order warning baked in.
Concrete yardage calculator →How to Figure Concrete Yardage for a Slab (the Operator Walkthrough) →
Step-by-step concrete math for a residential slab — measure, convert to cubic yards, apply the waste cushion, and translate exact math into a practical ready-mix order. Worked example from a Chicago-suburb basement pour.
How to Figure Concrete Yardage for Steps and Stairs →
Monolithic-pour stair volume using the wedge approximation, riser/tread inputs from IRC 2021 residential code, and when stairs need ready-mix instead of bags.
How to Figure Concrete Yardage for Footings →
Footing volume math for strip and spread footings, frost-line depth in Chicago and Michigan, and the form-pressure considerations ACI 332 cares about.
How to Figure Concrete Yardage for a Circle (Post Holes and Round Footings) →
Cylinder volume for fence posts, deck footings, and round columns. Post depth per frost line, freeze-thaw cautions, and Quikrete bag count from manufacturer-spec yields.
How Many Bags of Concrete Make a Yard? (60 lb and 80 lb) →
60 bags of 60 lb mix or 45 bags of 80 lb mix per cubic yard — the math straight from Quikrete and Sakrete data sheets, with the cost-per-cubic-foot comparison and when to switch to ready-mix.