Cubic yards and 40, 60 or 80 lb bags of concrete to fill any number of round tube forms
Finished the sonotube concrete? Snap a before and after. The photo maker lines them up into one image you can post, and a free Blueprint account keeps the photos with your measurements and materials.
Pick one for a step-by-step plan with tools, materials and costs, or tell us in your own words.
A Sonotube (or any cardboard tube form) is a cylinder, so the concrete it holds is pi times the radius squared times the depth. Enter how many tubes, their inside diameter, and how deep you will pour, and this tool returns cubic yards for a ready-mix order and bag counts for premix.
Bag counts use the yields printed on standard premix: 0.60 cu ft for an 80 lb bag, 0.45 cu ft for 60 lb and 0.30 cu ft for 40 lb. Holes are rarely perfect cylinders below the tube, so keep a waste allowance of 10 percent or more.
Not sure what diameter you need? The deck footing size calculator works it out from the load and your soil. For square columns or a footing poured with the piers, use the concrete column calculator.
Mix ratios, curing times, reinforcement guidelines, and finishing techniques
Visual reference illustrating common mortar joints and weather resistance advice
Block selection, base preparation, drainage requirements, and height limitations