To support a beam for a residential deck, does a Sonotube pier need any rebar? A. We usually recommend that a minimum of two pieces of #4 rebar be placed vertically in an 8-inch-diameter concrete pier supporting a structure. A larger-diameter pier should have four or more pieces of vertical rebar.
How deep should my sonotube be?
Generally, the base of the pier should be deeper than the frost line and in contact with firm undisturbed soil. Always check with your building codes inspector and/or a licensed structural engineer.
How much concrete does it take to fill an 8 sonotube?
Concrete Requirements Size Chart
| Diameter (in.) | Height of Column | |
|---|---|---|
| 6 | .022 | .117 |
| 8 | .039 | .206 |
| 10 | .061 | .323 |
| 12 | .087 | .466 |
How do you calculate footing size?
How to Calculate Footing Size
- Determine the width and length of the cement slab in inches.
- Divide the width by 12 to convert it to feet.
- Divide the length by 12 to convert it to feet.
- Determine the depth or thickness that is required for the footing in inches.
- Multiply the width by the length and then by the depth.
Why to use sonotube?
Sonotubes are designed to alleviate both sources of delay by making these disposable molds easy to place and easy to remove. As noted, Sonotubes are also made from a type of reinforced cardboard. This makes each tube relatively lightweight, allowing anyone (including a DIYer) to work with them safely.
Why use sonotubes?
Why Use SonoTubes? Footings and piers are designed to support the weight of a deck through all types of weather and stress. SonoTubes create smooth-sided piers that resist uplift caused by frost; make it easier to estimate how much concrete you will need; and hold moisture in the curing concrete longer, resulting in stronger piers.
What are Sono tubes?
Sonotube is the commercial name for a paper tube used for forming concrete. It is used when builders want to make a concrete pillar. They set up this paper tube (comes in diameters from 8 inches to 56 inches and in lengths to about 18 feet or so) and pour concrete into it and let it dry.
