Add up a pier built in steps.
⚙️Calculation Parameters
📊Calculated Output
How Stepped Pier Volume Calculator Works?
To calculate a stepped pier, the Stepped Pier Volume Calculator splits the pier into stacked cylinders and adds their volumes. The process takes 4 steps.
List each section
Enter one row per section, from bottom to top. A section has 1 diameter and 1 height.
Calculate each cylinder
The calculator applies V = π × r² × h to every row.
Add the sections
The tool sums the section volumes into 1 pier total in cubic feet (ft³) and cubic yards (yd³).
Multiply by pier count
Enter the number of identical piers and a waste margin to get the order total.
Stepped Pier Volume Calculator Formula
The Stepped Pier Volume Calculator adds 1 cylinder per section.
Section volume
Vᵢ = π × (Dᵢ ÷ 24)² × (Hᵢ ÷ 12)Dᵢ and Hᵢ in inches give ft³.
Pier total
V = V₁ + V₂ + … + Vₙn is the number of sections.
Total height check
H = H₁ + H₂ + … + HₙH must match the hole depth plus reveal.
Worked example: 24 in × 12 in base, 16 in × 24 in middle, 12 in × 24 in top
- V₁ = 3.142 ft³, V₂ = 2.793 ft³, V₃ = 1.571 ft³
- V = 7.505 ft³ = 0.2780 yd³
- 80 lb bags = 7.505 ÷ 0.60 = 12.5, so buy 13 bags
Stepped Pier Volume Calculator Conversion Table
The stepped pier conversion table lists 5 common stacked layouts, written as diameter × height in inches from bottom to top.
| Layout | Sections (in) | Total height | ft³ | yd³ | 80 lb bags |
|---|---|---|---|---|---|
| 2-step deck pier | 16×12 + 10×36 | 48 in | 3.03 | 0.112 | 6 |
| 3-step heavy pier | 24×12 + 16×24 + 12×24 | 60 in | 7.50 | 0.278 | 13 |
| Footing + tube | 20×8 + 12×40 | 48 in | 4.07 | 0.151 | 7 |
| 2-step column | 18×24 + 12×48 | 72 in | 6.68 | 0.247 | 12 |
| 3-step porch pier | 18×12 + 14×18 + 10×30 | 60 in | 4.73 | 0.175 | 8 |
Pour the widest section first and set the next form on the stiffened concrete or on a form support.
What is Stepped Pier Volume Calculator?
A Stepped Pier Volume Calculator is a concrete calculator for piers built from 2 or more stacked cylinders of different diameters.
Stepped piers put a wide base under a narrower column. The wide base spreads the load over more soil, and the narrow column saves concrete above. A 3-section pier with 24 in, 16 in and 12 in steps holds {f(tot,2)} ft³, while a straight 24 in pier of the same 60 in height holds {f(cyl(24,60),2)} ft³.
The calculator handles up to any number of sections and keeps a running height total.
What are the uses of Stepped Pier Volume Calculator?
There are 4 main uses of the Stepped Pier Volume Calculator.
Spread-base piers
Builders place a wide short cylinder under a standard tube.
Reducer tube setups
Crews stack 2 tube sizes to cut concrete in the upper section.
Retrofit pier extensions
Contractors add a narrower tube on top of an existing pier.
Volume audits
Inspectors check concrete tickets for multi-section piers.
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