Polygonal stave ring geometry — inner apothem scenarios.
How does changing inner apothem affect polygonal stave ring geometry when the other inputs stay fixed?
What this decision changes
The stated allowance, insertion, return or cut loss belongs to a particular physical detail. It must be applied on the same dimensional basis as the finished piece. Method basis: Uses an apothem rather than the centre-to-vertex radius. The two face widths differ because a radial wall thickness creates trapezoidal staves.
The focus is specified inner apothem. All other shared inputs remain fixed for each evaluated range.
Evaluate your supplied alternatives
Start with your measured plan and selected product data. The initial values and range are illustrative. Each scenario changes only specified inner apothem; the other entered values stay fixed.
9 evaluated scenarios
Baseline: Outside stave face width — 2.2 m. Rejected combinations remain visible below.
| Specified inner apothem | Outside stave face width | Change from baseline | Use this scenario |
|---|---|---|---|
| 0.6 m | 1.4 m | -0.8 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 0.725 m | 1.65 m | -0.55 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 0.85 m | 1.9 m | -0.3 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 0.975 m | 2.15 m | -0.05 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 1.1 m | 2.4 m | 0.2 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 1.225 m | 2.65 m | 0.45 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 1.35 m | 2.9 m | 0.7 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 1.475 m | 3.15 m | 0.95 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
| 1.6 m | 3.4 m | 1.2 m | Open in calculatorExact quantity breakdown
A regular polygonal ring with trapezoidal cross-sections is assumed. These geometry angles do not specify machine setup, joinery, pressure capacity or safe fabrication. |
Read the evaluated results
Compare finished demand with stock consumption. Some detail changes reduce useful cover or alter full-blank fit rather than simply adding proportional material.
- Replace every illustrative baseline measurement and selected product value with the inputs for your actual task.
- Enter a comparison range on the focused input's stated unit and quantity basis.
- Review rejected combinations and use the exact detail lines to distinguish measured demand from whole purchases.
- Open an evaluated scenario in the full calculator to save its original inputs and quantity breakdown to a browser material project.
Keep the comparison within scope
These are comparisons of already supplied details; the analysis does not choose joint, seam, fitting or installation requirements.
Uses an apothem rather than the centre-to-vertex radius. The two face widths differ because a radial wall thickness creates trapezoidal staves.
Dimensions, quantities, prices, timing and product properties are supplied by you. This tool does not select construction specifications or assess structural, electrical or hydraulic suitability.
Only the listed samples are evaluated. Intermediate values, alternate constraints and global cutting optimality are not inferred from the graph.
Continue with this quantity method
Polygonal Stave Ring Geometry CalculatorOther independent input decisions
Read the measurement and purchase guides
Quantity method and illustrative scenarios checked 6 October 2026. Methods and scope.