References & further reading
- Standard geometry references (CRC handbook / undergraduate solid-geometry treatments).
- API 650 / EN 14015 etc. for real storage tanks are outside this educational calculator’s scope.
Model assumptions
- Perfect geometry (right sections, uniform thickness not modeled as a separate shell).
- Horizontal/vertical cylinder modes use the stated fill height assumptions in the grid notes.
- Ellipsoid and frustum formulas follow standard solid geometry; numeric guardrails clamp degenerate inputs.
Shareable URL
This page does not expose “Copy shareable link” in the toolbar yet; record inputs manually or bookmark the localized path. Steam properties and pipe pressure-drop calculators are examples with query-string sharing.
Frequently asked questions
- Does listing handbooks or API 650 mean the tool is code-endorsed?
- No. Names are for traceability and scope only; they are not an endorsement by standards bodies and do not replace licensed engineering review.
- How is the partial liquid volume of a horizontal versus vertical cylinder computed?
- A vertical cylinder gives volume linearly with fill height; a horizontal cylinder requires integrating the circular-segment cross-section, which this tool evaluates analytically from fill height h and radius R. Heads (flat, ellipsoidal, hemispherical) are added according to the selected type, and the table notes define the fill-height convention for each mode.
- What is the centroid (centre of gravity) height used for?
- Centroid height is used for moment estimates in seismic, wind, lifting and foundation design. This tool gives the centroid along the axis of symmetry for ideal shapes; a real tank with nozzles, stiffening rings and non-uniform wall thickness shifts the centroid, so use a detailed model for final figures.
Extended copy on this page (headings, references, assumptions, FAQs) may be drafted or localized with AI assistance; engineering judgment and governing codes still apply. Numerical models run locally in your browser as implemented. For contract-critical work, cite primary standards and qualified review.