Name what each height actually measures
Empty pallet base height is different from the height of cargo above the base and from total loaded height. Label the measurement’s starting and ending surfaces before entering it in a tool. A total-height field expects the complete standing envelope including the base. A carton-height field expects one outer shipping case in its allowed stacking orientation. Confusing those meanings can add the base twice or omit it entirely, even when all the numeric values are accurate.
The site’s TI-HI calculation uses base height once and adds a whole number of case heights. If the maximum-height input describes total loaded height, available cargo space is that limit minus the base. The tool does not infer protective caps, interlayer sheets or irregular tallest features. Account for those physical additions in the requirement and final measurement rather than assuming the base field represents everything below or around the cases.
Reproduce a clear whole-layer example
Use an EPAL 1 reference base of 144 mm, cases 250 mm tall and a hypothetical accepted total-height limit of 1500 mm. Available height above the base is 1500 − 144 = 1356 mm. The complete-layer count is floor(1356 / 250) = 5. The loaded arithmetic height is 144 + 5 × 250 = 1394 mm. Five cargo layers alone measure 1250 mm, which must not be called the complete standing height.
If someone reports cargo height as 1500 mm above the pallet, the equivalent total envelope before other materials is 1644 mm. That is a different requirement from a 1500 mm total limit. Likewise, entering the measured complete 1394 mm as cargo height and then adding the base again gives 1538 mm. The added 144 mm is a bookkeeping error, not a taller physical load. Save both the object definition and the numeric value.
| Field or measurement | Value | What is included |
|---|---|---|
| Base height | 144 mm | Empty pallet |
| Five cargo layers | 1250 mm | Cases above base |
| Total before extra materials | 1394 mm | Base once plus cases |
| Accepted total-height limit | 1500 mm hypothetical | Requirement for the complete envelope |
| Incorrect double-base sum | 1538 mm | Do not reuse total as cargo height |
Count sheets and caps at their actual positions
Suppose the five layers have four 3 mm sheets between them and a 20 mm cap above the last. Additional height is 4 × 3 + 20 = 32 mm. The total becomes 1426 mm. There is no interlayer sheet after the top layer unless the actual packaging adds one there. Record the number and location of materials rather than applying an unnamed allowance to every layer. The values here are stated example components, not a packaging recommendation.
To represent a maximum-height scenario that reserves those fixed additions, the actual requirement must be translated consistently into the tool inputs. For this five-layer example, 1500 − 32 = 1468 mm remains for the base and cases, still allowing five. If sheet count changes with layer count, the reserve also changes, so check each proposed plan explicitly. The tool’s simple base-plus-cases height formula is not a general simulation of every packaging material.
A layer count and a measured finished height are separate evidence
Carton deformation, uneven layers, partial cases and protective features can make the measured load differ from the sum of component specifications. Retain the calculated height for explaining the plan and measure the normal shipping envelope for transport. Record which point is tallest. An average across several columns is not the maximum height if the load has a protruding case or cap. The finished-envelope measurement should not be replaced with a convenient whole-layer estimate.
If a hypothetical accepted height of 1420 mm is used, the 1394 mm base-and-case calculation fits, while the 1426 mm version with stated materials exceeds it by six. That comparison concerns the height requirement only. A door or interior envelope may impose another limit, and handling requires its own space. Do not claim that a positive residual is a universal safety clearance or that a height-only result establishes acceptable gross mass.
Keep a height input worksheet
Write base height, case orientation and height, whole layers, cargo-only height, sheets and cap, calculated total, measured tallest point and accepted total-height requirement. State whether each number is measured, nominal or a requirement. An unknown base or cap must stay unresolved; enter zero only when intentionally absent and documented. Keep the date and packaging revision with the calculation.
Apply the worksheet to the correct tool fields
Use the TI-HI calculator with its pallet-height, case-height and maximum-loaded-height fields for the stated whole-layer task. Select the intended mode and confirm the displayed fields before interpreting HI. Use the cube calculator’s known loaded-dimensions mode when you have measured the complete envelope directly. Do not add another pallet base to that known total height.
When sharing the plan, include the field meanings and fixed additions with the numbers. A recipient who sees only 1500 mm may interpret cargo height rather than a total limit. If the packaging or pallet model changes, update the base and material record and recalculate the height. The resulting layer quantity still needs the applicable packaging, support and weight review for the actual load.
Reference and example scope
EPAL 1 official specification supports the 144 mm base reference; the accepted limits and extra materials are illustrative inputs. The examples use explicitly stated measurements or assumptions; they are not instrument standards, tolerance rules or approval of your load.