From the plan to the order volume
The calculation starts with the area actually covered. It multiplies that area by the entered depth and then applies the selected allowance. A circle, L shape or known area is used directly after you apply it in the shape editor.
Aggregate size and bulk density have different roles
Aggregate size describes the grading, such as 8/12 mm. Bulk density converts cubic metres into kilograms or tonnes. Because it varies with the stone, moisture and product, confirm your supplier’s figure before using the weight result.
Prefilled depths and bulk densities are input examples, not specifications. Base, compaction and drainage requirements depend on the project and selected system.