Methodology
Formula & assumptions
Wall-top run
measured compatible linear run
Keep different cap systems in separate groups.
Base cap count
wall run ÷ installed cap module length, rounded up
Module length is a selected product input.
Purchase target
base units × (1 + allowance), rounded up
Cutting/breakage reserve stays visible.
Packages
target units ÷ units per package, rounded up
Use the actual supplier package or pallet grouping.