Quality & safety
MIR (Material Inspection Request)
The formal request for materials delivered to site to be inspected and approved against the specification before use. Approval is a condition, not a certificate — material accepted on arrival can still fail on the day it is installed.
This is the part that catches people. Cement ages. Waterproofing membrane degrades in UV. Rebar in ground contact contaminates. An MIR approved in March describes a condition that may no longer exist in July, and the approval record will sit in the file, entirely correct and entirely useless.
Which makes storage a quality control rather than a housekeeping matter, and FIFO on cement a compliance requirement rather than good practice.