TAPPI T 826 om-21:2021 Edition

This method describes a procedure for determining the compressive resistance of containerboard. This method is intended for containerboard having a span-to-thickness ratio of 5 or less. This is often equivalent to a grammage of at least 100 g/m² (20.5 lb/1000 ft² ) (1) and not much over 439 g/m² (90 lb/msf²).