Archive | Advertise | May 2013

T 841 Withdrawn

Print Print this article | Send to Colleague

The following TAPPI Standard has been withdrawn for technical reasons by a vote of the Standard-Specific Interest Group:

T 841 "Edgewise compressive strength of corrugated fiberboard using the Morris method (short column test)"

The reasons for withdrawal included:

1. The method had an inadequate precision statement.

2. There are few, if any, labs actually doing this ECT test. The idea of restraining the edges with a fixture instead of waxing has actually been captured well in T 839 "{Edgewise compressive strength of corrugated fiberboard using the clamp method (short column test)," and a poll of those attending the April Fiberboard Shipping Container Testing Committee meeting found no one uses T 841 or is aware of any labs who are capable of doing the test.

3. The method uses a single specimen size for all flute sizes, and as indicated in the method, test values are lower as a result. This method is not measuring an inherent compression strength of material as for all B and C flute samples (and possibly some A flute specimens as well). Samples will fail in bending, not compression, because they are too tall relative to their thickness. Given that ECT is used in practice (i.e., in McKee and other models) as an estimate of inherent compression strength, this method fails to meet the general definition of ECT.

Technically withdrawn Standards are no longer available for distribution, except for historical or reference purposes. However, withdrawn Standards may be reinstated by the Standard-Specific Interest Group for that Standard. Any TAPPI members interested in working toward reinstatement of any withdrawn Standards should contact

TAPPI Standards guidelines require that all TAPPI members receive notification of any proposed new Standard or TIPs. This message is being sent to you because you are a TAPPI member; have purchased TIPs or Standards products from TAPPI; or because you have previously expressed interest in this topic.


TAPPI is the leading technical association for the worldwide pulp, paper and converting industry.
15 Technology Parkway South | Norcross, GA 30092 |
1-800-332-8686 (US) | 1-800-446-9431 (Canada) | +1-770-446-1400 (Worldwide)