Reduced Southern Pine Design Values and their effect on Glulam
For those who are familiar with designing wood members, you may also be aware that the allowable design values for dimension and sawn Southern Pine timber have been reduced. Tests have indicated that the juvenile wood, used in todays markets, have lower allowable strength values than those that have been published before.
As a designer, it is important to know that these reductions are not applicable to the design of Glued Laminated Timber members. Our laminator, ALAMCO Wood Products have provided us with the following from the APA-AITC white paper on Glue Lam lumber grading (select link below)