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RE: Southern Pine / Pressure Treated

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IBC section 2303.4.11 answers your first question, and 2303.1.8.2 answers your second question.  PT wood (or any wood for that matter) should only be above 19% MC if it will be allowed to dry on site during construction before being covered up in the wall.  I think there are some technical requirements for what “field drying” really entails. 


~~ Eli Grassley


-----Original Message-----
From: Sharon Robertson [mailto:sharon(--nospam--at)]
Sent: Tuesday, March 08, 2005 3:53 PM
To: seaint(--nospam--at)
Subject: Southern Pine / Pressure Treated




I am working on a project in Texas using Southern Pine.  The specifications note that all lumber except pressure-treated shall contain not more than 19% moisture content.  My questions are:

·         Does Southern Pine require pressure treatment for uses like ledgers bolted to concrete or masonry, sole plates, etc.?

·         If yes, why do you suppose it would be exempt from the stated 19% moisture content limit? 


Sharon Robertson, PE
Arcon Engineers 
5625 Ruffin Road, Suite 130 
San Diego, CA  92123
858/503-7858 fax

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