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RE: Lumber Moment Frame Connection

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I am not personally aware of approved lumber moment frame connections in California.  However, there are approved prefabricated and preengineered steel moment frames with over 100 standard sizes that are available from Hardy Frames, Inc that can easily handle your lateral load.  Check out their website at or call them at 800-754-3030.

Henry A. Gallart, S.E.


From: Jim Chatterley PE [mailto:cfs2000(--nospam--at)]
Sent: Wednesday, February 28, 2007 5:45 PM
To: Seaint
Subject: Lumber Moment Frame Connection


    Last week a county plan check engineer (Southern California) refused to consider a connection detail using custom steel "T" straps 3/16" thick on both sides - connecting a 6 x 12 beam to a 6 x 6 lumber column ( 2 each 5/8" dia machine bolts in each leg of the "T" Straps).  The lateral force on the simple shed roof 8 foot high patio cover was 2,240 foot- pounds.  

    The plan checker insisted that unless the client would be willing to use bolted lumber "Knee Braces" they would not issue a building permit.  Stating that there is no code approved heavy timber moment frame connection. 

    Your comments please.


Jim L. Chatterley PE

Composite Framing Systems, Inc.

2723 Currier Ave., Simi Valley, California, 93065

805-520-3666   Fax 805-583-1434