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RE: Moments in wood structures

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Title: Moments in wood structures



You could calculate moment capacities based on connector shear values.  I don’t believe Sampson publishes moment capacity values.  I would orient the vertical straps at the base at right angles to the vertical straps at the cap, and figure the straps as transferring vertical shear into the posts, rather than figuring the vertical straps as acting in torsion.  It would probably be easier to figure a moment capacity using the CBQ base and CCQ cap since the SDS connectors on opposite sides of the wood member act independently; it’s may not be clear how to figure shear capacities and resultant moment capacities for a bolt for which the force is upward on one side of the wood member and downward on the other side.   


Nels Roselund, SE

South San Gabriel, CA


From: Chance, Acie [mailto:AChance(--nospam--at)]
Sent: Monday, May 08, 2006 1:41 PM
To: seaint(--nospam--at)
Subject: Moments in wood structures



     A city engineer told a client that he would sign off on a patio with Simpson CB at the bottom and Simpson CC at the top of six wood columns.  Patio is 20' X 40' with two rows of three columns. Wood beams connect the six columns.   As there are no shear walls or braces at least one of these connections, top or bottom must be moment resistant.  I have not been able to find any EER or other data showing these connections will take moment.  If any one know of any information this hardware making moment connections in wood share it with me.

Acie P. Chance