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RE: WOOD MOMENT FRAMES

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I agree with the information you received from Charles Greenslaw - you
really can not create the rigidity and stiffness you need at the connection
of wood to wood.
The closes you can come is to create two flag pole conditions by embedding
the wood into a post hole foundation (similar to a fence post design)
however, be cautious since even redwood will begin to rot out after
sufficient time.
The first consideration is that the seismic zone makes very little
difference here since wind will most likely govern. You still need to
distribute wind loads proportionately.
Depending upon the magnitude of your reaction at each post, and the diameter
or depth of the steel column (assuming a Pipe - standard, extra strong or
double extra strong - or TS tube steel section) you can use either a grade
beam or embedded post foundation. If the steel section is small enough, I
would suggest cladding wood veneer with stud pins to the outside face of
steel and essentially creating what appears to be a wood column.
This will give you a connection that should last the test of time and
provide sufficient restraint for your wind loads.
Regards
Dennis S. Wish PE
La Quinta, California
wish(--nospam--at)cwia.com

ICQ# 6110557
http://wwp.mirabilis.com/6110557

"The death of democracy is not likely to be an assassination from ambush. It
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Robert Hutchins

-----Original Message-----
From: RDAHLMANN [mailto:RDAHLMANN(--nospam--at)aol.com]
Sent: Thursday, April 09, 1998 9:04 PM
To: seaoc(--nospam--at)seaoc.org
Subject: WOOD MOMENT FRAMES


I HAVE A CLIENT WHO WANTS TO USE A WOOD BEAM IN CONJUNCTION WITH STEEL
COLUMNS
TO CREATE A MOMENT FRAME. THIS IS RESIDENTIAL CONSTRUCTION IS SEISMIC ZONE
2.
I AM VERY HESITANT DUE TO:
1. THE ENORMOUS AMOUNT OF BOLTS REQUIRED AT EACH END
2. THE IMPRACTICALITY OF EXPECTING RESIDENTIAL CARPENTERS TO GET THE BOLT
HOLES EXACTLY RIGHT (SINCE THE BOLT HOLE WILL NEED TO BE SNUG WITH THE BOLTS
IN ORDER TO MAINTAIN A RIGID CONNECTION)
3. THE POSSIBLE FUTURE ELONGATION OF THE BOLT HOLES DUE TO CONTINUES MOTION
OVER THE YEARS.

IF ANYONE HAS ANY SUGGESTIONS, THEY WOULD BE GREATLY APPRECIATED.

RICHARD DAHLMANN, P.E.