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Re: WOOD MOMENT FRAMES[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaoc(--nospam--at)seaoc.org>
- Subject: Re: WOOD MOMENT FRAMES
- From: "Bill Allen, S.E." <billallen(--nospam--at)earthlink.net>
- Date: Fri, 10 Apr 1998 14:24:17 -0700
I guess I'm the only one who believes that a structure designed using "flagpoles" needs to use an Rw=3. Or maybe it's just that my head's already into 1997 UBC. I recall that I have seen this provision somewhere referred to as "inverted pendulums" (maybe SEAOSC blue book?). Regards, Bill Allen -----Original Message----- From: Dennis S. Wish <wish(--nospam--at)cwia.com> To: seaoc(--nospam--at)seaoc.org <seaoc(--nospam--at)seaoc.org> Date: Friday, April 10, 1998 2:00 PM Subject: RE: WOOD MOMENT FRAMES >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 >will be a slow extinction from apathy, indifference, and undernourishment." >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. > > > > > >
- Re: WOOD MOMENT FRAMES
- From: Bill Cain, S.E.
- Re: WOOD MOMENT FRAMES
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