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Re: Steel Building Bracing

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Right, Table 16-N. I'm in the process of getting new eyewear
prescriptions. Sorry 'bout that.

Regards,
Bill Allen
-----Original Message-----
From: Horning, Dick/CVO <dhorning(--nospam--at)CH2M.com>
To: 'seaoc(--nospam--at)seaoc.org' <seaoc(--nospam--at)seaoc.org>
Date: Wednesday, October 29, 1997 11:18 AM
Subject: RE: Steel Building Bracing


>Good point, Bill, but I think you mean Table 16-N.
>
>> ----------
>> From: Bill Allen[SMTP:BAllenSE(--nospam--at)mail-gw.pacbell.net]
>> Sent: Wednesday, October 29, 1997 9:38 AM
>> To: seaoc(--nospam--at)seaoc.org
>> Subject: Re: Steel Building Bracing
>> 
>> How about, if one or two story per Section 2211.8.5, the tension only
>> members are designed for 3Rw/8?
>> 
>> Also, per Table 16-H, what about Item 1.3 "Light steel-framed bearing
>> walls
>> with tension-only bracing" (Rw=4)?


>> 
>> Regards,
>> Bill Allen
>> -----Original Message-----
>> From: Horning, Dick/CVO <dhorning(--nospam--at)CH2M.com>
>> To: 'seaoc(--nospam--at)seaoc.org' <seaoc(--nospam--at)seaoc.org>
>> Date: Wednesday, October 29, 1997 9:13 AM
>> Subject: RE: Steel Building Bracing
>> 
>> 
>> >Tom, where are you seeing a TENSION-ONLY provision in the UBC?  For
>> >Zones 3/4, the 1994 and 1997 UBC have stringent limits on slenderness
>> >ratios of braces and require compression braces to carry 70% of story
>> >shear.  This has eliminated use of rod x-bracing and virtually forced
>> >use of tubes.  If you have found a way around these provisions, I'm
>> all
>> >ears (figuratively).
>> >
>> >> ----------
>> >> From: Thomas Chiu[SMTP:Tomchiu(--nospam--at)worldnet.att.net]
>> >> Sent: Tuesday, October 28, 1997 9:46 PM
>> >> To: seaoc(--nospam--at)seaoc.org
>> >> Subject: Re: Steel Building Bracing
>> >>
>> >> Chris Towne wrote:
>> >> >
>> >> > What factor of safety is prudent on design of steel cable for
>> >> tension
>> >> > x-framing?
>> >> >
>> >> > Chris Towne, E.I.T.
>> >> >
>> >> >
>> >>
>> >> Don't forget the 3 Rw/8 X the UBC seismic force in your design, I
>> >> don't
>> >> have the UBC Code section handy but it should be under TENSION-ONLY
>> >> braced frame section. I had reviewed some engineer's design that
>> did
>> >> not
>> >> check for 3 Rw/8 x UBC forces and he ended up revising his details
>> >> that
>> >> had gone for bid and cost the owner an arm and leg for the
>> revision.
>> >> The reason being that they were using some old computer program
>> that
>> >> never got updated for that section of the Code --- another unproper
>> >> use
>> >> of computer program.
>> >>
>> >>
>> >>
>> >
>> >
>> >
>> 
>> 
>> 
>> 
>
>
>