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RE: Chicago Bldg code - live load reduction allowance? (was Bldg Codes Online?

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Thanks John. Appreciate the time and effort (didn't realise the amount of text would be that much).

Thanks again

John

>From: "Daley, John"
>To: "'seaint(--nospam--at)seaint.org'" , "'jazzyjc23(--nospam--at)hotmail.com'"
>Subject: RE: Chicago Bldg code - live load reduction allowance? (was Bldg Codes Online?
>Date: Tue, 8 Oct 2002 08:16:00 -0500
>
>reduction in live loads
>16(13-52-210) Permitted reduction in live loads shall comply with the
>provisions of subsections (a), (b), and (c) of this section.
>
>(a) Permitted Reduction in Floor Construction:
>Beams, girders and trusses shall be designed to carry not less than the
>following percentage of the live floor loads established in Section
>16(13-52-090) or based on the tributary floor area and influence area
>carried by the members.
>
>1. For live loads of 100 pounds per square foot or less:
>area influence area percentage of load
><200 400 100
><300 600 86
><400 800 78
><600 1200 68
><800 1600 63
> >800 >1600 60
>
>2. linear interpolation between tabulated percentage of live loads is
>permitted.
>3. for live loads that exceed 100 psf, no reduction is permitted.
>4. no reduction is allowed for areas to be occupied as places of public
>assembly, garages or parking facilities, on way slabs or joists.
>
>(b) permitted reductions in bearing walls, columns, piers and other members
>supporting more than one floor shall be based on the trib. area and
>influence area carried by the member.
>
>1. For live loads of 100 psf or less:
>
>area influence area percentage of load
><200 800 100
><300 1200 68
><400 1600 63
><600 2400 56
><800 3200 52
>900+ 3600+ 50
>
>2. linear interpolation between tabulated percentage of live loads is
>permitted.
>3. no reduction is allowed for areas to be occupied as places of public
>assembly, garages or parking facilities, on way slabs or joists.
>4. for live loads that exceed 100 psf, and in garages and parking facilities
>for passenger vehicles only, members supporting mor than one floor may be
>designed to carry not less than 80% of the live loads est. in Sect.
>16(13-52-090)
>
>Hope this helps,
>
>John Daley
>
>-----Original Message-----
>From: john chanson [mailto:jazzyjc23(--nospam--at)hotmail.com]
>Sent: Monday, October 07, 2002 6:37 PM
>To: seaint(--nospam--at)seaint.org
>Subject: Re: Chicago Bldg code - live load reduction allowance? (was Bldg
>Codes Online?
>
>
>
>A slight change of topic here ............ can anyone out there provide me
>with a quick (text exert) description of the live load reduction text and
>formulae from the Chicago bldg code? I have been directed by the Chicago
>bldg official to their code (Chap 13, page 52, Volume 1 I am told) but don't
>have the luxury of time waiting for a mailed copy to arrive.
>
>Thanks
>
>JC
>
>
>
> >From: HBAP(--nospam--at)aol.com
> >Reply-To:
> >To: seaint(--nospam--at)seaint.org
> >Subject: Building Codes Online?
> >Date: Sun, 6 Oct 2002 13:17:35 EDT
> >
> >Anyone notice the "News Brief" in the September issue of Building Design &
> >Construction under the title "Court decision threatens code developers'
> >copyrights"? It reports (see page 11) that Texas retiree Peter Veeck posted
>
> >portions of their locally adopted building code on his Website. Predictably
>
> >it promptly went to court, with SBCCI, NFPA, ANSI, and others jumping
> >(probably frantically) into the fray. The news brief stated that the Fifth
> >Circuit Court of Appeals upheld a lower courts ruling in Veeck's favor that
>
> >once a copyrighted code was adopted by a governmental jurisdiction is was
>in
> >public domain and therefore not subject to copyright protection. You can
>read
> >an excerpt at www.bdcmag.com under "Legal Briefs". However, go to Google
>and
> >type in "Peter Veeck" and numerous references would indicate that he DID
>NOT
> >prevail. Having access to building codes online would obviously devastate
> >revenue from code publishers, and be vigorously resisted, but be a boon for
>
> >the rest of us, and is probably inevitable given the likes of Veeck..
> >
> >Hugh Brooks, SE
> >Retain Pro Software
> >
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