# Re: Thank you Neil Moore

• To: seaint(--nospam--at)seaint.org
• Subject: Re: Thank you Neil Moore
• From: Neil Moore <nmoore(--nospam--at)innercite.com>
• Date: Tue, 04 Jul 2000 20:01:32 -0700
Paul and Jorge:

I need an address to send to.

Neil Moore, .S.E.
Enginerio Residente
Asuncion Port Project
(1967-69)

Long time ago.

At 07:18 PM 07/04/2000 -0500, you wrote:
>Neil Moore,
>
>could send us we thanks you very much.
>
>Thank you very much.
>Engs: Paul Gortaire and Jorge Ortega.
>
>
>
>> ----------
>> De: 	Neil Moore[SMTP:nmoore(--nospam--at)innercite.com]
>> Enviado el: 	Martes 4 de Julio de 2000 6:26 PM
>> Para: 	GORTAIRE ERAZO PAUL ALFONSO
>> Asunto: 	RE: Accidental Torsion
>>
>> Paul and Jorge:
>>
>> Assuming a one-story building with a rigid diaphragm, concrete  or
>> concrete
>> block walls:
>>
>> 1.	Determine the Center of Gravity of the building in one direction.
>> 2.	Determine the Center of Rigidity of the building in the same
>> direction;
>> this is done by determining the rigidity of each shear wall.
>> 3.	The difference between the center of gravity and the center of
>> rigidity
>> is the eccentricity of the building. (in feet or meters).  To this add 5%
>> of the width of the building.
>> 4.	Multiply this distance times your seismic force.  This is the
>> torsional
>> moment.
>> 5.	Distribute the seismic force to each shear wall per it's rigidity.
>> 6.	Distribute the torsional moment to the various shear walls.
>> 7.	Add or subtract the two together and that is your seismic force to
>> each
>> wall.
>>
>> Repeat this in the other direction.
>>
>> I may have some old notes that I can send you, as this is fairly basic
>> seismic analysis.  Please respond off the listserver.
>>
>> Neil Moore, S.E.
>>
>> At 06:05 PM 07/04/2000 -0500, you wrote:
>> >> Neil Moore,
>> >>
>> >Thank you for your help. We are consulting the manner of evaluate the
>> >accidental torsion in structures. We are from Ecuador and we can't access
>> in
>> >the UBC, if you could help us of other manner we will thank you very
>> much.
>> >
>> >Thank you very much.
>> >
>> >Eng. Paul Gortaire & Jorge Ortega
>> >
>> >> ----------
>> >> De: 	Neil Moore[SMTP:nmoore(--nospam--at)innercite.com]
>> >> Responder a: 	seaint(--nospam--at)seaint.org
>> >> Enviado el: 	Lunes 3 de Julio de 2000 10:36 PM
>> >> Para: 	seaint(--nospam--at)seaint.org
>> >> Asunto: 	Re: Accidental Torsion
>> >>
>> >> Paul and Jorge:
>> >>
>> >> Refer to sections 1630.6 and 1630.7 of the 1997 UBC.  Note that in
>> 1630.7,
>> >> the 5% accidential torsion is in addition to your calculated torsion.
>> >> Also, refer to sections C105.6 and C105.7 of the 1999 Blue Book
>> >> (Recommended Lateral Force Requirements and Commentary)
>> >>
>> >> Neil Moore, S.E.
>> >>
>> >>
>> >> At 07:38 PM 07/03/2000 -0500, you wrote:
>> >> >We would like to know how could calculate "Accidental Torsion" in
>> >> >structures.
>> >> >
>> >> >Very truly of yours,
>> >> >Paul Gortaire & Jorge Ortega
>> >> >
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>>
>
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