Tuesday, November 30, 2010

RE: Beam clamps for piping braces

Could try Lindapter. Most clamps fasten to one outstand of a flange, but some of the associated plates and brackets require 4 clamps and fasten to both outstands of the flange. Which would provide more lateral restraint than single clamp at end of rod.
 

Regards

Conrad Harrison

B.Tech (mfg & mech), MIIE, gradTIEAust

mailto:sch.tectonic@bigpond.com

Adelaide

South Australia

 

Beam clamps for piping braces

Does anyone know if B-Line or Unistrut or others makes a clamp that attaches to the bottom flange of a W beam and is tested for lateral loads and can be used to brace piping / ducts / etc?

Re: Seismic design of staircase in California

Rajendran,

Depending on the steel frames lateral resisting system it could be a moment frame, a braced frame, or an inverted pendulum.

Thomas Hunt



From:        Padmanabhan Rajendran <prajendran@ymail.com>
To:        seaint@seaint.org
Date:        11/30/2010 06:34 AM
Subject:        Re: Seismic design of staircase in California




Yes, it is a sort of a stile except that this one is high. It needs to go over a 20' high concrete wall.

Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:


From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 11:16 PM

Rajendran,

You will need to describe your structure a little better.  So far it sounds like a stile if you are going up, over, and down an obstruction.


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 01:41 PM
Subject:        
Re: Seismic design of staircase in California




Tom,

It is a staircase to cross over an obstruction. What will be the applicable component if Table 13.5-1 were to be used?


Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:

From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 7:18 PM

Rajendran,


Are you asking about the overall staircase as a structure or are you asking about a staircase within a structure?  If you are talking about a steel braced frame or moment frame structure with a staircase inside then the overall structure would be likely a non-building structure similar to a building in which case you can use either Table 15.4-1 or Table 12.2-1.  If you just designing the staircase (i.e. stair stringers and attachments) then you would use Table 13.5-1.


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 11:00 AM
Subject:        
Re: Seismic design of staircase in California




Tom,

It is a stand alone structure. If I used Chapter 13 procedure, will it pass through the Permit Agency's scrutiny?

Thanks.


Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:

From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 4:20 PM


Rajendran,


Unless your staircase is part of the overall lateral force resisting system of the building it would probably be more appropriate to consider it a non-structural components and use ASCE 7 Chapter 13 for your seismic design forces (i.e. Fp forces).


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 08:13 AM
Subject:        
Seismic design of staircase in California




I am designing a steel staircase located in South Long Beach, California. It is about 22' tall laid at about 40 deg to horizontal. To estimate seismic loads on the structure, I am considering it as a non-building structure subject to the sections of Chapter 15 of ASCE 7 (2005 edtition). There are 2 tables in this chapter to determine "R" and "Omega 0": Table 15.4-1 for nonbuilding structures similar to buildings and Table 15.4-2 for nonbuilding structures not similar to buildings.  I think the staircase would be classified under Table 15.4-2 as "All other self-suppoting structures, tanks or vessels not covered above or by reference standards that are similar to buildings". Under this classification R = 1.25 and Omega0=2. Is my assumption correct? If not, what will be the accepted method?

Thanks.


Rajendran





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Re: Seismic design of staircase in California

Yes, it is a sort of a stile except that this one is high. It needs to go over a 20' high concrete wall.

Rajendran


--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:

From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 11:16 PM

Rajendran,

You will need to describe your structure a little better.  So far it sounds like a stile if you are going up, over, and down an obstruction.

Thomas Hunt, S.E.
Fluor



From:        Padmanabhan Rajendran <prajendran@ymail.com>
To:        seaint@seaint.org
Date:        11/29/2010 01:41 PM
Subject:        Re: Seismic design of staircase in California




Tom,

It is a staircase to cross over an obstruction. What will be the applicable component if Table 13.5-1 were to be used?

Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:


From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 7:18 PM

Rajendran,

Are you asking about the overall staircase as a structure or are you asking about a staircase within a structure?  If you are talking about a steel braced frame or moment frame structure with a staircase inside then the overall structure would be likely a non-building structure similar to a building in which case you can use either Table 15.4-1 or Table 12.2-1.  If you just designing the staircase (i.e. stair stringers and attachments) then you would use Table 13.5-1.


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 11:00 AM
Subject:        
Re: Seismic design of staircase in California




Tom,

It is a stand alone structure. If I used Chapter 13 procedure, will it pass through the Permit Agency's scrutiny?

Thanks.


Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:

From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 4:20 PM

Rajendran,


Unless your staircase is part of the overall lateral force resisting system of the building it would probably be more appropriate to consider it a non-structural components and use ASCE 7 Chapter 13 for your seismic design forces (i.e. Fp forces).


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 08:13 AM
Subject:        
Seismic design of staircase in California




I am designing a steel staircase located in South Long Beach, California. It is about 22' tall laid at about 40 deg to horizontal. To estimate seismic loads on the structure, I am considering it as a non-building structure subject to the sections of Chapter 15 of ASCE 7 (2005 edtition). There are 2 tables in this chapter to determine "R" and "Omega 0": Table 15.4-1 for nonbuilding structures similar to buildings and Table 15.4-2 for nonbuilding structures not similar to buildings.  I think the staircase would be classified under Table 15.4-2 as "All other self-suppoting structures, tanks or vessels not covered above or by reference standards that are similar to buildings". Under this classification R = 1.25 and Omega0=2. Is my assumption correct? If not, what will be the accepted method?

Thanks.


Rajendran




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Re: written report with equations.

I've Just discovered ! One Note and Word now have an equation solver add-in
!
http://callkathy.amplify.com/2010/08/16/let-onenote-or-word-solve-your-math-equations/


--------- Original Message --------
From: seaint@seaint.org
To: seaint@seaint.org <seaint@seaint.org>
Subject: Re: written report with equations.
Date: 03/09/10 16:05

>
>
> Joe,
>
> If you are using Microsoft Word for
> your written text then look into their &quot;Equation Editor&quot; which
> is sometimes included free but often not installed in the basic setup.
>
> Thomas Hunt, S.E.
> Fluor
>
>
>
>
>
>
>
> &quot;Joseph R. Grill&quot; &lt;vveng@cableone.net&gt;
> 03/09/2010 12:56 PM
> Please respond to seaint
>
>
>
>
> To
> &lt;seaint@seaint.org&gt;
>
>
> cc
>
>
>
> Subject
> written report with equations.
>
>
>
>
>
>
>
>
>
> This may seem a bit basic, but I am hoping
> I can put together a written report which will include type written
equations
> which will show correct notations, roman numerals, superscripts,
subscripts
> etc etc. &nbsp;Just as soon not have to purchase anything. &nbsp;Any
suggestions?
> Thanks,
> Joe Grill
> &nbsp;
> &nbsp;
> ------------------------------------------------------------
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> or entity to which it is addressed and may contain
> proprietary, business-confidential and/or privileged material.
> If you are not the intended recipient of this message you are
> hereby notified that any use, review, retransmission, dissemination,
> distribution, reproduction or any action taken in reliance upon
> this message is prohibited. If you received this in error, please
> contact the sender and delete the material from any computer.
>
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> sender and may not necessarily reflect the views of the company.
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>
>

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Monday, November 29, 2010

Re: Seismic design of staircase in California

Rajendran,

You will need to describe your structure a little better.  So far it sounds like a stile if you are going up, over, and down an obstruction.

Thomas Hunt, S.E.
Fluor



From:        Padmanabhan Rajendran <prajendran@ymail.com>
To:        seaint@seaint.org
Date:        11/29/2010 01:41 PM
Subject:        Re: Seismic design of staircase in California




Tom,

It is a staircase to cross over an obstruction. What will be the applicable component if Table 13.5-1 were to be used?

Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:


From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 7:18 PM

Rajendran,

Are you asking about the overall staircase as a structure or are you asking about a staircase within a structure?  If you are talking about a steel braced frame or moment frame structure with a staircase inside then the overall structure would be likely a non-building structure similar to a building in which case you can use either Table 15.4-1 or Table 12.2-1.  If you just designing the staircase (i.e. stair stringers and attachments) then you would use Table 13.5-1.


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 11:00 AM
Subject:        
Re: Seismic design of staircase in California




Tom,

It is a stand alone structure. If I used Chapter 13 procedure, will it pass through the Permit Agency's scrutiny?

Thanks.


Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:

From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 4:20 PM

Rajendran,


Unless your staircase is part of the overall lateral force resisting system of the building it would probably be more appropriate to consider it a non-structural components and use ASCE 7 Chapter 13 for your seismic design forces (i.e. Fp forces).


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 08:13 AM
Subject:        
Seismic design of staircase in California




I am designing a steel staircase located in South Long Beach, California. It is about 22' tall laid at about 40 deg to horizontal. To estimate seismic loads on the structure, I am considering it as a non-building structure subject to the sections of Chapter 15 of ASCE 7 (2005 edtition). There are 2 tables in this chapter to determine "R" and "Omega 0": Table 15.4-1 for nonbuilding structures similar to buildings and Table 15.4-2 for nonbuilding structures not similar to buildings.  I think the staircase would be classified under Table 15.4-2 as "All other self-suppoting structures, tanks or vessels not covered above or by reference standards that are similar to buildings". Under this classification R = 1.25 and Omega0=2. Is my assumption correct? If not, what will be the accepted method?

Thanks.


Rajendran




------------------------------------------------------------
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hereby notified that any use, review, retransmission, dissemination,
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Re: Seismic design of staircase in California

Tom,

It is a staircase to cross over an obstruction. What will be the applicable component if Table 13.5-1 were to be used?

Rajendran


--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:

From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 7:18 PM

Rajendran,

Are you asking about the overall staircase as a structure or are you asking about a staircase within a structure?  If you are talking about a steel braced frame or moment frame structure with a staircase inside then the overall structure would be likely a non-building structure similar to a building in which case you can use either Table 15.4-1 or Table 12.2-1.  If you just designing the staircase (i.e. stair stringers and attachments) then you would use Table 13.5-1.

Thomas Hunt, S.E.
Fluor



From:        Padmanabhan Rajendran <prajendran@ymail.com>
To:        seaint@seaint.org
Date:        11/29/2010 11:00 AM
Subject:        Re: Seismic design of staircase in California




Tom,

It is a stand alone structure. If I used Chapter 13 procedure, will it pass through the Permit Agency's scrutiny?

Thanks.

Rajendran



--- On Mon, 11/29/10, Tom.Hunt@fluor.com <Tom.Hunt@fluor.com> wrote:


From: Tom.Hunt@fluor.com <Tom.Hunt@fluor.com>
Subject: Re: Seismic design of staircase in California
To: seaint@seaint.org
Date: Monday, November 29, 2010, 4:20 PM

Rajendran,

Unless your staircase is part of the overall lateral force resisting system of the building it would probably be more appropriate to consider it a non-structural components and use ASCE 7 Chapter 13 for your seismic design forces (i.e. Fp forces).


Thomas Hunt, S.E.

Fluor




From:        
Padmanabhan Rajendran <prajendran@ymail.com>
To:        
seaint@seaint.org
Date:        
11/29/2010 08:13 AM
Subject:        
Seismic design of staircase in California




I am designing a steel staircase located in South Long Beach, California. It is about 22' tall laid at about 40 deg to horizontal. To estimate seismic loads on the structure, I am considering it as a non-building structure subject to the sections of Chapter 15 of ASCE 7 (2005 edtition). There are 2 tables in this chapter to determine "R" and "Omega 0": Table 15.4-1 for nonbuilding structures similar to buildings and Table 15.4-2 for nonbuilding structures not similar to buildings.  I think the staircase would be classified under Table 15.4-2 as "All other self-suppoting structures, tanks or vessels not covered above or by reference standards that are similar to buildings". Under this classification R = 1.25 and Omega0=2. Is my assumption correct? If not, what will be the accepted method?

Thanks.


Rajendran



------------------------------------------------------------
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or entity to which it is addressed and may contain
proprietary, business-confidential and/or privileged material.  
If you are not the intended recipient of this message you are
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distribution, reproduction or any action taken in reliance upon
this message is prohibited. If you received this in error, please
contact the sender and delete the material from any computer.  

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------------------------------------------------------------


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