Friday, October 3, 2008

Steel Deck Cantilevers

 

    Can anyone shed some light on the following note in SDI roof deck specs: "No permanent suspended loads are to be supported by the steel deck"? This note is in reference to a table showing the maximum recommended cantilevers for various types of deck. (See page 27 of this http://www.newmill.com/pdf/DeckDesignGuide.pdf deck catalog.) A section of the specs gives the loads that the cantilever is supposed to be able to support. Why shouldn't deck cantilevers support permanent loads? Should deck cantilevers only support light loads? What would be an acceptable load on a cantilever?
    I am looking at a case where 3" deck is cantilevering 3'-0". This is several inches shy of the recommended maximum cantilever length. The dead load the deck would support would be about 10 psf, with snow load under 35 psf.

Wesley C. Werner


 

RE: Moment Frame Lateral Restraint/Location

I have 2-storey frames that I am using for an upgrade to an existing
building. They are essentially just lateral restraint systems with little
gravity load.

Because they have to be under the existing floor system, they are connected
to the floor and roof only by a short shear/pony wall, approx 3' high, with
no "top flange restraint" per se. I have decided that the frames are
effectively not restrained out of plane and therefore need to be
tied/located so that they do not try to twist out of plane under lateral
displacement. The frames have been designed for support only at those
locations.

1st floor level at 11ft and roof at 24ft approx

They are attached to the roof/floor at the centre of the building but I need
to estimate the connection required at the exterior walls. I have a splice
location 4' above the 1st story frame member and intend to "locate" at the
splice, floor and roof levels.

What's a good method to estimate the restraining loads? Ignore gravity load
so 4% etc of compression load is non-existent ... unless I use the
compression flange axial force due to bending ... ?

Thor A. Tandy P.Eng, C.Eng, Struct.Eng, MIStructE
Victoria, BC
Canada

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CMU sealing- architectural question

Is it typical to chemically seal the face of split face block (obviously exposed) in the Midwestern USA (Iowa to be exact)?

 

Is this wall section typical for masonry:

Split face CMU

2-1/2” mtl stud with fiberglass insulation in between, paper side towards interior

Layer of plastic moisture barrier over top of that, followed by gyp board

 

Thanks,

Andrew Kester, PE

Orlando, FL

 

 

 

 

RE: ACI codes

Please, oh please, let it be beer-thirty already.

 

Doug Mayer, SE

 

From: Andrew Kester, P.E. [mailto:akester@cfl.rr.com]
Sent: Friday, October 03, 2008 12:52 PM
To: seaint@seaint.org
Subject: re: ACI codes

 

Wow Scott, EN FUEGO! But I know Scott puts a lot of blood, sweat, and tears into ACI (or did at one time) so I understand his frustration with a “lack of understanding” of the process. I also understand as an engineer when you purchase a spec or text you expect a pretty polished product. My personal attitude is if there are no numbers changing the errata goes in the closes circular file, usually balled up with a countdown to the buzzer…

 

But I appreciate your Thomas Payne style of sarcasm and keeping that voice throughout your whole email, that’s my boy Blue!

 

Alright, is it Sunset Wheat time yet or what?

 

Andrew Kester, PE

Orlando, FL

 

 

 

re: ACI codes

Wow Scott, EN FUEGO! But I know Scott puts a lot of blood, sweat, and tears into ACI (or did at one time) so I understand his frustration with a “lack of understanding” of the process. I also understand as an engineer when you purchase a spec or text you expect a pretty polished product. My personal attitude is if there are no numbers changing the errata goes in the closes circular file, usually balled up with a countdown to the buzzer…

 

But I appreciate your Thomas Payne style of sarcasm and keeping that voice throughout your whole email, that’s my boy Blue!

 

Alright, is it Sunset Wheat time yet or what?

 

Andrew Kester, PE

Orlando, FL

 

 

 

RE: Bad Codes

Return Receipt

Your RE: Bad Codes
document:

was Tom Hunt/AV/FD/FluorCorp
received
by:

at: 10/03/2008 06:52:11 PDT


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RE: Bad Codes

I just went to the ACI 318-08 seminar yesterday, and they were handing out ACI 318-08 second edition with a short list of errata.
 

Wesley C. Werner


 


From: Garner, Robert [mailto:rgarner@moffattnichol.com]
Sent: Thursday, October 02, 2008 2:28 PM
To: seaint@seaint.org
Subject: RE: Bad Codes

Thank you for your reply, Daniel,

 

For reference, the ACI 318-08 that I received was the First Printing, January 2008.  The errata I received was listed as First Printing and consisted of 7 pages.

 

Interesting that you received the Second Printing of ACI 318?

 

Which printing have others received?

 

I am pleased to note, however, that ACI printed the following on the top of the errata, "American Concrete Institute, Now offering more value to members".

 

 

Robert (Bob) Garner

 


From: Daniel Popp [mailto:drp181@yahoo.com]
Sent: Thursday, October 02, 2008 10:25 AM
To: seaint@seaint.org
Subject: Re: Bad Codes

 

Robert,

I had the same experience -- opening the 318-08 package and being greeted by a nine-page errata list.  I immediately sent it back to ACI with a polite letter explaining that as a practicing engineer, I did not have time to incorporate this excessive number of errata and that I would like a second printing when available.  After one reminder five months later, ACI did send me a second printing, which has only a few errata, none of which affect any design provisions (e.g. typos in definitions or commentary).

In my letter, I suggested that they not sell the remaining first printings, but judging from your recent experience, it appears that they might have.  AISC had the same situation with the 2005 Seismic Provisions, but they issued a recall and replaced all of the faulty versions at no charge.

Best regards,
Daniel Popp, S.E.

 

----- Original Message ----
From: "Garner, Robert" <rgarner@moffattnichol.com>
To: seaint@seaint.org
Sent: Thursday, October 2, 2008 4:35:08 AM
Subject: Bad Codes

I just purchased the ACI 318-08 Concrete Code.  My wife called me at work and said I had a package waiting for me.  I love getting packages.  I knew it was the new Concrete Code because I had just ordered it.  So I looked forward to coming home to break into that book and see the progress our "cement buddies" had in making the Code a much improved document, especially our own dear Appendix D, which has succeeded in creating a whole new structural discipline of engineers that specialize exclusively in the design of CONCRETE ANCHORS (caps mine to honor a subject that ACI has seen fit to make as sophisticated as the wind provisions of ASCE.)  What was the first thing I found in the package?  Placed on top of the Code book so that it stood out proudly as if claiming, "Look at me!  I am very Important!"  Yep, Code Errata!  A brand new code that isn't even accepted by code bodies and hasn't even been purchased by most practicing engineers, and there are four pages of ERRORS, whoops, excuse me, Errata.  Can't anybody get a code book published without errors?  Errata?  B.S., these are errors.  I don't care if they are the publishers' proof reader's errors or just stupidity in writing these books.  When I do structural calculations, I don't do this kind of careless work.  I submit my calcs to the City then I routinely follow up with errata?  I don't think so.  Everyone makes mistakes but the codes make them routinely and treat them as if they are just another facet of the code. 

 

As a Structural Engineer licensed in the four western states, I find the constant necessity of correcting codes with constant errata totally unacceptable.

 

 

Robert Garner, S.E.

 

R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

Fax.: (619) 220-6055

e-mail: rgarner@moffattnichol.com

 

Re: Bad Codes

I prefer Wizard because to everybody else it may as well be magic.

Regards
Paul
--
Paul Ransom, P.Eng.
ph 905 639-9628
cell 905 802-3707
fax 905 639-3866
ad026@hwcn.org

> From: "Michel Blangy" <mblangy@satco-inc.com>

> I've been calling myself a Structiste.


> From: Daryl Richardson [mailto:h.d.richardson@shaw.ca]

> Casey,
>
> The "building facility maintenance operator" can be prosecuted for
> using the term "engineer"; the "locomotive operator" can not because,
> unfortunately, their people invented the term before ours did.
>
> Regards,
>
> H. Daryl Richardson


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Re: Bad Codes

Maybe down there, but up here the self-governing professions will go
after somebody at the drop of a hat to protect their turf.
Gary

ASLCSE@aol.com wrote:
> In a message dated 10/2/2008 9:15:16 AM Pacific Daylight Time,
> h.d.richardson@shaw.ca writes:
>
> The "building facility maintenance operator" can be
> prosecuted for using the term "engineer"; the "locomotive
> operator" can not because, unfortunately, their people invented
> the term before ours did.
>
>
> I don't think he can be prosecuted for using the title ENGINEER
> (without a branch)
> My 2 cents worth
>
> Antonio S. "Tony" Luisoni
> Consulting SE
>
>
>
> ------------------------------------------------------------------------
> Looking for simple solutions to your real-life financial challenges?
> Check out WalletPop for the latest news and information, tips and
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Thursday, October 2, 2008

RE: Seismic Charges

There are methods of calculating and monitoring ground shock due to pulse loads from explosives or other sources.  Among other projects of this type, I provided a peer review for the vulnerability of specific facilities for the New Haven Coliseum implosion project in 2006.  The hand calculation methods and limits are from various publications by the Bureau of Mines. 
 
The analysis for the Coliseum was performed by Weidlinger Assoc.  They did an excellent job and the ground shock was within limits.  Weidlinger uses a proprietary program called Flex.  Some other excellent resources would be L3 Titan, and Dr. Sam Kiger at University of Missouri - Columbia. 
 
It is best to do a lot of homework and get your predictions verified with someone with a lot of experience.  Oddly, the standard is to look at velocities as opposed to accelerations. 

A good starting point would be: Report of Investigations 8507, Structure Response and Damage

Produced by Ground Vibration From Surface Mine Blasting.  The best resources are with the DoD. 


Regards,
Harold Sprague




From: seaint04@lewisengineering.com
To: seaint@seaint.org
Subject: Seismic Charges
Date: Wed, 1 Oct 2008 21:27:50 -0500


I was asked a question today that I haven't seen addressed before.  A client told us they oil and gas industry around his plant was going to be setting off seismic charges for exploration.  The plant in located in Louisiana.  He wanted to know how it might affect his facilities.  We asked him to find out where the charges will be set and what size charge they will be, the energy released.   I'm not sure how I would evaluate the affect on the building.  Obviously we don't want to set a charge off near a building.  Are there any specific items we should be considering when responding to their questions?  I thinking this may be more of a geotechnical question then a structural question.   Is there any method of converting explosive underground charges into something like a seismic event on a building?

 

Thanks for your help.

 

Rich

 

 

 



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Re: Geotech contractors


Rajendran,

You might try Fugro Middle East (FME) or Arab Center for Engineering Studies (ACES).

Thomas Hunt, S.E.
Fluor



Padmanabhan Rajendran <prajendran@ymail.com>
10/02/2008 03:20 PM
Please respond to seaint
To
seaint@seaint.org
cc
Subject
Geotech contractors





List,

I am looking for geotech contractors for a potential project in the middle east. It is an on shore project. The contractors could be from the USA or their subsidiaries in the middle east. Can any of you help? Thanks.

Rajendran


------------------------------------------------------------ The information transmitted is intended only for the person  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.    Any views expressed in this message are those of the individual  sender and may not necessarily reflect the views of the company.   ------------------------------------------------------------ 

Geotech contractors

List,

I am looking for geotech contractors for a potential project in the middle east. It is an on shore project. The contractors could be from the USA or their subsidiaries in the middle east. Can any of you help? Thanks.

Rajendran

Re: Citing Publications In Your Technical Writing

On Oct 2, 2008, at 3:02 PM, bill@polhemus.cc wrote:

> If you do any technical writing such as specifications, reports,
> etc., where you have occasion to cite other references such as
> design codes and standards, ASTM specs, etc., what rules do you use
> to format the citations?

I use the same rules I see in technical reports or text books. I've
also used _Elements of Style_ by Strunk and White, except when I
can't put my hands on it right away which is usually. At the same
time I don't there are any hard and fast rules for this like those
forced on you when you did term papers. The important thing is to
make sure there's enough information for someone to recover the
edition you're citing. The document number or ISBN just by itself
will usually be enough, but I usually put in all the rest. I've never
been called on it.

Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw@skypoint.com | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania
1864)
http://www.skypoint.com/members/chrisw/

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Re: Citing Publications In Your Technical Writing

Ask Joe Biden

On Thu, Oct 2, 2008 at 1:02 PM, <bill@polhemus.cc> wrote:

This has actually come up before with me, but I've never thought to ask.

If you do any technical writing such as specifications, reports, etc., where you have occasion to cite other references such as design codes and standards, ASTM specs, etc., what rules do you use to format the citations?

The problem I've had in the past is that the formal citation authorities such as the Modern Language Assocation (MLA) and the American Psychological Association (APA) address primarily scholarly works, specifically in the humanities and "soft sciences." I can never find quite the proper classification for things like ASCE 7 or AISC Manual of Steel Construction in the style guides for MLA or APA.

I realize it's a minor problem - and I've even looked at what the standards like AISC have done in their bibliographies - but I just can't seem to find the correct formula for this.

Any thoughts?


Re: Bad Codes

I was counting down till the detonation...

While I don't disagree with Scott and his knowledge of code development, the great majority of us on this SEAINT list are designers.  All we ask of code-issuing peoples is that someone clicks "spell-check" and proof-reads what goes out and initially comes back from the printers...

just my $0.02...

On Thu, Oct 2, 2008 at 12:43 PM, Scott Maxwell <smaxwell@umich.edu> wrote:
Wow!  Boy, must I be dense.  I must thank you for providing such a clear and completely parallel example of submitting calculations to a City that gives me a better understanding of the ACI 318 creation and printing process.
 
Ignoring for the moment that ACI 318 is comprised of a bunch dumbass engineers, not Perfect Engineers like you (BTW, that reminds me that I should write to my State legislature to see that we change the Michigan PE Act to acknowledge that there is another type of PEs out there, aka Perfect Engineers...after all, we would not want people to get confused), I honestly cannot see how I missed it before.  Obviously, the process of writing, printing, and shipping ACI 318 to you is just like you preparing calculations for a project and submitting them to a city.
 
Being the dumbass that I am, I mistakenly thought that ACI 318 was prepared by a large group of individuals working part-time on it over a period of years who finished their work about a year ago.  I then made the error of believing that they would then print probably thousands of copies back in late 2007 or early 2008 so that it would be ready to submit to the IBC for review and final adoption in to the 2009 IBC code (I thought I had heard somewhere that ICC requires full, final print copies for consideration for adoption into their codes and those print copies must be ready by their hearings, which are usually in Feb/Mar of the adoption year).  This of course could not be right as it would then mean that those printed codes would sit around almost a 9 months with potentailly thousands of people reading through them finding just about every little error (such as typos, mistakes, misprints, and other more serious mistakes) prior to them shipping a copy to you.
 
But, you are right.  I was mistaken.  ACI 318 obviously JUST finished their work a couple weeks, maybe at most a couple months, ago and ACI just got it in print shape and printed of a copy just for you, just like you would finish up calculations a few weeks or so (or less) prior to sending them to the City.  And since ACI 318 and ACI staff as so inept at writting and type-setting the document, they still managed to find 4 pages worth errors in that the day or so it took them to get it ready to ship, which is impressive considering that like your calculations, they likely only had maybe a half dozen to a dozen or so pair of eyes pouring through the copy they just printed for you so that they could make the errata for you.
 
Thanks for pointing out what is clearing a completely parallel example.  I am so stupid that I would not have otherwise spotted it.
 
Oh, I have to thank you for pointing out the way to becoming a Perfect Engineer.  I never realized that in order to be a Perfect Engineer one had to be licensed as a Structural Engineer in four Western states.  Now, I do have some questions about that, however.  Do you have to be licensed as a Structural Engineer in four particular Western states or will any four Western states do?  If it must be four particular states, which ones are they?  And how do you define Western states?  West of the Mississippi?  West of the Rockies?  And when you say licensed as a Structural Engineer, do you really mean that you have to have an SE license or will particing structural engineering with a PE license (that is Professional Engineer license, of course, not a Perfect Engineer license...after all, from what I am understanding from you, the Perfect Engineer license is more than just the plain ol' PE license) do (after all, not all states have SE licenses)?  And while it is obviously the engineers from Eastern states are clearly inferioir, does being licensed in Eastern states get you some credit at all towards being a Perfect Engineer?  Maybe being licensed in 20 Eastern states being equivalent to being licensed in one Western state?  I look forward for the answers...after all, we all should strive to be a Perfect Engineer like you.
 
Regards,
 
Scott
Adrian, MI
-----Original Message-----
From: Garner, Robert [mailto:rgarner@moffattnichol.com]
Sent: Thursday, October 02, 2008 10:35 AM
To: seaint@seaint.org
Subject: Bad Codes

I just purchased the ACI 318-08 Concrete Code.  My wife called me at work and said I had a package waiting for me.  I love getting packages.  I knew it was the new Concrete Code because I had just ordered it.  So I looked forward to coming home to break into that book and see the progress our "cement buddies" had in making the Code a much improved document, especially our own dear Appendix D, which has succeeded in creating a whole new structural discipline of engineers that specialize exclusively in the design of CONCRETE ANCHORS (caps mine to honor a subject that ACI has seen fit to make as sophisticated as the wind provisions of ASCE.)  What was the first thing I found in the package?  Placed on top of the Code book so that it stood out proudly as if claiming, "Look at me!  I am very Important!"  Yep, Code Errata!  A brand new code that isn't even accepted by code bodies and hasn't even been purchased by most practicing engineers, and there are four pages of ERRORS, whoops, excuse me, Errata.  Can't anybody get a code book published without errors?  Errata?  B.S., these are errors.  I don't care if they are the publishers' proof reader's errors or just stupidity in writing these books.  When I do structural calculations, I don't do this kind of careless work.  I submit my calcs to the City then I routinely follow up with errata?  I don't think so.  Everyone makes mistakes but the codes make them routinely and treat them as if they are just another facet of the code. 

 

As a Structural Engineer licensed in the four western states, I find the constant necessity of correcting codes with constant errata totally unacceptable.

 

 

Robert Garner, S.E.

 

R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

Fax.: (619) 220-6055

e-mail: rgarner@moffattnichol.com

 




--
David Topete, SE

RE: Citing Publications In Your Technical Writing

Many journals, associations, organizations et cetera have their own style guide, attached link is the one for ASCE.

 

http://pubs.asce.org/authors/book/generalresources/references.htm#referencesquickguide

 

Seems about as good as any I’ve used.

 

Tom

 

 

Thomas D. Skaggs, Ph.D., P.E.

Manager, Product Evaluation

APA

7011 S. 19th Street

Tacoma, WA 98466

253-620-7479 (office)

253-620-7235 (fax)

tom.skaggs@apawood.org

www.apawood.org

 

 

 

 

From: bill@polhemus.cc [mailto:bill@polhemus.cc]
Sent: Thursday, October 02, 2008 13:02
To: seaint@seaint.org
Subject: Citing Publications In Your Technical Writing

 

This has actually come up before with me, but I've never thought to ask.

If you do any technical writing such as specifications, reports, etc., where you have occasion to cite other references such as design codes and standards, ASTM specs, etc., what rules do you use to format the citations?

The problem I've had in the past is that the formal citation authorities such as the Modern Language Assocation (MLA) and the American Psychological Association (APA) address primarily scholarly works, specifically in the humanities and "soft sciences." I can never find quite the proper classification for things like ASCE 7 or AISC Manual of Steel Construction in the style guides for MLA or APA.

I realize it's a minor problem - and I've even looked at what the standards like AISC have done in their bibliographies - but I just can't seem to find the correct formula for this.

Any thoughts?

RE: Hardy Frame Moment Frame

Kidding … about what?

 

 

 

 

From: ASLCSE@aol.com [mailto:ASLCSE@aol.com]
Sent: Thursday, October 02, 2008 12:16 PM
To: seaint@seaint.org
Subject: Re: Hardy Frame Moment Frame

 

In a message dated 9/26/2008 11:53:44 AM Pacific Daylight Time, davea@laneengineers.com writes:

I would respectfully caution Mr Gallart that his post could be construed as borderline SPAM.  My opinion is that the information is helpful, but perhaps should have been written differently … maybe with a comment that is specific to whatever was being discussed on moment frames, then direct the readers to Hardy's product.

You got to be kidding!

Antonio S. Luisoni

Consulting SE




Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators.

Citing Publications In Your Technical Writing

This has actually come up before with me, but I've never thought to ask.

If you do any technical writing such as specifications, reports, etc., where you have occasion to cite other references such as design codes and standards, ASTM specs, etc., what rules do you use to format the citations?

The problem I've had in the past is that the formal citation authorities such as the Modern Language Assocation (MLA) and the American Psychological Association (APA) address primarily scholarly works, specifically in the humanities and "soft sciences." I can never find quite the proper classification for things like ASCE 7 or AISC Manual of Steel Construction in the style guides for MLA or APA.

I realize it's a minor problem - and I've even looked at what the standards like AISC have done in their bibliographies - but I just can't seem to find the correct formula for this.

Any thoughts?

RE: Bad Codes

Wow!  Boy, must I be dense.  I must thank you for providing such a clear and completely parallel example of submitting calculations to a City that gives me a better understanding of the ACI 318 creation and printing process.
 
Ignoring for the moment that ACI 318 is comprised of a bunch dumbass engineers, not Perfect Engineers like you (BTW, that reminds me that I should write to my State legislature to see that we change the Michigan PE Act to acknowledge that there is another type of PEs out there, aka Perfect Engineers...after all, we would not want people to get confused), I honestly cannot see how I missed it before.  Obviously, the process of writing, printing, and shipping ACI 318 to you is just like you preparing calculations for a project and submitting them to a city.
 
Being the dumbass that I am, I mistakenly thought that ACI 318 was prepared by a large group of individuals working part-time on it over a period of years who finished their work about a year ago.  I then made the error of believing that they would then print probably thousands of copies back in late 2007 or early 2008 so that it would be ready to submit to the IBC for review and final adoption in to the 2009 IBC code (I thought I had heard somewhere that ICC requires full, final print copies for consideration for adoption into their codes and those print copies must be ready by their hearings, which are usually in Feb/Mar of the adoption year).  This of course could not be right as it would then mean that those printed codes would sit around almost a 9 months with potentailly thousands of people reading through them finding just about every little error (such as typos, mistakes, misprints, and other more serious mistakes) prior to them shipping a copy to you.
 
But, you are right.  I was mistaken.  ACI 318 obviously JUST finished their work a couple weeks, maybe at most a couple months, ago and ACI just got it in print shape and printed of a copy just for you, just like you would finish up calculations a few weeks or so (or less) prior to sending them to the City.  And since ACI 318 and ACI staff as so inept at writting and type-setting the document, they still managed to find 4 pages worth errors in that the day or so it took them to get it ready to ship, which is impressive considering that like your calculations, they likely only had maybe a half dozen to a dozen or so pair of eyes pouring through the copy they just printed for you so that they could make the errata for you.
 
Thanks for pointing out what is clearing a completely parallel example.  I am so stupid that I would not have otherwise spotted it.
 
Oh, I have to thank you for pointing out the way to becoming a Perfect Engineer.  I never realized that in order to be a Perfect Engineer one had to be licensed as a Structural Engineer in four Western states.  Now, I do have some questions about that, however.  Do you have to be licensed as a Structural Engineer in four particular Western states or will any four Western states do?  If it must be four particular states, which ones are they?  And how do you define Western states?  West of the Mississippi?  West of the Rockies?  And when you say licensed as a Structural Engineer, do you really mean that you have to have an SE license or will particing structural engineering with a PE license (that is Professional Engineer license, of course, not a Perfect Engineer license...after all, from what I am understanding from you, the Perfect Engineer license is more than just the plain ol' PE license) do (after all, not all states have SE licenses)?  And while it is obviously the engineers from Eastern states are clearly inferioir, does being licensed in Eastern states get you some credit at all towards being a Perfect Engineer?  Maybe being licensed in 20 Eastern states being equivalent to being licensed in one Western state?  I look forward for the answers...after all, we all should strive to be a Perfect Engineer like you.
 
Regards,
 
Scott
Adrian, MI
-----Original Message-----
From: Garner, Robert [mailto:rgarner@moffattnichol.com]
Sent: Thursday, October 02, 2008 10:35 AM
To: seaint@seaint.org
Subject: Bad Codes

I just purchased the ACI 318-08 Concrete Code.  My wife called me at work and said I had a package waiting for me.  I love getting packages.  I knew it was the new Concrete Code because I had just ordered it.  So I looked forward to coming home to break into that book and see the progress our "cement buddies" had in making the Code a much improved document, especially our own dear Appendix D, which has succeeded in creating a whole new structural discipline of engineers that specialize exclusively in the design of CONCRETE ANCHORS (caps mine to honor a subject that ACI has seen fit to make as sophisticated as the wind provisions of ASCE.)  What was the first thing I found in the package?  Placed on top of the Code book so that it stood out proudly as if claiming, "Look at me!  I am very Important!"  Yep, Code Errata!  A brand new code that isn't even accepted by code bodies and hasn't even been purchased by most practicing engineers, and there are four pages of ERRORS, whoops, excuse me, Errata.  Can't anybody get a code book published without errors?  Errata?  B.S., these are errors.  I don't care if they are the publishers' proof reader's errors or just stupidity in writing these books.  When I do structural calculations, I don't do this kind of careless work.  I submit my calcs to the City then I routinely follow up with errata?  I don't think so.  Everyone makes mistakes but the codes make them routinely and treat them as if they are just another facet of the code. 

 

As a Structural Engineer licensed in the four western states, I find the constant necessity of correcting codes with constant errata totally unacceptable.

 

 

Robert Garner, S.E.

 

R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

Fax.: (619) 220-6055

e-mail: rgarner@moffattnichol.com

 

Re: Bad Codes

In a message dated 10/2/2008 9:15:16 AM Pacific Daylight Time, h.d.richardson@shaw.ca writes:
        The "building facility maintenance operator" can be prosecuted for using the term "engineer"; the "locomotive operator" can not because, unfortunately, their people invented the term before ours did.
 
I don't think he can be prosecuted for using the title ENGINEER (without a branch)
My 2 cents worth
 
Antonio S. "Tony" Luisoni
Consulting SE




Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators.

Re: Hardy Frame Moment Frame

In a message dated 9/26/2008 11:53:44 AM Pacific Daylight Time, davea@laneengineers.com writes:

I would respectfully caution Mr Gallart that his post could be construed as borderline SPAM.  My opinion is that the information is helpful, but perhaps should have been written differently … maybe with a comment that is specific to whatever was being discussed on moment frames, then direct the readers to Hardy's product.

You got to be kidding!
Antonio S. Luisoni
Consulting SE




Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators.

RE: Bad Codes

Thank you for your reply, Daniel,

 

For reference, the ACI 318-08 that I received was the First Printing, January 2008.  The errata I received was listed as First Printing and consisted of 7 pages.

 

Interesting that you received the Second Printing of ACI 318?

 

Which printing have others received?

 

I am pleased to note, however, that ACI printed the following on the top of the errata, "American Concrete Institute, Now offering more value to members".

 

 

Robert (Bob) Garner

 


From: Daniel Popp [mailto:drp181@yahoo.com]
Sent: Thursday, October 02, 2008 10:25 AM
To: seaint@seaint.org
Subject: Re: Bad Codes

 

Robert,

I had the same experience -- opening the 318-08 package and being greeted by a nine-page errata list.  I immediately sent it back to ACI with a polite letter explaining that as a practicing engineer, I did not have time to incorporate this excessive number of errata and that I would like a second printing when available.  After one reminder five months later, ACI did send me a second printing, which has only a few errata, none of which affect any design provisions (e.g. typos in definitions or commentary).

In my letter, I suggested that they not sell the remaining first printings, but judging from your recent experience, it appears that they might have.  AISC had the same situation with the 2005 Seismic Provisions, but they issued a recall and replaced all of the faulty versions at no charge.

Best regards,
Daniel Popp, S.E.

 

----- Original Message ----
From: "Garner, Robert" <rgarner@moffattnichol.com>
To: seaint@seaint.org
Sent: Thursday, October 2, 2008 4:35:08 AM
Subject: Bad Codes

I just purchased the ACI 318-08 Concrete Code.  My wife called me at work and said I had a package waiting for me.  I love getting packages.  I knew it was the new Concrete Code because I had just ordered it.  So I looked forward to coming home to break into that book and see the progress our "cement buddies" had in making the Code a much improved document, especially our own dear Appendix D, which has succeeded in creating a whole new structural discipline of engineers that specialize exclusively in the design of CONCRETE ANCHORS (caps mine to honor a subject that ACI has seen fit to make as sophisticated as the wind provisions of ASCE.)  What was the first thing I found in the package?  Placed on top of the Code book so that it stood out proudly as if claiming, "Look at me!  I am very Important!"  Yep, Code Errata!  A brand new code that isn't even accepted by code bodies and hasn't even been purchased by most practicing engineers, and there are four pages of ERRORS, whoops, excuse me, Errata.  Can't anybody get a code book published without errors?  Errata?  B.S., these are errors.  I don't care if they are the publishers' proof reader's errors or just stupidity in writing these books.  When I do structural calculations, I don't do this kind of careless work.  I submit my calcs to the City then I routinely follow up with errata?  I don't think so.  Everyone makes mistakes but the codes make them routinely and treat them as if they are just another facet of the code. 

 

As a Structural Engineer licensed in the four western states, I find the constant necessity of correcting codes with constant errata totally unacceptable.

 

 

Robert Garner, S.E.

 

R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

Fax.: (619) 220-6055

e-mail: rgarner@moffattnichol.com

 

RE: Bad Codes

Who is enforcing ACI 318-08?  The current IBC & CBC reference “05”.

 

 

 

 

 

From: Daniel Popp [mailto:drp181@yahoo.com]
Sent: Thursday, October 02, 2008 10:25 AM
To: seaint@seaint.org
Subject: Re: Bad Codes

 

Robert,

I had the same experience -- opening the 318-08 package and being greeted by a nine-page errata list.  I immediately sent it back to ACI with a polite letter explaining that as a practicing engineer, I did not have time to incorporate this excessive number of errata and that I would like a second printing when available.  After one reminder five months later, ACI did send me a second printing, which has only a few errata, none of which affect any design provisions (e.g. typos in definitions or commentary).

In my letter, I suggested that they not sell the remaining first printings, but judging from your recent experience, it appears that they might have.  AISC had the same situation with the 2005 Seismic Provisions, but they issued a recall and replaced all of the faulty versions at no charge.

Best regards,
Daniel Popp, S.E.

 

----- Original Message ----
From: "Garner, Robert" <rgarner@moffattnichol.com>
To: seaint@seaint.org
Sent: Thursday, October 2, 2008 4:35:08 AM
Subject: Bad Codes

I just purchased the ACI 318-08 Concrete Code.  My wife called me at work and said I had a package waiting for me.  I love getting packages.  I knew it was the new Concrete Code because I had just ordered it.  So I looked forward to coming home to break into that book and see the progress our "cement buddies" had in making the Code a much improved document, especially our own dear Appendix D, which has succeeded in creating a whole new structural discipline of engineers that specialize exclusively in the design of CONCRETE ANCHORS (caps mine to honor a subject that ACI has seen fit to make as sophisticated as the wind provisions of ASCE.)  What was the first thing I found in the package?  Placed on top of the Code book so that it stood out proudly as if claiming, "Look at me!  I am very Important!"  Yep, Code Errata!  A brand new code that isn't even accepted by code bodies and hasn't even been purchased by most practicing engineers, and there are four pages of ERRORS, whoops, excuse me, Errata.  Can't anybody get a code book published without errors?  Errata?  B.S., these are errors.  I don't care if they are the publishers' proof reader's errors or just stupidity in writing these books.  When I do structural calculations, I don't do this kind of careless work.  I submit my calcs to the City then I routinely follow up with errata?  I don't think so.  Everyone makes mistakes but the codes make them routinely and treat them as if they are just another facet of the code. 

 

As a Structural Engineer licensed in the four western states, I find the constant necessity of correcting codes with constant errata totally unacceptable.

 

 

Robert Garner, S.E.

 

R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

Fax.: (619) 220-6055

e-mail: rgarner@moffattnichol.com

 

Re: Bad Codes

Robert,

I had the same experience -- opening the 318-08 package and being greeted by a nine-page errata list.  I immediately sent it back to ACI with a polite letter explaining that as a practicing engineer, I did not have time to incorporate this excessive number of errata and that I would like a second printing when available.  After one reminder five months later, ACI did send me a second printing, which has only a few errata, none of which affect any design provisions (e.g. typos in definitions or commentary).

In my letter, I suggested that they not sell the remaining first printings, but judging from your recent experience, it appears that they might have.  AISC had the same situation with the 2005 Seismic Provisions, but they issued a recall and replaced all of the faulty versions at no charge.

Best regards,
Daniel Popp, S.E.

----- Original Message ----
From: "Garner, Robert" <rgarner@moffattnichol.com>
To: seaint@seaint.org
Sent: Thursday, October 2, 2008 4:35:08 AM
Subject: Bad Codes

I just purchased the ACI 318-08 Concrete Code.  My wife called me at work and said I had a package waiting for me.  I love getting packages.  I knew it was the new Concrete Code because I had just ordered it.  So I looked forward to coming home to break into that book and see the progress our "cement buddies" had in making the Code a much improved document, especially our own dear Appendix D, which has succeeded in creating a whole new structural discipline of engineers that specialize exclusively in the design of CONCRETE ANCHORS (caps mine to honor a subject that ACI has seen fit to make as sophisticated as the wind provisions of ASCE.)  What was the first thing I found in the package?  Placed on top of the Code book so that it stood out proudly as if claiming, "Look at me!  I am very Important!"  Yep, Code Errata!  A brand new code that isn't even accepted by code bodies and hasn't even been purchased by most practicing engineers, and there are four pages of ERRORS, whoops, excuse me, Errata.  Can't anybody get a code book published without errors?  Errata?  B.S., these are errors.  I don't care if they are the publishers' proof reader's errors or just stupidity in writing these books.  When I do structural calculations, I don't do this kind of careless work.  I submit my calcs to the City then I routinely follow up with errata?  I don't think so.  Everyone makes mistakes but the codes make them routinely and treat them as if they are just another facet of the code. 

 

As a Structural Engineer licensed in the four western states, I find the constant necessity of correcting codes with constant errata totally unacceptable.

 

 

Robert Garner, S.E.

 

R. Garner

Moffatt & Nichol

Tel.:  (619) 220-6050

Fax.: (619) 220-6055

e-mail: rgarner@moffattnichol.com

 

Re: Bad Codes

You could use the term "staticsstition".
----- Original Message -----
Sent: Thursday, October 02, 2008 10:26 AM
Subject: RE: Bad Codes

I've been calling myself a Structiste.
-----Original Message-----
From: Daryl Richardson [mailto:h.d.richardson@shaw.ca]
Sent: Thursday, October 02, 2008 9:14 AM
To: seaint@seaint.org
Subject: Re: Bad Codes

Casey,
 
        The "building facility maintenance operator" can be prosecuted for using the term "engineer"; the "locomotive operator" can not because, unfortunately, their people invented the term before ours did.
 
Regards,
 
H. Daryl Richardson

RE: Seismic Charges

Agreed.

 

Bob

 


From: Daryl Richardson [mailto:h.d.richardson@shaw.ca]
Sent: Thursday, October 02, 2008 9:32 AM
To: seaint@seaint.org
Subject: Re: Seismic Charges

 

Bob,

 

        I think your posting is closest to Rich's needs of those posted so far.  I think the others posting on this subject (and I have the highest respect for them as engineers) are getting a little too technical.  I think that the seismic explosions will be in the same order of magnitude as pile driving for a new building next door.  I think that an independent inspection company should be retained to go door-to-door looking or and photographing pre-existing foundation damage as a means of mitigating the resulting lawsuits.  All of this should be at the expense of the contractor causing the exposure to damage.

 

Regards,

 

H. Daryl Richardson

----- Original Message -----

Sent: Thursday, October 02, 2008 8:07 AM

Subject: RE: Seismic Charges

 

Good morning, Rich,

 

One of my early jobs was working for tunneling contractors in New York City on tunnel projects.  We were doing drill, blast and muck under the Riverside Drive, under a lot of apartments full of concerned citizens.  First, we did a photo survey of all buildings, inside and out, to verify existing damage.  Then we monitored each shot.  That was my job.  I sat outside different apartment buildings with a Sprengnether Instrument, I think it was an accelerometer.  It would record blast vibrations which were limited by the Contract to something like 2 inches per second (memory may be bad here.).  But you might check this out.

 

Needless to say, I've got great stories from this experience.  The lady who sued us for getting knocked off her toilet, and on and on.

 

Bob Garner, S.E.

 


From: Rich Lewis [mailto:seaint04@lewisengineering.com]
Sent: Wednesday, October 01, 2008 7:28 PM
To: seaint@seaint.org
Subject: Seismic Charges

 

I was asked a question today that I haven’t seen addressed before.  A client told us they oil and gas industry around his plant was going to be setting off seismic charges for exploration.  The plant in located in Louisiana.  He wanted to know how it might affect his facilities.  We asked him to find out where the charges will be set and what size charge they will be, the energy released.   I’m not sure how I would evaluate the affect on the building.  Obviously we don’t want to set a charge off near a building.  Are there any specific items we should be considering when responding to their questions?  I thinking this may be more of a geotechnical question then a structural question.   Is there any method of converting explosive underground charges into something like a seismic event on a building?

 

Thanks for your help.

 

Rich

 

 

 

RE: R values for vertical combinations exceptions

Regarding the row house, they definetly do not meet the separation requirements, I was more concerned if by definition, the buildings are considered detatched, therefore you can use the R value exception. So in order for a building to be considered "detached" does it have to meet the separation requirements? Or is a detached building one with separate foundations and structural systems with common roofing and flashing.
 
In San Francisco existing buildings that are seismically upgraded do not need to meet the separation requirements, I have not found that language in the California Building Code.


From: David Topete [mailto:d.topete73@gmail.com]
Sent: Thursday, October 02, 2008 9:20 AM
To: seaint@seaint.org
Subject: Re: R values for vertical combinations exceptions

IIRC, the SEAOC Blue Book had commentary/language that a designer can reasonably argue the moment frame design force based on a lower R while the balance of the structure is designed for the higher R value for shetthed wood walls.  Most building departments have accepted this argument before.

As for the rowhouse, if 3 stories tall, I don't think a moment frame or wood shearwall building would meet the building separation requirements at 1".  Good luck.

On Thu, Oct 2, 2008 at 8:59 AM, Jeff Smith <jeffsmith7@comcast.net> wrote:
I am looking at the exceptions to section 12.2.3.1 page 122 ASCE 7-05 Exception 3
 
Does exception 3 mean that for a typical wood framed three story single family dwelling with a moment frame at only the garage, the building be designed for an R of 6.5 and design just the moment frame for 3.5?
 
Is a zero set back row house considered a "detached" dwelling, (1" between buildings)?
 
Jeff



--
David Topete, SE