Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

RE: Constructability article in April MSC

[Subject Prev][Subject Next][Thread Prev][Thread Next]

That's what I thought, too.  W18's at 36"?  I think the original engineer got beat way down on his fee.


From: Brian K. Smith [mailto:smithegr(--nospam--at)]
Sent: Wednesday, April 12, 2006 8:03 AM
To: seaint(--nospam--at)
Subject: Re: Constructability article in April MSC


When I read the article, it sounded to me like "constructibility" was a nice word for "over designed in the first place."



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

Sent: Wednesday, April 12, 2006 9:16 AM

Subject: Constructability article in April MSC


Did anyone else see the constructibility article on p28 of MSC this
month and think, "the architect must have been crazy"??  The gist of the
article is that by doing a full review and redesign using modern BIM
and  having the independent SE using the same software as the
fabricator, they saved hundreds of thousands of dollars and eliminated
78% of the beams in a building. It sounds very impressive until you look
at what the A/E had done to start with: an 8" deep steel beam depth
spanning (I'm guessing) a 30' to 40' bay. They had W8x40s on 3'
centers!   Most of the efficiency seems to come from increasing the beam
depth to 18" and more than tripling the beam spacing.

I have to think that that was an arch. driven floor space, not a design
choice by the original SE. It looks like the consulting engr told the
architect to increase his f-f height or live with the beams, where the
in house (assuming it was in house) didn't have the clout to do so. This
looks like an example of poor understanding of structural efficiency by
the architects, and blatant disregard for the client's budget.

It's nice to see what efficient design can do, but I'm not sure this is
"repeatable" efficiency on a typical, sensibly designed projects.


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at:
*   This email was sent to you via Structural Engineers
*   Association of Southern California (SEAOSC) server. To
*   subscribe (no fee) or UnSubscribe, please go to:
*   Questions to seaint-ad(--nospam--at) Remember, any email you
*   send to the list is public domain and may be re-posted
*   without your permission. Make sure you visit our web
*   site at:
******* ****** ****** ****** ******* ****** ****** ********

No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.385 / Virus Database: 268.4.1/307 - Release Date: 4/10/2006

The information contained in the e-Mail, including any accompanying documents or attachments, is from Moffatt & Nichol and is intended only for the use of the individual or entity named above, and is privileged and confidential. If you are not the intended recipient, be aware that any disclosure, dissemination, distribution, copying or use of the contents of this message is strictly prohibited. If you received this message in error, please notify us.