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Re: HSS vs WF columns

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What about fire rating?

Regards,

H. Daryl Richardson

----- Original Message ----- From: "Kestner, James W." <jkestner(--nospam--at)somervilleinc.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Thursday, September 01, 2005 7:16 AM
Subject: RE: HSS vs WF columns


This is a subject that I usually discuss with the architect. We are trying to minimize the total cost of the building. On certain buildings (especially retail), the architect may want to paint out the tube columns instead of wrap them in drywall.

Jim K.


-----Original Message-----
From: Gary Hodgson & Associates [mailto:ghodgson(--nospam--at)bellnet.ca]
Sent: Thursday, September 01, 2005 6:41 AM
To: seaint(--nospam--at)seaint.org
Subject: Re: HSS vs WF columns


I think you have to look at more than the material price.  The cost
of connections to HSS can be more.  A wide flange is more accessible
for bolting, if the HSS is lighter due to its more efficient shape it
may be narrower and hence harder to fit angles on for conns, full
strength splices of tubes are more expensive and so on.  However, HSS
are more aesthetically pleasing.

Hope this helps a little.

Gary


On 31 Aug 2005 at 21:25, Will Haynes wrote:

I did, and he said about 50% more expensive for HSS material than WF.
Given the numbers I stated, he thought it would be about a wash. But
an estimator told me it can be twice as much for an HSS depending on
the shapes, like you stated. I'd like to use a minimum of a 10" deep
WF,I don't really feel that good about using an 8" deep wide flange
column for 16 to 20 ft heights.This is going to take the WF cost up a
little more still. I don't know, it wouldn't be a big dealexcept Iam
under scrutiny for proposing HSS columns when the job was initially
estimated.



    From: "Jordan Truesdell, PE" <seaint1(--nospam--at)truesdellengineering.com>
    Reply-To: <seaint(--nospam--at)seaint.org> To: seaint(--nospam--at)seaint.org Subject: Re:
    HSS vs WF columns Date: Wed, 31 Aug 2005 20:57:01 -0400

    Last I heard, WF sections were going for .60/lb in low volume, HSS
    for $1.25. In 20-25T quantites, they may be a bit closer in price.
    Why not call a steel supplier in your area and get a ballpark
    number for that quantity, if its the raw steel price you're
    worried about?

    Eli Grassley wrote:
    I'd say it depends on how you want to detail your bracing or
    moment frame connections. For X-bracing, if you are going with
    welded gusset plate to column/beam then HSS is the way to go.
    Bolted gussets and you need WF columns. For moment frames it's a
    little trickier, but I think that WF column to WF beam is the
    norm. AISC provides way more info on this type of moment
    connection.

I prefer to use HSS in anything less than three stories just because
tube section properties lend itself to axial loading better than
WF...thus the weight savings you noted.

    ~~ Eli Grassley, PE


    -----Original Message-----
    From: Will Haynes [mailto:gtg740p(--nospam--at)hotmail.com]
    Sent: Wednesday, August 31, 2005 5:09 PM
    To: seaint(--nospam--at)seaint.org
    Subject: HSS vs WF columns

    What is more commonly used in an office building? HSS or WF
    columns?



    I am looking at an office building now with a pretty high floor to
    floor height (16ft). The weight I get using HSS columns is about
    40% less than the weight I am getting if I use WF columns. But I
    am not sure if the HSS material cost will still cause the HSS
    option to be more expensive.



    If you were given that the WF choice was 50,000 lbs and the HSS
    was 35,000 lbs, which one would you choose?





    Will








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