max header span length

Posted by on January 27, 2007, 9:44 am

Hi,
If I am adding a large bay window with a rough opening of 8ft in a
load bearing first floor of a two story home can I use 2x12s for a
header? I would using douglas fir. Any thoughts are appreciated.
Thanks

Posted by hawgeye on January 27, 2007, 10:02 am

> Hi,
> If I am adding a large bay window with a rough opening of 8ft in a
> load bearing first floor of a two story home can I use 2x12s for a
> header? I would using douglas fir. Any thoughts are appreciated.
> Thanks

Assuming it's a 2x4 stud wall, you'll have to put a piece of 1/2" plywood
between the 2x12's to make up the right thickness. You may also want to use
double king-studs on the ends. If you frame it in right and the load you
mentioned isn't out of the ordinary, you should be OK.

--
hawgeye ©

Posted by RicodJour on January 27, 2007, 11:07 am

rilapoin@optonline.net wrote:

Visit the Canadian Wood Council's web site and online design tool,
SpanCalc.
http://www.canadianwoodcouncil.ca/design/tools/calcs/SpanCalc_2002/
Make sure you understand your local code load requirements and
orientation of framing members, then start clicking away.

R

Posted by Michael Bulatovich on January 27, 2007, 11:52 am

> rilapoin@optonline.net wrote:

>> Hi,
>> If I am adding a large bay window with a rough opening of 8ft in a
>> load bearing first floor of a two story home can I use 2x12s for a
>> header? I would using douglas fir. Any thoughts are appreciated.

> Visit the Canadian Wood Council's web site and online design tool,
> SpanCalc.
> http://www.canadianwoodcouncil.ca/design/tools/calcs/SpanCalc_2002/

How long has that been there?
--

MichaelB
www.michaelbulatovich.ca

Posted by RicodJour on January 27, 2007, 7:09 pm

Michael Bulatovich wrote:

> > Visit the Canadian Wood Council's web site and online design tool,
> > SpanCalc.
> > http://www.canadianwoodcouncil.ca/design/tools/calcs/SpanCalc_2002/

> How long has that been there?

Long time. They have some useful tools; a worthwhile site to poke
around.

R

Page 1 of 4 1 2 3 > last >>

Similar Threads	Posted
Where can i buy an 8' length of 30" diameter pipe ?	April 18, 2009, 10:22 pm
Max.length of 3 meter unbuttresed double-brick wall ?	November 15, 2007, 11:59 pm
Header under a door question	December 1, 2008, 9:09 am
Quality issue with LVL header in basement?	December 28, 2006, 10:45 pm
Help Needed - Garage Door Header	April 7, 2007, 9:10 pm
Increasing size of existing header	February 7, 2009, 12:35 pm
Patio cover header attached to fascia question	November 17, 2007, 7:52 pm
Re: Plywood span	November 15, 2006, 12:10 pm
Re: Plywood span	November 17, 2006, 7:58 pm
steel span	May 17, 2007, 11:03 am