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Posted by TP on August 13, 2005, 6:59 pm
This is the same info given to the Glulam (paralam) company.
They spec’d 3, 1 1/2”x 9 1/2” GluLam beam. I would just like to
use steel to bring the 2x10’s to the same spec.
Rick wrote:
>
>>
>>> I have two 2x10's 18 feet long supported in the middle by one
>>>2x4. Windows are now in these openings. I'd like to remove the
>>>center 2x4 and replace the windows with a 16'x 7' garage door.
>>>What size (thickness) flitch plate would be needed to strengthen
>>>the 2x10's to support the open span? (Keeping within the 9¼"
>>>height.) Single story, 4/12 roof, rafters are perpendicular to
>>>header. No live load, just ceiling joist. Snow load for western
>>>NY. Next wall parallel to header is 22'feet away.
>>>
>>>Thanks
>>>TP
>>
>>The calculations to determine the individual tributary loads and the
>>resultant header load are pretty straightforward, the flitch plate
>>calculations a little more involved. I don't think you are going to
>>find anyone on a newsgroup (even a PE) who will be willing to give
>>you an absolute answer.
>>
>>I'd suggest you contact a local engineer...
>
>
> And a more complete deescription would be needed-any roof overhangs,
> roof style, stick or truss framed roof, etc. To many thngs not
> mentioned.
>
> If I'm not mistaken, a ceiling live load has to be applied to any
> space with a headroom greater than 42 inches. I would imagine snow
> load is at least 50 PSF in western NY. The local authority would tell
> you that value.
>
> Again, call a local...
>
>>
>
>
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