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jsbeliveau 08-04-2012 10:26 AM

jeff
 
trying to frame my gable end lookout but the gable end truss is the same as the rest of my trusses. how do i frame this without cutting my truss. any help would be great. thanks

mae-ling 08-04-2012 04:13 PM

How far is the Overhang?
1' or less? Here we use a 'ladder' that just gets nailed on the outside. Can add metal straps that go on top of the ladder 'steps' then bend down the inside of the truss.
http://www.barplan.com/blog/home/wp-...oker_truss.jpg

Usually if it is 2' of overhang the last truss is 3.5" lower.
https://encrypted-tbn1.google.com/im...h8DF-wAUoAXCRG

joecaption 08-04-2012 04:28 PM

Something looks odd in those two pictures to me.
The 2 X 4 blocking to space out the rafter is shown differant in the two pictures.
If it was done like the bigger picture I would think the whole thing would sag.
Your counting on only 1-1/2 to support it. Turn them the other way and it becomes 3-1/2".

Around here even with light snow load we cut into the rafters to the second rafter back from the wall, to be 100% sure the end of the roof does not sag and use 2 X 6's instead of 1Xs for the fashia
http://www.carpentry-pro-framer.com/...-overhang.html

mae-ling 08-04-2012 04:31 PM

If you are in an area that requires permits, talk to your inpsector before doing this.

If you have to Notch the last truss every 4' for 2x4 on the flat (1.5" down 3.5" wide.) Install 2x4 'outlookers' that get nailed into the last rafter back and stick out 1.5" (fascia thickness) less then your total overall desired Overhang.
Then install 2x6 fascia on the ends of these.
Install a continuous 2x4 up under these outlookers on the inside of last rafter.

Between the 2x4 on the inside and the plywood on the outside you have plenty of strength.

GBrackins 08-04-2012 06:27 PM

could always remove the gable endwall truss and frame a gable endwall so that the outlookers could be installed normally, just a thought

mae-ling 08-04-2012 06:47 PM

Quote:

Originally Posted by joecaption (Post 981457)
Something looks odd in those two pictures to me.
The 2 X 4 blocking to space out the rafter is shown differant in the two pictures.
If it was done like the bigger picture I would think the whole thing would sag.
Your counting on only 1-1/2 to support it. Turn them the other way and it becomes 3-1/2".
http://www.carpentry-pro-framer.com/...-overhang.html

I agree the 3.5" height is stronger but on 12" or less it isn't going to matter.


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