Brace, jack, shim, shore. Do whatever to get everything
straightened out. Check the roof line and the ceiling joist line.
I am a bit surprised if there are no signs of the rotted out
portion.

Remove and replace any wood that has active rot - cut back to good
sound wood.

If you can put in 12 footers, do it. If there are any other truss
members, duplicate them also. Sister the new members on using
plenty of panel adhesive and a generous nail pattern using common
nails alternating a high/low nail pattern. If the existing truss
is old and well seasoned, you may need to use a nail gun or pre
drill a lead hole. Air gun nails are thinner and do not generate
the same sheer numbers that common nails do.

Custom cut a plywood gusset for each side of the damaged truss
that fits fairly well from the bottom of the bottom chord to
rafter top, from outside plate line to whatever 4' plywood would
cover, keep the grain vertical. Use good marine grade 7 ply.
Glue everything. Throughbolt ply to ply with 3/8 bolts with
fender washers. The sandwich will be about 4 1/2" thick.

--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




"MiamiCuse" wrote in message
...
Hi I am repairing some stained ceiling sheetrock in my garage,
and after removing some sections of it I realized there is more
damage.

First the leak in the roof has been found and repair, so there
should be no more water penetration.

Now I can see the water leak has been there for a long time as
the end of the truss were severly damaged. The end of the joist
and rafter meet and they rest on the concrete block wall as
shown below:

http://i173.photobucket.com/albums/w...aragetruss.jpg

Now there is a truss every 24" or so but one of them directly
below the leak is damaged very badly. If you look at the image
attached, the section labeled "C" in green when I pushed it just
crumbled. Now the good news is that the roof is still up and it
has been like this for years this truss has not been supporting
it's share of the load for a long time now. The ends where it
is rotted away is about 12" or so in length.

I went up to the attic and tried to see if it's possible to
remove "A" and "B" completely and put new lumbers in but this is
going to be near impossible with all the AC duct work running
across, electric conduits nailed along it, ceiling hi hats and
fans etc...and very tight space.

So what I plan to do is to get two 12' 2x4s. I plan to put one
adjacent to the rafter and one adjacent to the joist for almost
the entire length. The question is now should I attach the two?

Should I drill a hole every 18" or so and insert large (1/2")
bolts through both and tie them together?

Or should I use some sort of structural glue/epocy to glue both
together?

Or should I use those galvanized steel tie/straps to nail them
together?

Or all of the above?

I also plan to insert some vertical wood members between the new
sister rafter and joist.

Or this is all wrong?

Thanks in advance,

MC