Installing Header For Kitchen Pass Through - Remodeling - Page 3 - DIY Chatroom Home Improvement Forum

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Old 09-25-2009, 08:37 PM   #31
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A picture of the roof from outside might help too


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Old 09-25-2009, 08:50 PM   #32
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ill have to get that tomm since its already dark but will do
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Old 09-26-2009, 12:31 AM   #33
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Replace the diagonal brace and it's support if you need to move it from over the wall. It is helping somewhat to keep the gable from racking (along with the roof sheathing diaphragm). The wall/beam will be supporting the ceiling joists only.
If the beam span is 10', the load is 1/2 of the c.j.'s span 24 /2 = 12' x c.j. load of 5# dead load, 15# live load = 20# total load
Even figuring 5/8" drywall at 2.8# sq.ft., dense fill loose cellulose insulation 12" high- R-42 at 4.6#, d/f ceiling joist 24"o.c. at 1.1# sq.ft., texture and light fixtures at 1.5# = 10# but I'm using 20#.

10 x 12 x 20 = 2400# total load. 3x10 (2-2x10's) are rated to support 2733#, perfect for your application. I would temporarily support the walls on both sides, cut the ceiling joists out for a double (2) 2x10 gang nailed together 16" o.c. two rows with 16d nails, 2" away from the top and bottom of the boards. Install correct sized hangers under the ceiling joists, using required length nails for the application. (special shear hangers) These are critical to keep the walls from spreading due to the weight on the roof assembly. Run the built-up beam 18" long on each end over the 10' opening with 3 studs under each end, closest to the opening. Before installing them, put blocks, 2x4's on end in the joist space below for positive bearing under the three trimmer studs to the beam below.. Above the beam, on it’s top edge to top of ceiling joist, nail a couple of diagonal braces (24" long) to prevent rotation, perpendicular to the beam, on each end. Strap the beam to the wall at each end (vertically) with a 24" 1-1/4"wide steel strap, on both sides for earthquake.
Run this by your local Building Department for their approval. They definitely want to keep you safe, as do I.

Any advice given here should be verified by a Licensed Structural Engineer.
Be safe, Gary


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