Range hood vent/cutting celing joist

Out2pasteur

I have to vent a range hood. The range is on an interior wall so the vent must go through the kitchen celling and up to a roof vent. The house is a 1958 single level ranch with an attic this should not be a problem.

The problem is a ceiling joist directly over the range hood-perpendicular to the wall the hood is on. The specified six-inch vent ducting cannot be worked around the beam within the casing for the top of the hood. So my plan is to cut the ceiling joist and header between adjacent joists.

The ceiling joists are 2x6 with a 12 foot span and spaced at 16 inches. About 2 feet of the joist would be cut off its end as the hood is mounted on the interior load-bearing wall/the wall the joists sit on. There is not on a truss system.

Do i need to sister the adjacent joists before putting the header on the cut joist?
Any other tips/advice/wisdom here?

Thanks in advance.

handyman_20772

Post a couple of pictures of what you need to do, and someone on here can at least give you a idea of what steps you may need to take.

Out2pasteur

Handyman- Thanks for the reply, and pardon the delay as the dayjob got in the way. After taking few photos that weren't useful, i made a drawing. The picture (not to scale) is a top-down view from the attic.

Basically, i need to cut the joist to get the range hood vent duct run. Can I just brace the cut joist to each adjacent joists with a header (as in second picture) , or do i need to sister each of the joists first?

Any suggestions are welcome.
Thanks!

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GBrackins

you could do that, or just a new ceiling joist on either side of the vent, wouldn't need to go your header, just a thought

__________________
Gary

"You get what you pay for, and sometimes free costs more!"

TarheelTerp

1) offset fittings
2) different size/shape duct.

http://www.graymetal.com/

Out2pasteur

Thanks, but I'm not clear on your suggestion... I could put in two full span joists on either side of the cut joist, and skip the header bracing the cut end?

Out2pasteur

Thanks for the input. The 6" duct is in a 10 1/2" housing on the kitchen side, so that limits offsetting.
I'll browse the link you provided to see if I can get something to squeeze up one side of the joist.