Reducing ductwork
#1
01-04-07, 08:25 AM
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Reducing ductwork
I am adding a bathroom in my basement and the ductwork causes the ceiling to hang below the minimum height allowed by building code. I need to move it up 4 - 6 inches and it is 8 inches deep.
Is there any solution to this? I am guessing that installing smaller ductwork for that part of the run will mess up the airflow. What if I installed ductwork that has the same volume, but has different dimensions (flatter and wider)?
Has anybody encountered a situation like this? Any ideas?
Is there any solution to this? I am guessing that installing smaller ductwork for that part of the run will mess up the airflow. What if I installed ductwork that has the same volume, but has different dimensions (flatter and wider)?
Has anybody encountered a situation like this? Any ideas?
#2
01-04-07, 08:46 AM
You dont say how big the duct you have is. Yes you can make it flatter. But it will be very wide for the sq" . Then it will pop or make noise. There are wall stacks, that is duct
3 1/4" X 10" X12" X 14"
You still need the same sq " in the duct
3 1/4" X 10" X12" X 14"
You still need the same sq " in the duct
#3
01-04-07, 09:23 AM
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The current duct is 8"X 20". The run in queston is about 8 feet and there are two branches coming off it.
Now that I think of it, it probably isn't a good idea to try and replace it. Looks like I am going to have to work around it.
Now that I think of it, it probably isn't a good idea to try and replace it. Looks like I am going to have to work around it.
#4
01-04-07, 11:24 AM
You could span that duct with 5/8 drywall Or I have used a droped ceiling. That will cost you about just 1" going under the duct. Boy you would need a 6"X27" duct for what you have there . That would go BANG every time the blower came on
#5
01-04-07, 12:33 PM
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I was going ot frame it, but that leaves me with a 6'4" ceiling and a building code violation. I am trying to follow code. Maybe I will cheat this time.
I didn't know flattening a duct would go BANG.. thanks. I probably wouldn't have done it anyway. Just brainstorming.
I didn't know flattening a duct would go BANG.. thanks. I probably wouldn't have done it anyway. Just brainstorming.
#7
01-04-07, 04:40 PM
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