thanks
btw, what is a manual D, a sizing calculation method?
bill

"PJx" wrote in message
...
On Mon, 06 Dec 2004 15:31:32 GMT, "bill a"
wrote:

I have a shop building with central hvac and I wanted to reduce the air
flow
on one side of a divider wall (about 35% of the floor space) and add flow
to
the other side. I figure on adding registers and maybe another run on
the
"warm" side. On the "cold" side, would restriction of flow at the
registers be OK, or is it better to restrict the ductwork run near the
plenum?
Thanks
Bill

You can do it yourself and you don't need a manual D.
You have the right idea, except you may want to just increase the size
of the duct to the side you want more air on. And after that you can
can fine tune with restricting the air on the side you want less air
in.



Pj