Hi Coach,
I am taking CDS on this saturday and would like to have my rationale on determining the duct space depth with you.
I usually choose the deepest duct size on the same ceiling surface. Then add 8" for lighting..
Please see the images and let me know. Thank you!
http://u.cubeupload.com/salmonx/3rd.png
http://u.cubeupload.com/salmonx/DUCTSPACE2.jpg ---> this is how I drew to determine the total depth for 1st floor ceiling
http://u.cubeupload.com/salmonx/Rationale01copy.png ----> this is the number I found "the deepest"
http://u.cubeupload.com/salmonx/Rationale02copy.png ---> this is the number I found "the deeepest" for 2nd floor