My reply has absolutely nothing to do with the subject at hand. Alan, I see you live in Washington, NC. It’s a place with a long and pleasant memory for me. I spent many a summer with my grandparents there fifty or more years ago. My grandfather ran the production credit association office there. Thanks for replying and giving me an opportunity to remember.The layout looks good. I can't tell their height, but make sure blast gates are positioned where people can easily reach and will use them.
With a 9.5' ceiling, one option is to raise the floor 10" - 12" - screw ply, Advantech, etc. down to pillars and beams, then run the duct (and electrical for TSbelow the floor. That almost eliminates vertical drops except one up to the cyclone.
Unless you have really bad ducting with leaks everywhere, there is absolutely no need to add blast gates to close off trunks or drops. You just need them at each machine. With the machine blast gates closed, no air flows through the drop or trunk therefore there is no turbulence generated and no static pressure issue. Bill Pentz incorrectly left the recommendation to put blast gates on trunks/mains on his website, but he is WRONG! Since you are using PVC DO NOT glue or solvent weld it together- friction fit only. Use a single screw to keep it from separating if needed on vertical fittings and joints. Then after everything is fully assembled seal the fittings and joints FROM THE OUTSIDE ONLY with a TINY bead of silicone (not latex or hybrid) caulk. Remember the system is under negative pressure so the caulk will be pulled tight. If you use silicone on the outside you can easily disassemble parts and easily rub the silicone off with a finger, when it is time to reconfigure your duct- you will reconfigure sooner or later.
PVC, as you said wouldn't generate enough spark potential to start a duct fire. It is not a conductor so will accumulate static just inches from any grounding wire or foil so that is of marginal effectiveness. Often, once the duct is seasoned it stops generating static. Also, with the humidity in AL it may not be a problem anyway. If it is, just wrap grounded foil, screen, mesh, etc. in the areas most likely to be touched.
Make sure your sound isolation closet is ventilated so the motor will not overheat and it won't block air flowing from the filters- the closet is part of the "DC system." Any resistance anywhere in the system will reduce the efficiency of the system. Any chance of putting the closet outside or in the storage room? That would be my preference.
Agreed, since you are in a retirement community with a shared space, you might fall into commercial use not home/residential use, so a quick call into local permitting department might save you a lot of headache later.You might check your building code and insurance
Not what Bill Pentz says, but you only know for sure if you test.In your original layout I would consider having the hard line for the table saw and bandsaw stop higher in the air and run the rest as flexible hose, this way if you ever wanted to run anything wider through the table saw you could move the dust hose to the side which is a lot easier than trying to move PVC pipe. I doubt you would notice any reduction in suction switching from a few feet of PVC to a few feet of flex.
The video used to be on the American Woodworker Magazine website. When they closed up shop/were sold, most of the media was moved to F+W but not my video. I'm not sure who, if anyone, owns any of that stuff now. (I haven't checked the WayBack machine). Also, unfortunately, somewhere along the way I deleted my master or lost it when I transferred files to a new computer. With all the time on my hands, maybe I should re-shoot it. The video of my adjustable height assembly table is gone as well (the two part AWW article can still be found). I could re-shoot that one too and add my similarly designed adjustable height woodworking bench to it.Also, if the links to your setup no longer work Alan that is a shame your autogate setup is nothing less of awesome.
Alan, that would be great and if were willing, we could post it on the "Learn" section of the NCWW.com site!The video used to be on the American Woodworker Magazine website. When they closed up shop/were sold, most of the media was moved to F+W but not my video. I'm not sure who, if anyone, owns any of that stuff now. (I haven't checked the WayBack machine). Also, unfortunately, somewhere along the way I deleted my master or lost it when I transferred files to a new computer. With all the time on my hands, maybe I should re-shoot it. The video of my adjustable height assembly table is gone as well (the two part AWW article can still be found). I could re-shoot that one too and add my similarly designed adjustable height woodworking bench to it.