This is for a regular electric dryer.I can't see the pic, but you can run a rigid duct up the wall. It doesn't have to be inside the wall. They also make flat box shaped periscope type ones, but that's not made for long lengths. Is this for a regular dryer or stackable?
I believe pvc is strictly prohibited anywhere in the country. Lint sticks to it and it builds a static charge. Plus it doesn't handle burning very well.Consider 4 PVC drain pipe with long sweep / long radius 90s not glued so it can be disassembled for inspection / cleaning.
Actually they now are allowing screws to be used, as long as they do not penetrate anymore then 1/8" into the interior of the dryer duct.You need to use 4" metal duct. Metal tape on the joints- no screws allowed. The termination must be 3ft from windows and other air intakes.
There is no reason to ground the duct. As for your friends places catching on fire. I doubt that it had anything to do with the dryer vent.I would definetly use metal as was recommended .Would also make sure there is a ground wire attached.I've have three friends places burn even with metal.
Best thing with any is to make sure you have a regular cleaning schedule.
I'm not one of "those kinds of people". Just sean to many things happen from lint buildup and inproper materials and installs.
I do mot like them either. Too much hassle when you have to have a bit of flex, when you have the vent just a bit higher then the length of the duct.They've been allowed for a long time but the pros around my area don't use them.
What Fire Marshall. Not a requirement in Springfield. The duct is already grounded when connected to the dryer, unless the exhaust outlet is plastic. There is no static charge in the metal duct. Also how did they state to ground it, since it would have to be grounded with a complete path back to the incoming Cold Water pipe if Copper out to the curb, or to the Earth Ground Ufer or Rod.That's wasn't my call.That is what the fire marshall determined as the cause.Grounding will help with the static charge.