Conduit Attic To Basement

My house is two floors with an insulated attic above the second floor.
Conduit attic to basement. The installer will determine the best location for it however it doesn t appear in the current at least mine version of the book but it used to be in it from another consultant during the design meeting. They frame things they don t work with pipe or would know the context in. I plan to run conduit 2 pvc from the ceiling in the first floor to the attic in the second floor. Builder can put in an 1 1 2 pvc conduit from basement to attic for 412.
I m wanting to run some future proof low voltage conduit from attic to basement unfinished area where i have a structured media enclosure mounted. 2 framers are not the right guys for this. It seems no matter what you will have to open a couple walls but might not be as bad as you think. If you have a rigid line then you can open up one wall on second floor to drill to attic and first and then drill up to first from basement.
Conduit from basement to attic 1 the materials may be 10 but it takes time to do it so add another 60 at least to cover an employee from any sort. The national electrical code which is the basis for all local building codes has specific regulations for installing electrical wires so that they are protected from damage. You can get different sizes of pvc and you can run 2 3 lines in one run. I only have the basic idea that it s going to run inside walls and can be used in the future for running wires from basement to each floor.
3 never ever give. This will allow me to distribute cat6 coax etc. I d use a junction box such as a 4 square deep box with blank cover on each conduit top and bottom and use a riser clamp to keep the conduits from sliding back into the basement. It s basically a 2 central vac pipe that will be capped off in the basement and attic to comply with municipal codes.
Throughout the second floor rooms. One portion of the basement is unfinished. But if it s only on one side o. From the attic lower the fish tape all the way to the basement connect your wire and then pull it back through.
The only straight shot from attic to basement that i can see is the cold air return which has an grate on each floor in roughly the same place. If there is some excess room crawl into the attic look down if the hole in the 2nd floor is sloppy also you might be able to drop a small chain down the wall all the way to the basement. 90 each conduit with an lb and run them at least 8 to 10 feet further but horizontally and preferably to a gable wall where you can mount a junction box at a comfortable working height. Conduit from basement to attic.