I don't know jack about the duct, but 2c per foot? $2,000 over 20
miles.
If you still need the thicker wall in some circumstances, then you might
lose two grand in the cost of stocking and shipping and handling two
rolls of tube vs one roll of tube.
The first time somebody brings the wrong roll to a job site and has to
go back, then you've lost more than two grand of productivity. Seems
like it couldn't be worth it to me. But I don't know jack.
-Adam
------ Original Message ------
From: [email protected]
To: [email protected]
Sent: 4/20/2018 11:11:36 AM
Subject: [AFMUG] OT One for the borg
I am considering using some SDR 13.5 duct where I have always used
SDR11 before.
The DR stands for diameter ratio. Ratio between wall thickness and
outer diameter (I think). Higher numbers mean thinner wall thickness.
Others use the 13.5 unless they get into rocky areas. I am a bit
gunshy as the cost is only about 2 cents per foot different.
Anyone here have any experiences they can relate?
