Anyone built a portal frame with 24 foot bays?
What purlins were used, and what spacings?
I know that 9x3 timber is available in 24ft lengths. I want to mix 24ft and 20ft bays to run across the face of an existing building, don't want a big post right in the middle of the bay!
TIA
What purlins were used, and what spacings?
I know that 9x3 timber is available in 24ft lengths. I want to mix 24ft and 20ft bays to run across the face of an existing building, don't want a big post right in the middle of the bay!
TIA