Muddin_dude06
...
- Joined
- Sep 10, 2007
- Messages
- 2,541
I have the chance to pick up what I would call the main steel structure to a 30x60x14 with 20’ column line spacing, free span shop building from a buddy in south Texas. The columns are 6” I beam, don’t know the lb per ft on them. The frame rafters are 12”x I think 13lb/ft at what I believe is a 4:12 roof pitch but it could be 3:12. Up here in OK I believe the roof snow load is 20psf for a flat roof and 115mph wind.
I feel like the columns may be a bit undersized but it would be easy to make new ones with 12x19lb I beam and use the 6” columns for some lean-Tos.
Anyone know if the roof rafters would be suitable for 30’ span and a snow load.
If I pick it up I would plan to install some 12x12 overhead doors centered on the end walls so there would be additional structure supporting the rafters.
And on column line spacing of 20’ are 6” C or Z purlins adequate or do they need to be larger? Most the buildings we work in here have 8”-10” purlins but the column lines are generally 25’+..
I know it’s kind of a vague question but I’d appreciate any help.
I feel like the columns may be a bit undersized but it would be easy to make new ones with 12x19lb I beam and use the 6” columns for some lean-Tos.
Anyone know if the roof rafters would be suitable for 30’ span and a snow load.
If I pick it up I would plan to install some 12x12 overhead doors centered on the end walls so there would be additional structure supporting the rafters.
And on column line spacing of 20’ are 6” C or Z purlins adequate or do they need to be larger? Most the buildings we work in here have 8”-10” purlins but the column lines are generally 25’+..
I know it’s kind of a vague question but I’d appreciate any help.