Jim Timber
1/4 bubble off
I'm trying to figure out how to support a 24' wide floor in my new shop. The frame will be traditional heavy timber (8x8"), so I'd like to stick with timber instead of doing stick trusses. The problem I'm encountering is no one has any engineering data for this stuff, or at least none they're willing to share publicly.
I don't have any books on the subject yet, since I don't even have my mill built right now. But since it's cold outside and I have 3 months of winter remaining, I figured I'd start working out the new monitor barn's design.
Are there resources out there I've failed to dig up with google searching? Some kind of calculator that'll give me data I can plug into another software program for double chord truss design? Everything I've found, or has been suggested to me, is for 2x and maxes out at 12" widths. 2x12" oak maxes out at 19'6" for a joist.
I want to put two trusses across 24' on 10' centers and then string joists between them for holding the floor sheathing (or boards). One of these trusses will only support floor on one side, and the other side will be open to the center of the building. The other truss will hold joists on both sides and it's opposite side will be the outer wall of the building. If that makes sense.
Putting a steel I-beam in (I need two such members to support this floor) seems sacrilegious. I'd rather create a truss out of heavy timber to carry the load instead, but I'm not finding any way to run the numbers.
I'll be using clear red oak heart wood. I have plenty of trees to choose from, so getting good straight wood shouldn't be difficult.
I've suggested (2) 8x8"x24' cants coupled together with 6x6x8" blocking on 24" centers which would make a 24" tall truss. Does anyone here have an idea what the bending stress of such a member would be? Or where I could find some data on how to calculate it?
Any help would be greatly appreciated!
I don't have any books on the subject yet, since I don't even have my mill built right now. But since it's cold outside and I have 3 months of winter remaining, I figured I'd start working out the new monitor barn's design.
Are there resources out there I've failed to dig up with google searching? Some kind of calculator that'll give me data I can plug into another software program for double chord truss design? Everything I've found, or has been suggested to me, is for 2x and maxes out at 12" widths. 2x12" oak maxes out at 19'6" for a joist.
I want to put two trusses across 24' on 10' centers and then string joists between them for holding the floor sheathing (or boards). One of these trusses will only support floor on one side, and the other side will be open to the center of the building. The other truss will hold joists on both sides and it's opposite side will be the outer wall of the building. If that makes sense.
Putting a steel I-beam in (I need two such members to support this floor) seems sacrilegious. I'd rather create a truss out of heavy timber to carry the load instead, but I'm not finding any way to run the numbers.
I'll be using clear red oak heart wood. I have plenty of trees to choose from, so getting good straight wood shouldn't be difficult.
I've suggested (2) 8x8"x24' cants coupled together with 6x6x8" blocking on 24" centers which would make a 24" tall truss. Does anyone here have an idea what the bending stress of such a member would be? Or where I could find some data on how to calculate it?
Any help would be greatly appreciated!