OT: Who is the resident Engineer here???

[TUSK]

I've got some "Framing/Construction" queries with which I could use some help....

[Pancho]

And?

[99jc]

He wants to build an alter for Saban to worship him at....make a few sacrifices.

[TUSK]

Nice 99!

thanks for responding...

I am building a sawmill shed out of rough sawn #1 grade pine. These are all "true" dimensions...

Posts to be set ~12' oc
Beams 3.5x10x~12
Rafters (~12' span) 2x8x12 48" oc
Purlins (laid flat) 2x6x12 36" oc
Metal panels on top w/ 10#Dead/20#Live Loads

I'm most concerned on the sizing/centers on the rafters... that seems like a smallish rafter for such a big spacing.... Should I go to a 3x6, 4x6x12? Maybe reduce to 36" oc?

I can't find a span table online and don't have the ENG skilz to figure loads...

ETA - I'd rather use fewer, bigger timbers than more, smaller timbers....

Pancho, I sent this via PM, as well...

[Gutter Cobreh]

Nice 99!

thanks for responding...

I am building a sawmill shed out of rough sawn #1 grade pine. These are all "true" dimensions...

Posts to be set ~12' oc
Beams 3.5x10x~12
Rafters (~12' span) 2x8x12 48" oc
Purlins (laid flat) 2x6x12 36" oc
Metal panels on top w/ 10#Dead/20#Live Loads

I'm most concerned on the sizing/centers on the rafters... that seems like a smallish rafter for such a big spacing.... Should I go to a 4x6x12? Maybe reduce to 36" oc?

I can't find a span table online and don't have the ENG skilz to figure loads...

Pancho, I sent this via PM, as well...

Pancho - please also let him know how much meth it would take to blow said roof off should an accident occur. He doesn't care about span, he's needing info for his one of a kind "meth/moonshine shed"

[TUSK]

Pancho - please also let him know how much meth it would take to blow said roof off should an accident occur. He doesn't care about span, he's needing info for his one of a kind "meth/moonshine shed"

3298

[Coach34]

Damn- that double wide gonna look fancy when you add that. I thought you were content when you got the wooden steps to the door built

[parabrave]

He wants to build an alter for Saban to worship him at....make a few sacrifices.

Ouch well he does live way down in a holler/ I hope you got the lumber or are you going to mill it yourself.

[dawgoneyall]

Damn- that double wide gonna look fancy when you add that. I thought you were content when you got the wooden steps to the door built

Doubt he has a double wide...more like a 1959 Airstream....but they are nice.

[TUSK]

Ouch well he does live way down in a holler/ I hope you got the lumber or are you going to mill it yourself.

I bought said sawmill back when the lumber prices skyrocketed.

[OLJWales]

TUSK did us a solid on the English Bulldog.

Return it. If it was up my alley, I'd be on it.

[Pancho]

Nice 99!

thanks for responding...

I am building a sawmill shed out of rough sawn #1 grade pine. These are all "true" dimensions...

Posts to be set ~12' oc
Beams 3.5x10x~12
Rafters (~12' span) 2x8x12 48" oc
Purlins (laid flat) 2x6x12 36" oc
Metal panels on top w/ 10#Dead/20#Live Loads

I'm most concerned on the sizing/centers on the rafters... that seems like a smallish rafter for such a big spacing.... Should I go to a 3x6, 4x6x12? Maybe reduce to 36" oc?

I can't find a span table online and don't have the ENG skilz to figure loads...

ETA - I'd rather use fewer, bigger timbers than more, smaller timbers....

Pancho, I sent this via PM, as well...

Go 24" oc with the rafters and you'll be fine.

[FISHDAWG]

Go 24" oc with the rafters and you'll be fine.

should be ok with this ... the question is what is the decking material ? Purlins at 36"oc sounds like tin roofing which isn't that heavy but if you're using plywood then tighten that to 24" oc as well just to make sure you don't waste plywood

[State82]

Tusk, 48" spacing is too wide for the 2x8's at that span. 36" would be marginal. If you want to keep that spacing and you have access to 4x6's those would work for Grade 1 SYP.

[Lord McBuckethead]

Nice 99!

thanks for responding...

I am building a sawmill shed out of rough sawn #1 grade pine. These are all "true" dimensions...

Posts to be set ~12' oc
Beams 3.5x10x~12
Rafters (~12' span) 2x8x12 48" oc
Purlins (laid flat) 2x6x12 36" oc
Metal panels on top w/ 10#Dead/20#Live Loads

I'm most concerned on the sizing/centers on the rafters... that seems like a smallish rafter for such a big spacing.... Should I go to a 3x6, 4x6x12? Maybe reduce to 36" oc?

I can't find a span table online and don't have the ENG skilz to figure loads...

ETA - I'd rather use fewer, bigger timbers than more, smaller timbers....

Pancho, I sent this via PM, as well...

The spacing on the rafters and the purlins look to be incorrect.

The rafters should be on 24" centers and the purlins should be set at the span capacity of the metal roof panels which would completely depend on the the roof panel. If it were just corrogated metal, I would place those at 24" max as well.

Now, this is all rule of thumb information, I did not run calculations.

If you are interested, https://www.awc.org/codes-standards/calculators-software/spancalc

[trob115]

I bought said sawmill back when the lumber prices skyrocketed.

What mill did you get??

I am a wood turner and I'm extremely jealous you have a mill. I hope to get my own mill one day.

[trob115]

If we got any snow at all, I would suggest 18". 24" should suffice perfectly fine.

[parabrave]

Hey TUSK if you can. get the ICC Code book and it will have your span tables in the Framing section.

[TUSK]

Guys, I phrased my question poorly... I'm well versed in "conventional" framing span table with "standard", planed, dimensional #2 lumber. I've built several structures including the house I live in, now. (No, it's not a trailerhouse, nor a van down by the river:rolleyes:)...

This new project is to be a timber framed "equipment shed"... It'll be an open sided gable type, with no walls, insulation, roof decking, etc. Since I'm cutting my own material, I can mill the lumber as large as I like and I would prefer both the aesthetics (and the fewer pieces) of a "timber" frame type building.

Here's a cheesy MSPaint Drwg:

3300

Known Variables:
Beams will be 3.5 x 10 spanning 12' over 6x6 posts.
Purlins will be 2x6x12 & 3' oc lying flat.
Metal panels will be screwed to the purlins.

I'd prefer my Rafters to be 48" oc. (36" at the closest).

I found an old table that gives some data, but I don't know how to decipher it.

3299

If I am reading this correctly, a 3x6 rafter will span 10'... But the table says it's for 60#psf live load....and I only need to hold up about 10/20# live/dead.

In summary, the rafter needs to span ~12' and be 36-48" oc. It can be 3x6, 4x6, 3x8, 4x8 whatever....

Thanks to all that have chimed in and I apologize to the mods for cluttering up the MB....

also, the sawmill is a Chinese knock off of a Woodland Mills... Called a "Wood Esse" or "Rima"....

[Percho]

3298

Just re-watched the whole thing. It's great.

[parabrave]

Hey TUSK I got the best Solution for you. I hear there is a pretty good engineering school about 40 miles west of you that you can attend and get some learning done! You're even close enough to go home every day and tend the still.

[TUSK]

Hey TUSK I got the best Solution for you. I hear there is a pretty good engineering school about 40 miles west of you that you can attend and get some learning done! You're even close enough to go home every day and tend the still.

I sooooo wish I'd gotten and ENG degree in lieu of ACC....

ugh....

[OLJWales]

Hey TUSK I got the best Solution for you. I hear there is a pretty good engineering school about 40 miles west of you that you can attend and get some learning done! You're even close enough to go home every day and tend the still.

Lol. Y'all make sure this contraption ain't a cover for a hydroponics lab for weed patch expansion!

[Apoplectic]

Nice 99!

thanks for responding...

I am building a sawmill shed out of rough sawn #1 grade pine. These are all "true" dimensions...

Posts to be set ~12' oc
Beams 3.5x10x~12
Rafters (~12' span) 2x8x12 48" oc
Purlins (laid flat) 2x6x12 36" oc
Metal panels on top w/ 10#Dead/20#Live Loads

I'm most concerned on the sizing/centers on the rafters... that seems like a smallish rafter for such a big spacing.... Should I go to a 3x6, 4x6x12? Maybe reduce to 36" oc?

I can't find a span table online and don't have the ENG skilz to figure loads...

ETA - I'd rather use fewer, bigger timbers than more, smaller timbers....

Pancho, I sent this via PM, as well...

There?s a subreddit for these type ??