I've been asked to design/build a frame 45ftx90ft
The client has 24 pcs 10x10x45 and a huge whack of 8x8x10 and 4x8x10
This frame size is unfamilliar to me, I thought some of you might have experience with this and be willing to collaborate, either with ideas here in the forum, or contact me directly and possibly get paid.
thanks in advance for any ideas, here is the URL of the sketchup model:

http://sketchup.google.com/3dwarehouse/details?mid=84100c59dfb4a8a0114eb0ba21bec89c

I'd be glad to help, what do you need?

Hi Jim,
Main problem right now is the lower roof above the guy with the orange shirt. I put that short post and braces, but there needs to be a different structure there.
Another issue is the second floor, where the guy with the black suit is hanging out. The plan is to use a combination of 10x10's and engineered floor joists, beefy enough to hold up the peak of the roof.
The design is still pretty fluid, the client's previous house burnt down last month and the only sure idea so far is the split level main floor which will be concrete with in-floor heating.
Sorry if that's a bit vague, I hope to hone in asap.

Mark,

What if you just move the feet of the struts out to make a kingpost truss to hold up the purlin for the lower roof (above the guy in the orange shirt)? You could leave them with a natural curve, or use straight top chords. Then just lay common rafters over the top.

I like the braces running from the kp's to the ridge/purlin.

I'll send an invoice. :-)

Why? That looks fine for a common rafter roof system.
What do you see as a problem?


Ok, so that sounds like a good plan, what's the problem there?

Jim Rogers

thanks gabel, jim, I can see a truss of some kind is needed, roof pitch is low(5/12), so those posts in the lower roof are actually under 4 ft tall, and the span is 22.5 ft...
And, after meeting with the client today and talking about some ballpark pricing, the size is probably going to get smaller, so back to the drawing board, sound familliar?

Hey Mark, following along. Is this a residence? Those are long rooms at different levels. Just wondering what was the inspiration or the function behind the design? I'd like to hear more about the spaces.

Thanks

yes, mo, this is to be a residence. the shape more or less follows the shape of the site, the idea comes from the client and there will be partitions built to divide the spaces eventually.

here is version number five:

Mark, that looks good. I like how the second story walls are now the same height, the lengthened plates and ridges, a the continual line below the man in black. are the extensions now sitting proud of the walls? It seems you have a lot of options for the profile of the plates and ridges, ogee, cyma recta, etc... Those braces are cool. Would the staircase be straight going from the t-shirt guy to the man in black or perhaps in the middle? Thanks for sharing. I've got lots of questions about paneling if the future allows.

Thanks

cyma recta?? please enlighten me?
The plates/purlins/ridge will be as long as possible to support roof overhang. The lower plates will be cut back to the inside of the wall. I'm still not sure about this frame, it's sort of like platform framing at this point.
yes, the stairs are as you wrote.
At this point we are looking at roof panels, hopefully without rafters, and possibly wall panels.
Thank you for sharing.

Hi Mark, So does the ridge extend from interior to exterior? I am interested in how you would do this. How do you not sacrifice the envelope in that situation. If you could do this and have the horizontals exposed to the outside you could


one way or another.

yes, the ridge and purlins and top plates will have to be out in the elements. I think expanding foam does an ok job of sealing the timbers to the wall. what are your concerns around this?
I like the "Cavetto"