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Posted by 3D Peruna on March 30, 2007, 6:23 pm
Kevin Fishburne wrote:
> I'm putting together a design draft of a home for later submission to
> an architect, and I'd like it to be as spot-on as possible without
> having to become an architect myself in the process.
The architect just needs some basic drawings of your ideas...
The home is
> primarily concrete block and heavy timber frame and I'm having some
> issues with laying the CMU courses such that they're structurally
> sound. I'm using 3dsmax to model it.
You're going way to crazy about it. And 3DS Max is a terrible tool for
what you're doing (I've done lots of 3D Stuff and Max is pretty weak at
architectural modeling).
The CMU pictured are standard
> 8x8x16 split-face blocks using stretcher bond. Here's a link to the
> latest draft:
>
> http://home-and-garden.webshots.com/photo/2116492180100974754zTVbAZ
>
> My problem is how to deal with T intersections and in general places
> that will require a half block to be used repetitively through the
> courses. I understand there are steel ties that can bind a wall butted
> to another wall in a T intersection if the blocks between them can't
> overlap. I don't know where the half blocks should be placed as to not
> affect the structural integrity of the wall though. I've heard corners
> are bad places.
I've never worried about it. If it's a problem, my structural engineer
figures it out. If it's not a problem, the mason figures it out.
You're wasting your own time doing stuff you don't need to do.
> Does anyone have any suggestions as to how I can better design the
> courses, or know or any reference material (online or in print) that
> has good information about the structural engineering principles of
> concrete masonry? Thanks all.
If you're using standard CMU sizes, then figure 8" W x 16" L x 8" H for
your coursing (it's actually smaller, but with mortar, it ends up being
that). If you use those dimensions for your modules (a 16" module works
well), then you'll be OK. But you're still worrying about stuff you
don't need to worry about.
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