Subject:
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Re: Truss Joint Construction Details
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Newsgroups:
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lugnet.technic
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Date:
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Thu, 14 Mar 2002 22:15:32 GMT
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Viewed:
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925 times
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That was just an idea that struck my head, I dont have any plans to build a
brigde, but I want to build a crane someday...
"Thomas Avery" <thomas.avery@intec-hou.com> wrote in message
news:GszDHs.JyM@lugnet.com...
> In lugnet.technic, Jan-Tore Skålvik writes:
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?f=13558¨¨
> >
> > check this out!
> > I think this might help you alittlebit!
> > regards
> > jt
>
> Thanks JT!
>
> You can make things a little easier by not connecting all the member ends • at
> one common point (like you did with the diagonal connection). Also, take a
> look at Ross' truss bridge:
> http://www.lugnet.com/~469/projects/archbr
>
> The joints don't meet at a common point, or rather, you don't have perfect
> triangles. This weakens the structure as you now have a lot of bending
> moment in your members. However, considering Lego applications, this
> construction is relatively strong and should be adequate.
>
> For simple truss designs, where the top and bottom chords are parallel,
> construction is fairly simple:
> http://www.texbrick.com/ideas/truss/truss_ideas.html
>
> My white bridge has joints where up to 5 different members at different
> angles are joined together. This makes for a very difficult joint.
>
> One other note about "non-common center" joints, it makes any sort of
> calculation more difficult. For my white bridge, I calculated the geometry
> (and sized the members) prior to construction. The calculation was simple
> because the whole thing was just a series of triangles. If you're going to
> work with 4-sided elements, then it's a little more complicated.
>
> TJ
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Truss Joint Construction Details
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| (...) Thanks JT! You can make things a little easier by not connecting all the member ends at one common point (like you did with the diagonal connection). Also, take a look at Ross' truss bridge: (URL) joints don't meet at a common point, or (...) (23 years ago, 14-Mar-02, to lugnet.technic)
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