Can you send me the file? That link isn't working - either the image isn't available, or you don't have your sharing setup correctly for others to see it.

Mike

Mike,

Could you post the sketch for everybody to see? I like to see as many opinions on this before I continue my analysis.

Thanks.

Heres a link:
https://picasaweb.google.com/lh/photo/tw9y7PNm607GeEzcQvHJEA?feat=directlink

And the pic:

Scott, I hope I'm not jumping to far with an assumption but previously you said trib of 28 x 24 and building size 28 x 24, so I'm looking for tributary area of 14 x 24, thus bringing down the load by half.

Roger - I think I had meant tributary width of 14', 28' building width. Frame to span 24'. The loads I show on the drawing are factored (Limit States Design) and should reflect 14' trib (approx).

JOINT A - 26,500 lbs T
JOINT B - 30,500 lbs C
JOINT D - 3000 lbs T

I wanted to show these loads to show magnitude. I can post more accurate numbers tomorrow if you want more detail. Mike came up with a few great strategies using steel connections for my high tensile loads.

Scott,

Your design looks very similar to the Queen truss w/steel rods found in many clear span dairy barns here in the midwest. Although there are no Queen posts in these barns just Queen rods.

You might be able to eliminate the Queen posts (that are in tension)in your upper truss design and instead add a shorter rod that is dedicated to the suspension of the truss lower cord, and then have a longer rod that runs parallel to the shorter one to suspend the lower floor system. I would probably hang both rods from the same point or plate/ washer. The truss diagonals would then need to either be notched into the top-cord, or have an extra beam laminated to the underside of the top-cord that the diagonals then compress against.

Good luck,

Rooster

Interesting - thanks Craig.