40 M TRUSS
40 M TRUSS
(OP)
I HAVE 40 M PRATT TRUSS IN A ROOF SYSTEM AND I NEED SOME HELP WHERE TO PUT THE SPLICES
THE MAXIMUM LENGTH OF HOT ROLLED SECTION IS 12 M SO I NEED 3 POINTS OF SPLICES IN THE TOP AND BOTTOM CHORD
WHERE IS THE BEST 3 POINTS TO PUT THE SPLICES
THNX FOR ALL
THE MAXIMUM LENGTH OF HOT ROLLED SECTION IS 12 M SO I NEED 3 POINTS OF SPLICES IN THE TOP AND BOTTOM CHORD
WHERE IS THE BEST 3 POINTS TO PUT THE SPLICES
THNX FOR ALL






RE: 40 M TRUSS
RE: 40 M TRUSS
The top and bottom chords consisted of HSS members, I think they were 10"x10". The middle diagonals sloped downward and away from the splice point (i.e. compression members under uniform load). This meant that the bottom chords had no web members cluttering up the tension splice.
Both chords were fitted with square end plates which were field bolted together. The bolts were in a square pattern around the HSS. The top chord splice was in compression under snow load, so the bolts were designed to take uplift tension and shear due to unbalanced snow load (which did not occur simultaneously).
End plates on the bottom chord splice were designed for prying action and the bolts were A490 bolts.
BA
RE: 40 M TRUSS
RE: 40 M TRUSS
RE: 40 M TRUSS
Dik
RE: 40 M TRUSS
RE: 40 M TRUSS
Local top chord bending can be avoided by ensuring that each joist bears at a truss panel point. The Warren configuration with a vertical member at each bottom chord panel point is likely the most economical for such a long span.
With 12m maximum length of material, chords can be shop spliced at or near the quarter and three quarter points with a field splice at midspan.
BA
RE: 40 M TRUSS
Michael.
Timing has a lot to do with the outcome of a rain dance.