Old Timers - Who Manufactured this Space Truss (3d) Bar Joist PEMB system?

[structuralengr89]

Does anyone know who would have manufactured this system from the attached photos?

[ul]Building was constructed in the late 80s to early 90s[/ul]

[ul]System is some type of PEMB braced system...there were no moment frames...one direction of the building was braced and the other direction of the building CMU shear walls were utilized[/ul]

[ul]The V shaped bar joist system appeared to be screwed together in the field[/ul]


I was impressed with the system in terms of the stiffness you would have for the roof diaphragm versus a typical 1 story PEMB.

 

[structuralengr89]

Additional Photo

 

[Wallache]

Looks like a Butler Delta Joist system. The only one I have seen was built in the mid 90's.

 

[JAE]

Check this thread out: thread507-376091



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[structuralengr89]

Thank you Wallache and JAE!!!