[SML] Torqueing truss

[Kristi R-C]

 Ope! Arpril 1,2,3 - Monday through Wednesday early afternoon.
    On Friday, March 1, 2024, 06:03:51 PM CST, Kristi R-C via Stagecraft <stagecraft at theatrical.net> wrote:  
 
  Not to my knowledge. Patrick usually cites some mettalurgy guru or ClarkReder for enginering facts, but I don’t have that in my class notes. 
Speaking of which - MODtruss has a training class April 1,2, at their headquarters in Allenton, WI.  When I talked with them this week there were still a few seats remaining. 
Excellent, Free training that goes over their product line as well as truss inspections/maintenance, fundamentals of structural design, and basic engineering principles. (And if I can do that math, you can, too!) 
Tell Monica I sent you: +1.844.663.8787 
Kristi R-C
    On Friday, March 1, 2024, 11:17:21 AM CST, Bruce Cooper via Stagecraft <stagecraft at theatrical.net> wrote:  
 
 This seems dubious - Grade 8 Bolts have a Yield Strength of 130kpsi.

  For a standard 5/8" bolt this translates to a dry tightening torque of 
~220lb-ft or a lubricated tightening torque of around half that.

  Does MODTruss recommend lubricated fasteners?  

:Bruce Cooper

On Friday, March 1, 2024 2:24:03 AM CST Kristi R-C via Stagecraft wrote:
>  My notes say “80 lbs torque - Grade 8 bolts can be reused. 150 can not as
> it deforms the metal”  That’s from MODtruss dealer training last August.
> Kristi R-C





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