Please see my previous thread, "Fasteners to Round Top Chord of OWSJ"
(How do i link to another thread? I tried the "Help" button, but, did not find applicable instrcutions - Thank you!)
Unless i find a practical solution to anchoring to round top chord OWSJ's, i am considering anchoring to the roof deck.
Research discovered that TEK3 (TEK screws with a #3 drill point and threads at 14 tpi) are only available at limited lengths of 4" max. Since we need to travel through 4" of rigid insulation, I need 6-8" screws to bite into the existing roof deck. The TEK screws at 6-8" length are TEK5 with 28 tpi. There are no load tables that i can find that allow a TEK5 to anchor to a steel gage thinner than 16 gage.
Is there a way to calculate pullout of a 28 tpi in 22 or 24 gage roof deck?
Other suggestions?
Thank you!
(How do i link to another thread? I tried the "Help" button, but, did not find applicable instrcutions - Thank you!)
Unless i find a practical solution to anchoring to round top chord OWSJ's, i am considering anchoring to the roof deck.
Research discovered that TEK3 (TEK screws with a #3 drill point and threads at 14 tpi) are only available at limited lengths of 4" max. Since we need to travel through 4" of rigid insulation, I need 6-8" screws to bite into the existing roof deck. The TEK screws at 6-8" length are TEK5 with 28 tpi. There are no load tables that i can find that allow a TEK5 to anchor to a steel gage thinner than 16 gage.
Is there a way to calculate pullout of a 28 tpi in 22 or 24 gage roof deck?
Other suggestions?
Thank you!
