Toggle Bolts for Fall Protection System into a Metal Deck
Toggle Bolts for Fall Protection System into a Metal Deck
(OP)
I am working on a project for work. The system we are using for the fall protection is Latchkeys but I am having trouble calculating the point loads on the 4 toggle bolts being inserted into a metal deck that has an I=0.959 in4/ft St=0.567 in3/ft
and Sb= 0.492 in3/ft. The decking is 3" and 20 gauge. Is there anyone that may be bale to help me out.
and Sb= 0.492 in3/ft. The decking is 3" and 20 gauge. Is there anyone that may be bale to help me out.





RE: Toggle Bolts for Fall Protection System into a Metal Deck
RE: Toggle Bolts for Fall Protection System into a Metal Deck
RE: Toggle Bolts for Fall Protection System into a Metal Deck
Is you boss willing to bet someones life, and his job on your calculations?
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
RE: Toggle Bolts for Fall Protection System into a Metal Deck
http://www.latchways.com/sites/default/files/PDF/L...
RE: Toggle Bolts for Fall Protection System into a Metal Deck
RE: Toggle Bolts for Fall Protection System into a Metal Deck
RE: Toggle Bolts for Fall Protection System into a Metal Deck
"The decking is 3" and 20 gauge."
"The only other calculation left is to figure out the pullout strength from the metal deck."
I'm picturing this -
http://leathermanlibrary.com/albums/ftp_uploads/IN...
despite the picture on page 7 here -
http://www.latchways.com/sites/default/files/PDF/L...
RE: Toggle Bolts for Fall Protection System into a Metal Deck
... but that doesn't tell you squat about the toggle bolts interacting with the thin steel sheet in the roof. The nice diagram suggests that the toggle bolts are loaded partially in shear, but there must be some tension.
In your position, I'd ask the anchor supplier for test results with photographs of an anchor installation similar to what you contemplate.
Mike Halloran
Pembroke Pines, FL, USA
RE: Toggle Bolts for Fall Protection System into a Metal Deck
Do it by test, make a dummy connection and get it tested. Even though some connections are done with a large number of self drilling screws and it looks like overkill, they are only as good as the worst installer.
B.E.
You are judged not by what you know, but by what you can do.
RE: Toggle Bolts for Fall Protection System into a Metal Deck
Neglect any benefit of the membrane or insulation....they are negligible.
Also, since this is a toggle bolt with no thread engagement in the deck, you are not looking for a "pullout" strength but a "pullover" strength...as if the head of a bolt were being pulled through the decking.
RE: Toggle Bolts for Fall Protection System into a Metal Deck
RE: Toggle Bolts for Fall Protection System into a Metal Deck
RE: Toggle Bolts for Fall Protection System into a Metal Deck