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#39589 - 06/26/04 08:46 AM self tapping screws
CRM Offline
Member
Registered: 02/29/04
Posts: 74
Loc: Alberta Canada
I have a question on securing conduit to metal Q decking used in commercial buildings. I usually use self tapping sheet metal screws. The last job we were on concrete was poured on top of the Q decking. What type of screw do you use that first has to go through metal then through concrete. Thanks for any help.
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#39590 - 06/26/04 09:24 AM Re: self tapping screws
DougW Offline
Member
Registered: 06/08/03
Posts: 1143
Loc: North Chicago, IL
I've been a pretty big fan of the Tapcon system

[url to follow]

It's easy, quick, and the carbide tip should be able to punch through the decking to anchor in the 'crete above.
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#39591 - 06/26/04 09:38 AM Re: self tapping screws
DougW Offline
Member
Registered: 06/08/03
Posts: 1143
Loc: North Chicago, IL
I've been a pretty big fan of the Tapcon system
http://www.itwbuildex.com/tapcon.htm

It's easy, quick, and the carbide tip should be able to punch through the decking to anchor in the 'crete above.
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#39592 - 06/26/04 09:47 AM Re: self tapping screws
CRM Offline
Member
Registered: 02/29/04
Posts: 74
Loc: Alberta Canada
Thanks Doug for the help, that looks like the masonary screws I'm going to buy.
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#39593 - 06/28/04 05:06 PM Re: self tapping screws
Joey D Offline
Member
Registered: 10/10/03
Posts: 259
Loc: Arlington MA U.S.
I use a Hilti and just drill thru the decking then use the proper anchor for the job, plastic or steel a drop in
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#39594 - 06/29/04 10:02 AM Re: self tapping screws
GETELECTRIC Offline
Member
Registered: 10/22/03
Posts: 172
Loc: toronto canada
I bang the corner of the flute with a hammer
which loosens up the concrete an a sef tapping screw will go right in.
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