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Re: Connecting to Existing Metal Roof Deck

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....  If it is conventional metal deck that you can match
>profile, match it and lap the joint.


I don't see how you can lap the decking except either by:
1.  Placing the new decking immediately below the existing - the supporting
joist prevents this
or
2.  Removing part of the existing concrete fill in order to lap the new deck
over the existing.  Can the existing concrete be sucessfully removed?

David Finley, P.E.