Structural Floor Metal Deck Profile

If you want to assign a custom metal deck profile to a structural floor then develop a profile family using Metric(Imperial) Profile.rft template. In order to get this profile family in the deck profile list you will have to change "Profile Usage" parameter to Slab Metal Deck inside family category dialogue box.

Load this new profile into your project and go to edit Structure of a structural floor. If you already have structural deck layer then select it and check deck profile list and you will find the new profile listed here. If you don't have structural deck layer then add it and select the new deck profile.