How Florida Structural Standards Apply to Type B Metal Deck
The Florida Building Code sets the loads and adopts the national steel deck standards by reference, so Type B is designed to SDI and AISI rules like any steel deck. Our 1.5" Type B tables follow ANSI/SDI RD-2017, SD-2022, C-2017, NC-2017 and AISI S100. The engineer of record checks the deck against your loads and supports. We supply it to the drawings.
What each standard covers
The code's structural chapters set dead, live, wind and seismic loads. The SDI roof deck and steel deck standards cover the deck itself, and AISI S100 covers cold-formed steel design. Our catalog lists which standards each table follows.
Compatibility checks in commercial work
- Supports: joists, beams or purlins at spacing that fits the deck span tables.
- Bearing: web crippling values in the catalog assume 1.5", 2" or 3" bearing.
- Attachment: fastener type matched to the support (welds on heavier steel, screws on light gauge).
- Diaphragm: the deck often braces joists and carries lateral load to the frames, so its pattern ties to the lateral design.
- Roofing: the insulation and membrane approval may require a minimum gauge.
Getting it into the submittal
Submittals usually need the deck data sheet and shop drawings. Ask us for the catalog pages and the documentation your permit requires, and send your plans for a quote.
Standards cited in the 1.5" Type B catalog data
| Standard | Used for |
|---|---|
| ANSI/SDI RD-2017 | Roof deck design and construction spans |
| ANSI/SDI SD-2022 | Steel deck design and construction spans |
| ANSI/SDI C-2017 and NC-2017 | Section properties and flexural strength |
| AISI S100-2012 and S100-2016 | Cold-formed steel strength |
Related Questions
Does Type B deck brace the steel joists?
Properly attached roof deck commonly provides lateral support to joist top chords and transfers roof loads into the lateral system. That only works if the deck is fastened as designed and the diaphragm is sized for it. The engineer of record confirms the bracing role and the fastener pattern needed to deliver it.
Is Type B compatible with mixed support types?
Yes, a roof can have the deck on joists, beams and purlins, but the fasteners change with support thickness and the end bearing must work at each. Call out the connection at each support type on the drawings so the erector installs the right one. We can quote screws for light-gauge supports.