What is Type A roof deck?
Type A roof deck dimensions and specs
![Type A steel roof deck and metal deck](https://www.nettlescs.com/wp-content/uploads/2023/08/Type-A-steel-roof-deck-and-metal-deck.png)
Industry designations
- Type A Deck
- Narrow Rib
- NR
Gauge
- 22
Finishes
- Primed Gray (protects the base steel in a properly enclosed, dry environment)
- G60 Galvanized (protects the base steel in more aggressive interior environments or areas where greater corrosion resistance is required)
Maximum construction span
No. of Spans | Deck Type | Max Const. Span |
---|---|---|
1 | A22 A20 A18 | 3′-9″ 4′-8″ 6′-0″ |
2 or more | A22 A20 A18 | 4′-7″ 5′-3″ 6′-0″ |
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