Type A Deck (Narrow Rib) – 36" Cover
Type A Deck is mostly used as a retrofit to match existing deck. This metal decking, also known as narrow rib deck, is produced in galvanized steel. 30” Cover also available.
Type A Deck Properties
Section Properties (Fy=33 ksi)
| Gage | Design Thickness | Weight (psf) Ptd | Weight (psf)Galv | Ip(In4) | In(In4) | Sp(In3) | Sn(In3) |
| 22 | .0295 | 1.65 | 1.70 | 0.1463 | 0.1463 | 0.128 | 0.1297 |
| 20 | .0358 | 2.09 | 2.15 | 0.1779 | 0.1779 | 0.1564 | 0.1574 |
| 18 | .0474 | 2.71 | 2.80 | 0.2366 | 0.2366 | 0.2083 | 0.2083 |
| 16 | .0598 | 3.30 | 3.40 | 0.2998 | 0.2998 | 0.2627 | 0.2627 |
AVAILABLE Type A Deck
| Gage | Span Cond | Max SDI Const Sp | Uniform Total Load in Pounds Per Square Foot (Dead and Live) | ||||||||||||||||||||||||
| 4’-0” | 4’-6” | 5’-0” | 5’-6” | 6’-0” | 6’-6” | 7’-0” | 7’-6” | 8’-0” | 8’-6” | 9’-0” | |||||||||||||||||
| 22 | One | 5’-5” | 108 | 85 | 69 | 57 | 48 | 41 | 35 | 30 | |||||||||||||||||
| 20 | 6’-0” | 131 | 104 | 84 | 69 | 58 | 49 | 43 | 37 | 32 | |||||||||||||||||
| 18 | 6’-11” | 174 | 137 | 111 | 92 | 77 | 65 | 54 | 46 | 39 | 34 | 30 | |||||||||||||||
| 16 | 7’-9” | 173 | 140 | 116 | 97 | 80 | 66 | 55 | 47 | 41 | 36 | ||||||||||||||||
| 22 | Two | 6’-4” | 108 | 85 | 69 | 57 | 48 | 40 | 35 | 30 | |||||||||||||||||
| 20 | 7’-0” | 131 | 103 | 84 | 69 | 58 | 49 | 42 | 37 | 32 | |||||||||||||||||
| 18 | 8’-1” | 174 | 137 | 111 | 92 | 77 | 66 | 56 | 49 | 43 | 38 | 34 | |||||||||||||||
| 16 | 9’-1” | 173 | 140 | 116 | 97 | 83 | 71 | 62 | 54 | 48 | 43 | ||||||||||||||||
| 22 | Three or More | 6’-4” | 135 | 106 | 86 | 71 | 60 | 51 | 44 | 38 | 33 | ||||||||||||||||
| 20 | 7’-0” | 164 | 129 | 105 | 86 | 73 | 62 | 53 | 46 | 41 | 36 | 32 | |||||||||||||||
| 18 | 8’-1” | 172 | 139 | 115 | 96 | 82 | 71 | 62 | 54 | 48 | 43 | ||||||||||||||||
| 16 | 9’-1” | 175 | 145 | 122 | 104 | 89 | 78 | 68 | 60 | 54 | |||||||||||||||||
| Notes: 1. Load tables are calculated using section properties based on the steel design thickness shown in the Steel Deck Institute (SDI) design manual. 2. Loads shown in the shaded areas are governed by the live load deflection not in excess of 1/240 of the span. A dead load of 10 psf has been included. |
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