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Type F Deck (Intermediate Rib)

Roofing & Siding

Type F Intermediate Rib is an older deck profile still widely used, particularly where roofs must nest with an existing F deck roof. All attributes that apply to B deck also apply to F deck. Load carrying capabilities for Type F deck are less than Type B deck.

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Type F 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 1.58 1.61 0.1307 0.1523 0.1307 0.1419
20 .0358 1.98 2.04 0.1689 0.1851 0.1625 0.1728
18 .0474 2.60 2.70 0.2412 0.2458 0.2218 0.2285
16 .0598 3.10 3.20 0.3109 0.3109 0.2851 0.2875
Section Properties calculated in accordance with AISI specifications.

Available Type F Deck

Gage Span

 

Cond
Max SDI

 

Const Sp
Uniform Total Load in Pounds Per Square Foot (Dead and Live)
5’-0” 5’-6” 6’-0” 6’-6” 7’-0” 7’-6” 8’-0” 8’-6” 9’-0” 9’-6” 10’-0”
22 One 5’-2” 70 58 49 41 35 30          
20   6’-0” 87 72 60 50 42 36 31        
18   7’-1” 119 98 82 68 56 48 41 36 32    
16   8’-1” 153 126 105 85 70 58 50 43 38 34 30
22 Two 6’-2” 76 63 53 45 39 34          
20   7’-1” 92 76 64 54 47 41 36 32      
18   8’-4” 122 101 85 72 62 54 47 42 37 33 30
16   9’-5” 154 127 107 91 78 68 60 53 47 42 38
22 Three or More 6’-2” 95 79 66 56 48 42 37 33      
20   7’-1” 115 95 80 68 59 51 45 40 35 32  
18   8’-4” 153 126 106 90 78 68 59 53 47 42 38
16   9’-5” 192 159 134 114 98 85 75 66 59 53 48
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

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