Type “B” (Wide Rib) Corrugated Metal Roof Deck

Type B (Wide Rib) Roof Deck Description:

Type B (Wide Rib) deck provides maximum structural load capacity through an efficient profile design and allows the use of 1 inch thick rigid insulation boards. The side lap of this product permits easy installation and its nest-able feature eliminates the need for die-set ends.

Certified by Steel Deck Institute

Approved by Factory Mutual System

Classified by Underwriters Laboratories Inc.

Type “B” (Wide Rib) Roof DeckB-Deck Speciifications

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Section Properties (Per Ft. of Width)

Deck Gage Design Thickness In. Weight Lbs. Per Sq. Ft. “I” in. “Sp” in. “Sn” in.
Ptd. Galv.

22

0.0295 1.70 1.90 0.165 0.192 0.198

20

0.0358 2.07 2.25 0.214 0.247 0.256

18

0.0474 2.80 2.95 0.308 0.336 0.347

16

0.0598 3.30 3.40 0.401 0.431 0.436

Uniform Total (Dead & Live) Load – Lbs. Per Sq. Ft.

Span Condition Gage Span, Ft.-in.
5-0 5-6 6-0 6-6 7-0 7-6 8-0 8-6 9-0 9-6 10-0

Simple

22 96 75 60 49 41 35 31
20 122 94 74 61 50 43 37 32
18 171 131 103 83 68 57 49 42 37 33 30
16 167 131 105 86 72 61 52 46 40 36

Two

22 104 86 72 61 53 46 40 36 32
20 135 111 93 79 68 60 52 46 41 37 33
18 183 151 127 108 93 81 71 63 56 50 45
16 190 159 136 117 102 89 79 71 63 57

Three or More

22 130 108 90 77 66 58 50 43 38 33 30
20 168 139 117 99 86 72 61 53 46 40 36
18 189 158 135 116 100 84 72 62 54 48
16 199 170 146 127 107 90 78 68 59

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