Cornerstone Specialty Wood Products, LLC | More than Mezzanine Floors

Corrugated Metal Decking: B Deck & N Deck


Corrugated Metal Decking Overview

Product Overview Image

Corrugated Metal Deck Overview Image
Corrugated Metal Decking

Cornerstone Specialty Wood Products, LLC provides layout and design assistance with cost competitive products, and numerous metal decking options for structural metal platforms, pick module flooring or pallet racks. Whether you need B Deck or N Deck our Engineering Team will take the guesswork out of your layout designs and will optimize sizes, runs, steel gauges of corrugated, and beam spacing, thus saving you time and money. To assist with the ease of installation we can even supply pre-punched B Deck for use with our Invisi-Loc® underside fastening system.

Corrugated metal deck products are available in a variety of gauges and finishes. A bright white underside is available for excellent light reflectivity, but gray primer, galvanized or stainless steel is also available. We recommend that a minimum of 20 gauge metal B Deck be used on all ResinDek® flooring projects (with the exception of Xspan®) and a minimum of 18 gauge when live and dead pallet jack loads exceed 2,500 lbs. or greater. See the charts below, for allowable uniform total load span per square foot.

Mezzanine B Deck 1.5" Allowable Uniform Load (PSF)(33KSI)

Number of Spans Gauge 36" 42" 48" 54" 60" 66" 72" 78" 84" 90"
Single 20 352 259 198 157 120 92 73 - - -
Single 18 400 352 270 213 167 128 101 81 - -
Single 16 400 400 342 269 212 162 127 102 84 70
Double 20 349 260 200 159 129 107 93 79 - -
Double 18 400 348 269 213 174 144 123 104 90 -
Double 16 400 400 344 273 222 183 154 131 113 99
Triple 20 400 319 247 197 160 133 116 99 - -
Triple 18 400 400 331 264 215 179 153 131 113 -
Triple 16 400 400 400 340 277 229 193 164 141 123

B Deck Physical Properties

Gauge Thickness (in) Weight (lb/ft2)
Painted Galvanized
20 0.0358 2.1 2.2
18 0.0474 2.8 2.9
16 0.0598 3.4 3.5


B Deck Image


Mezzanine N Deck 3.0" Allowable Uniform Load (PSF)(40KSI)

Number of Spans Gauge 84" 90" 96" 102" 108" 116" 120" 126" 132" 138"
Single 20 159 138 121 108 96 86 78 70 64 59
Single 18 224 195 171 152 135 122 110 100 91 83
Single 16 290 253 222 197 175 157 142 129 117 107
Double 20 149 140 131 118 106 95 86 78 71 65
Double 18 241 211 186 165 147 132 119 108 99 90
Double 16 305 266 234 208 186 167 151 137 125 114
Triple 20 170 159 149 140 131 118 107 97 89 81
Triple 18 287 261 230 205 183 164 148 135 123 113
Triple 16 378 330 291 258 231 207 187 170 155 142

N Deck Physical Properties

Gauge Thickness (in) Weight (lb/ft2)
Painted Galvanized
20 0.0358 2.50 2.50
18 0.0474 3.20 3.30
16 0.0598 4.10 4.20


N Deck Image