Cornerstone Specialty Wood Products, LLC® | More than Mezzanine Floors

Industrial Platform Decking: B Deck and N Deck



Corrugated Metal Decking: B-Deck & N-Deck
Corrugated Metal Decking

Cornerstone Specialty Wood Products, LLC® provides corrugated metal decking products in a variety of profiles, thicknesses, yield strengths and finishes. The Engineers at Cornerstone Specialty Wood Products will help you optimize sizes, runs, steel thicknesses, corrugated profiles, and beam spacings, 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.

Metal corrugated floor decking is available with a bright white underside for excellent light reflectivity for use on pick module flooring, mezzanines, conveyor platforms, equipment platforms and other industrial platform areas where lightening is critical. Gray primer, galvanized and stainless steel are 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. See the charts below, for allowable uniform total load span per square foot.

Mezzanine B Deck 1.5" Allowable Uniform Load (PSF)/Loads That Produce L/240 Deflection

Number of Spans Gauge MIN YIELD (KSI) 36" 42" 48" 54" 60" 66" 72" 78" 84" 90"
Single 20 60 565/462 415/291 318/195 251/137 203/100 168/75 141/58 120/45 104/36 90/30
Single 18 60 792/658 582/414 445/278 352/195 285/142 236/107 192/82 169/65 145/52 127/42
Single 16 33 575* 422* 323* 255* 207/186 171/140 144/108 122/85 106/68 92/55
Double 20 60 563* 418* 322* 256* 208* 172* 145* 124/116 107/93 93/75
Double 18 60 788* 586* 452* 359* 292* 242* 204/202 174/159 150/127 130/103
Double 16 33 552* 410* 317* 252* 205* 170* 143* 122* 105* 92*
Triple 20 60 692* 516* 399/388 317/273 258/199 214/149 180/115 154/91 133/72 116/59
Triple 18 60 966* 722* 558/534 445/375 362/273 300/205 253/158 216/124 187/100 163/81
Triple 16 33 676* 505* 391* 311* 254* 210* 177* 152* 131/128 114/104

NOTE: * Allowable Uniform Load shown only, L/240 Exceeds Allowable Load

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)/Loads That Produce L/240 Deflection

Number of Spans Gauge MIN YIELD (KSI) 84" 90" 96" 102" 108" 116" 120" 126" 132" 138"
Single 20 60 219/160 191/130 168/107 149/89 133/75 119/64 108/55 98/47 89/41 81/36
Single 18 60 325/236 283/192 249/158 220/132 196/111 176/94 159/81 144/70 132/61 120/53
Single 16 40 290* 253* 222* 197/186 175/157 157/133 142/114 129/99 117/86 107/75
Double 20 60 224* 209* 189* 168* 150* 135* 122* 111* 101* 92*
Double 18 60 349* 304* 268* 238* 213* 191* 173* 157* 143* 131*
Double 16 40 305* 266* 234* 208* 186* 167* 151* 137* 125* 114*
Triple 20 60 255* 238* 223* 208/192 186/161 167/137 151/118 137/102 125/88 115/77
Triple 18 60 430* 378* 333/323 295/269 264/227 237/193 215/165 195/143 178/124 163/109
Triple 16 40 378* 330* 291* 258* 231* 207* 187* 170* 155* 142*

NOTE: * Allowable Uniform Load shown only, L/240 Exceeds Allowable Load

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