EXPANDED METAL GRATING LOAD DEFLECTION TABLES

Deflection testing was conducted by an independent testing laboratory.

Deflections shown in the shaded areas can be safely used at the discretion of the engineer; however, these deflections exceed 1/4".

GRATING

CLEAR

STYLE

COND.

SPAN

50

100

150

200

250

300

350

400

450

500

18"

.052

.105

.158

.211

.264

.317

.367

C

24"

.125

.250

.175

.500

2.0#

30"

.244

.489

CARBON STEEL

36"

.422

18"

.049

.099

.147

.196

.245

.294

.343

U

24"

.156

.313

.468

30"

.382

36"

.791

24"

.068

.132

.197

.263

.329

.395

.462

30"

.116

.228

.345

.460

C

36"

.192

.380

.570

3.0#

42"

.280

.561

CARBON STEEL

48"

.380

.762

24"

.073

.146

.220

.293

.366

.440

U

30"

.155

.311

.463

36"

.330

.660

42"

.527

24"

.049

.094

.140

.187

.234

.280

.326

.372

.420

.465

30"

.099

.198

.297

.395

C

36"

.180

.357

.535

42"

.225

.455

.684

3.14#

48"

.342

.687

CARBON STEEL

24"

.057

.115

.173

.230

.288

.346

.404

.462

30"

.129

.259

.388

.517

U

36"

.315

.626

42"

.449

48"

.745

24"

.031

.064

.096

.128

.160

.192

.224

.256

.288

.320

30"

.060

.120

.180

.240

.300

.360

.420

.480

C

36"

.101

.205

.310

.402

.505

.605

42"

.158

.315

.473

.630

4.0#

48"

.218

.433

.648

CARBON STEEL

24"

.037

.073

.111

.147

.184

.222

.259

.296

.333

.370

30"

.068

.135

.205

.274

.340

.410

.477

.545

U

36"

.180

.358

.536

42"

.283

.565

48"

.487

24"

.038

.078

.116

.156

.196

.235

.275

.315

.355

.395

30"

.081

.163

.245

.327

.409

.491

C

36"

.124

.250

.379

.505

42"

.199

.399

.598

4.27#

48"

.242

.480

.720

CARBON STEEL

24"

.038

.079

.120

.160

.200

.240

.280

.320

.360

.400

30"

.078

.156

.235

.312

.390

.470

U

36"

.186

.373

.560

42"

.379

48"

.542

24"

.023

.047

.070

.093

.116

.140

.164

.186

.210

.234

30"

.033

.087

.130

.174

.217

.261

.304

.348

.391

.433

C

36"

.078

.154

.230

.305

.383

.458

.535

42"

.103

.206

.310

.414

.515

.617

48"

.155

.306

.459

.610

5.0#

54"

.242

.485

.730

CARBON STEEL

24"

.025

.050

.075

.100

.125

.150

.175

.200

.225

.250

30"

.061

.123

.184

.246

.307

.369

.430

.491

.552

U

36"

.133

.265

.395

.526

42"

.200

.400

.600

48"

.355

.708

54"

.605

24"

.015

.030

.045

.060

.075

.090

.105

.120

.135

.150

30"

.035

.069

.103

.137

.171

.206

.240

.274

.308

.342

36"

.054

.108

.161

.216

.269

.324

.377

.431

.484

.537

C

42"

.084

.166

.247

.329

.412

.492

.675

48"

.117

.236

.355

.474

.593

54"

.167

.336

.506

.670

6.25#

60"

.225

.452

.683

CARBON STEEL

72"

.456

.912

24"

.017

.035

.054

.072

.090

.110

.127

.145

.164

.181

30"

.045

.094

.135

.180

.226

.270

.316

.360

.405

.450

36"

.092

.184

.276

.368

.460

.552

U

42"

.150

.302

.451

.602

48"

.285

.576

54"

.457

60"

.606

30"

.030

.061

.090

.121

.152

.182

.212

.242

.273

.303

36"

.051

.101

.151

.201

.251

.301

.351

.401

.451

.501

42"

.065

.130

.195

.259

.323

.389

.452

.515

.580

C

48"

.095

.190

.282

.376

.470

.565

54"

.143

.283

.423

.564

7.0#

60"

.203

.405

.610

CARBON STEEL

72"

.355

.208

.708

30"

.039

.079

.118

.157

.196

.236

.274

.314

.353

.392

36"

.085

.170

.252

.336

.420

.504

.587

42"

.126

.255

.385

.512

.642

U

48"

.210

.420

.628

54"

.365

.731

60"

.555

72"

1.080

18"

.019

.039

.059

.079

.099

.119

.139

.159

C

24"

.046

.092

.138

.184

.230

.277

2.0#

30"

.092

.181

.269

.360

ALUMINUM

36"

.125

.255

.385

.465

18"

.017

.034

.051

.068

.085

.103

.121

.139

.157

U

24"

.047

.094

.141

.189

.236

.283

30"

.108

.216

.322

36"

.213

.430

CONCENTRATED LOAD: A load that is concentrated over a small area. Example, a pedestrian load, or light equipment load. Concentrated loads are shown in # per ft. of grating width measured perpendicular to span (i.e., in SWD Direction).

UNIFORM LOAD: A load that is equally distributed over all of the clear span. Measured in # per sq. ft. (i.e., inventories stacked on shelving).

DEFLECTION: The deviation in inches from the original plane when the grating is placed under a load.

CLEAR SPAN: The distance between supporting members measured from the inside bearing point of one supporting member to the inside bearing point of the next supporting member.