§870.TABLE F. Pier Load and Minimum Pier Capacity for 14 Foot Wide Section (Pounds)  


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    Roof Live Load (psf)

    Mating/Perimeter Wall Opening (feet)

    5

    10

    15

    20

    25

    30

    35

     

    20

    1000

    2000

    3000

    4100

    5100

    6100

    7100

     

    30

    1400

    2700

    4100

    5400

    6800

    8100*

    9500*

     

    40

    1700

    3400

    5100

    6800

    8400*

    10100*

    11800*

    Soil's Load- Bearing Capacity (psf)

    Footing Area (square inches)

    1000

    20

    144

    288

    432

    590

    734

    878

    1022

    30

    202

    389

    590

    778

    979

    1166

    1368

    40

    245

    490

    734

    979

    1210

    1454

    1699

    1500

    20

    144

    192

    288

    394

    490

    586

    682

    30

    144

    259

    394

    518

    653

    778

    912

    40

    163

    326

    490

    653

    806

    970

    1133

    2000

    20

    144

    144

    216

    295

    367

    439

    511

    30

    144

    194

    295

    389

    490

    583

    684

    40

    144

    245

    367

    490

    605

    727

    850

    3000

    20

    144

    144

    144

    197

    245

    293

    341

    30

    144

    144

    197

    260

    326

    389

    456

    40

    144

    163

    245

    326

    403

    485

    566

    4000

    20

    144

    144

    144

    148

    184

    220

    256

    30

    144

    144

    148

    194

    245

    292

    342

    40

    144

    144

    184

    245

    302

    364

    425

     

    *    Individual supports shall NOT support loads greater than 8000 pounds for a single stack of 8"x8"x16" stack of blocks, 14000 pounds for a double stack.